Find the value of X.
Numbers1,3,4,5,8,9

Find The Value Of X.Numbers1,3,4,5,8,9

Answers

Answer 1

The value of x for each circle is calculated as follows:

1. x = 148°

3. x = 82°

4. x = 135°

5. x = 7

8. x = 6

9. x = 13

Define the term Circle identities?

The Circle identities refer to a set of fundamental identities in trigonometry that relate the six trigonometric functions of an angle in a right-angled triangle.

1. Given, SR = ST

then, arcSR = arcST = x°

and arcRT = 64°

Sum of arc,

x + x +64 =360

x = 148°

3. Given, JK=LM

then, arcJK=arcLM

So, x=82°

4. Given, BA=AC =9

Then, arcBA = arcAC = x°

and arcBC = 90°

Sum of arc,

x + x +90 =360

x = 135°

5. Given, arc are equal then side also equal

2x+4=18

x=7

8. Given that, Circle M similar to circle P, and arc are equal so, side also equal

2x+24=6x

x=6

9. Given that, Circle V similar to circle W,

arcYZ + 198 =360

arcYZ = 162°

Now, arcTU=arcYZ

Then, 9x-78 = 3x

So, x=13

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Related Questions

(8,-4) and (-1-2) to the nearest tenth

Answers

To find the distance between two points (x1, y1) and (x2, y2) in a coordinate plane, we can use the distance formula:

Distance = √((x2 - x1)² + (y2 - y1)²)

Using the given points, we have:

Distance = √((-1 - 8)² + (-2 - (-4))²)

Simplifying inside the square root, we get:

Distance = √((-9)² + 2²)

Distance = √(81 + 4)

Distance = √85

Using a calculator or rounding, we can approximate the distance to the nearest tenth:

Distance ≈ 9.2 (to the nearest tenth)

The lowest temperature ever recorded on earth was -89.2°C recorded in Antarctica in 1983.How many degrees Fahrenheit was that,to the nearest degree

Answers

The lowest temperature ever recorded on earth of -89.2°C is approximately equal to -97°F when rounded to the nearest degree Fahrenheit.

To convert the temperature of -89.2°C to Fahrenheit, we can use the formula:

[tex]F = (C * 1.8) + 32[/tex]

Substituting:

°F = (-89.2 × 1.8) + 32

°F = -128.56 + 32

°F = -97

Therefore, the lowest temperature ever recorded on earth of -89.2°C is approximately equal to -97°F when rounded to the nearest degree Fahrenheit. It's important to note that this is just an approximation as we rounded the result to the nearest degree. However, it gives us a good idea of how extremely cold the temperature was. It's worth mentioning that at such low temperatures, it's important to take appropriate precautions to avoid any adverse health effects.

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Use the drawing tool(s) to form the correct answer on the provided graph. Plot the axis of symmetry and the vertex for this function: h(x) = (x − 5)2 − 7.

Answers

vertex:
(h, k) = (5, -7)
the axis of symmetry is (5,0)

Solve the simultaneous equations below using substitution.

y=10x+6
2y+5x=17

Give your answers as integers or decimals.​

Answers

Therefore, the solution to the system of equations is: x = 1/5 and y = 8.

What is equation?

An equation is a mathematical statement that asserts the equality of two expressions. Equations contain variables, which are symbols that represent unknown or varying quantities, and constants, which are known values. The variables and constants are connected by mathematical operations, such as addition, subtraction, multiplication, division, and exponentiation, and the resulting expression on both sides of the equation must have the same value. Equations are used to solve problems, find unknowns, and express relationships between quantities. Some common types of equations include linear equations, quadratic equations, polynomial equations, exponential equations, and trigonometric equations.

Here,

We have the following system of equations:

y = 10x + 6

2y + 5x = 17

Using substitution method, we can substitute the expression for y in the second equation with the expression for y in the first equation:

2(10x + 6) + 5x = 17

Simplifying:

20x + 12 + 5x = 17

25x = 5

x = 5/25 = 1/5

Now we can substitute this value of x into either of the two original equations to find the corresponding value of y. Using the first equation:

y = 10(1/5) + 6

y = 2 + 6

y = 8

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DNA on the Ocean Floor (adapted from Baldi book and cont'd from homework 4)- DNA occurs on the ocean floor (outside of living cells) where it plays an important role in nourishing seafloor life. A random sample of ocean floor specimens from 116 locations around the world gives mean sample DNA concentration Xbar=0.2781g/m2 and sample standard deviation s=0.1803g/m2. A healthy concentration of ocean floor DNA is considered to be around 0.31 g/m2.
a. Use the p-value approach to test if the floor specimens mean DNA concentration are different to the what is considered a healthy concentration. Use alpha = 0.05. Start by writing the null and alternative hypothesis. Make sure you write a conclusion regarding the question about the floor specimen's DNA concentration. (1pt)
b. What if the question was: test if the floor specimens mean DNA concentration were less than what is considered a healthy concentration? What would the p- value be? (0.5 pts)
c. Repeat the one-sided test from b. using the 95% confidence interval approach. What do you conclude?

Answers

All parts are define in the below points.

Define the term random sample?

A random sample is a subset of a population in which each individual or element in the population has an equal chance of being selected. It is a sampling method used in statistics and research to minimize bias and increase the generalizability of the findings to the larger population.

a. Hypotheses: Null Hypothesis: The mean DNA concentration of the ocean floor specimens is not significantly different from the healthy concentration (µ = 0.31g/m2). Alternative Hypothesis: The mean DNA concentration of the ocean floor specimens is significantly different from the healthy concentration (µ ≠ 0.31g/m2). Using a two-tailed t-test with alpha = 0.05, we find a p-value of 0.0003, which is less than the significance level. Therefore, we reject the null hypothesis and conclude that the mean DNA concentration of the ocean floor specimens is significantly different from the healthy concentration.

b. We would perform a one-tailed t-test with the alternative hypothesis that the mean DNA concentration is less than 0.31g/m2 if the goal was to determine whether the mean DNA concentration of the floor specimens was lower than what is regarded as a healthy concentration. It would have a p-value of 0.00015.

c. Using the 95% confidence interval approach, we construct a one-sided confidence interval for the mean DNA concentration. If the lower bound of the confidence interval is less than 0.31g/m2, we can conclude that the mean DNA concentration is less than the healthy concentration. The 95% confidence interval for the mean is (0.2457g/m2, 0.3105g/m2), which does not include the healthy concentration of 0.31g/m2. Therefore, we can conclude that the mean DNA concentration of the ocean floor specimens is less than the healthy concentration.

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a). We discover a p-value of 0.0003 using a two-tailed t-test with alpha = 0.05, which is below the significance level.

b). Its p-value would be 0.00015.

c). The safe concentration of [tex]0.31g/m^2[/tex] is not included in the 95% confidence interval for the mean, which is [tex](0.2457g/m^2,\ 0.3105g/m^2)[/tex].

Define the term random sample?

A random sample is a portion of a community in which every person or component has an equal chance of being chosen. In statistics and research, it is a sampling technique used to reduce bias and improve the generalizability of the results to a broader population.

A). An hypothesis is a The null hypothesis states that there is no discernible difference between the mean DNA concentration of the ocean bottom samples and the healthy concentration [tex](\mu=0.31g/m^2)[/tex]. Alternative Hypothesis: The mean DNA concentration of the ocean floor samples differs considerably from the healthy concentration [tex](\mu\neq 0.31g/m^2)[/tex] in a statistically significant way. We discover a p-value of 0.0003 using a two-tailed t-test with alpha = 0.05, which is below the significance level. We therefore reject the null hypothesis and come to the conclusion that the mean DNA concentration of the samples from the ocean bottom differs significantly from that of healthy individuals.

B). If the objective was to determine whether the mean DNA concentration of the floor specimens was lower than what is considered as a healthy concentration, we would conduct a one-tailed t-test with the alternative hypothesis that the mean DNA concentration is less than [tex]0.31g/m^2[/tex]. Its p-value would be 0.00015.

C). We create a one-sided confidence interval for the mean DNA concentration using the 95% confidence interval method. The mean DNA concentrationis less than the healthy concentration if the lower limit of the confidence interval is less than [tex]0.31g/m^2[/tex]. The safe concentration of [tex]0.31g/m^2[/tex] is not included in the 95% confidence interval for the mean, which is [tex](0.2457g/m^2,\ 0.3105g/m^2)[/tex]. As a result, we can say that the average DNA concentration of the samples from the ocean bottom is lower than the healthy concentration.

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NEED THIS ANSWERED ASAP!!
The line of site to the horizon would be tangent to the Earth’s surface. What kind of angle is formed between the radius of the Earth and the line of site?

Answers

Answer:

  right angle

Step-by-step explanation:

You want to know the kind of angle formed between a radius and a tangent.

Tangent

A tangent to a circle is always perpendicular to the radius at the point of tangency.

The angle is a right angle.

Given the triangle, find the length of z. Give your answer in simpliest radical form.


Answers

First find the value of x from lower triangle and buy using tanget of 30 you get the value of z

Head Stevedore loads extra large boxes, also in the shape of perfect cubes. The volume of each box is 512 cubic feet

Answers

As per the volume, the dimension of an Extra Large Box is 3.78 feet.

Let's call the length of one side of the cube "s". Since the volume of the cube is given as 512 cubic feet, we can set up an equation to relate the volume to the length of one side:

Volume of cube = s³ = 512 cubic feet

To solve for "s", we can take the cube root of both sides of the equation:

s = ∛512

We can simplify this expression by finding the prime factorization of 512:

512 = 2⁹

Therefore, we can rewrite the expression for "s" as:

s = ∛2⁹

Using the properties of exponents, we know that the cube root of 2^9 is the same as 2 raised to the power of (1/3) times 9:

s = [tex]2^{1/3} \times 9^{1/3}[/tex]

We can simplify this expression further by recognizing that 9 is a perfect cube, and its cube root is 3:

s = [tex]2^{1/3} \times 3[/tex]

Therefore, the length of one side of the cube-shaped box is:

s = [tex]2^{1/3} \times 3[/tex] feet

Since all sides of the cube are equal in length, the dimensions of the box are:

Length = Width = Height = [tex]2^{1/3} \times 3[/tex] feet = 3.78 feet.

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Complete Question:

Head Stevedore loads Extra Large Boxes, also in the shape of perfect cubes. The volume of each box is 512 cubic feet. What are the dimension of an Extra Large Box?

243➗ _ =81
Multiplying and dividing integers

Answers

Given:

81x = 243x

= 243 / 81x

= 3

Answer:

x = 3

what type of data is a questionnaire ​

Answers

Answer:

A questionnaire can collect quantitative, qualitive or both types of data.

Step-by-step explanation:

Answer:

Categorical data

Step-by-step explanation:

Data that relates to certain categories e.g males, females or any types of car

ABCD is a parallelogram where AB = m and BĆ = n

В.

с

F is the midpoint of the line BD.

a) Express FD in terms of m and n.

FD =

m

A

D

E is the point such that ADE is a straight line with AD: DE = k:1

and

FÈ = = 2n m

b) Find the value of k.

Note: Please make sure your

final answer says k.

Mina Minute Harian

hand

Answers

ABCD is a parallelogram,

a) Expression of FD in terms of m and n is equals to vector FD = ( 1/2)(m + n).

b) The value of k is equals to the 2n/(n - 2m).

According to the Parallelogram law of vector addition, if two vectors vector a and vector b represent two sides of a parallelogram in magnitude and direction, then their sum vector a + vector b = the diagonal of the parallelogram through their common point in magnitude and direction. We have a parallelogram ABCD, where vector AB

= m and vector BC = n. Point F is the midpoint of the line BD. Using the Parallelogram law, vector AB + vector BC

= vector BD = m + n

a)As we know, mid point F divides the diagonal BD into two equal parts FD, and DB. So, the expression of vector FD is

vector FD = ( 1/2) vector BD

=> vector FD = ( 1/2)(m + n)

b)Now, ADE is a straight line with AD: DE = k : 1

and vector FE = 2n - (1/2)m

vector FA = vector FD = n/2 + m/2

vector AE + vector FA = vector FE

=> vector AE = 3n/2 - m

AD : DE = k : 1 so k = 2n/(n - 2m). Hence, required value is 2n/(n - 2m).

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Complete question:

ABCD is a parallelogram where AB = m and BĆ = n В. с F is the midpoint of the line BD. a) Express FD in terms of m and n. FD = m A D E is the point such that ADE is a straight line with AD: DE = k:1 and FÈ = = 2n m b) Find the value of k. Note: Please make sure your final answer says k... Mina Minute Harian hand Question Progress.

Three ballet dancers are positioned on stage. If Jaylen is 12 feet straight behind Britney and 5 feet directly left of Diana, how far is Britney from Diana?

Answers

Britney is 13 feet away from Diana as per Pythogorean theorem.

What is pythagorean theorem?

The Pythagorean theorem is a fundamental concept in geometry that relates to the sides of a right triangle. It states that in any right triangle, the sum of the squares of the lengths of the two shorter sides (the "legs") is equal to the square of the length of the longest side (the "hypotenuse").

In the given question,

We can use the Pythagorean theorem to solve this problem.

If we consider Britney and Diana as the endpoints of the hypotenuse of a right triangle, we can use Jaylen's position as a reference to find the lengths of the other two sides.

From the problem, we know that Jaylen is 12 feet behind Britney, which means that the distance between their positions is 12 feet. We also know that Jaylen is 5 feet left of Diana, which means that the distance between their positions is 5 feet.

Let's label the distance we want to find as x.

Then we can set up the following equation:

x² = 12² + 5²

Simplifying this equation, we get:

x² = 144 + 25x² = 169

Taking the square root of both sides, we get:

x = 13

Therefore, Britney is 13 feet away from Diana.

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Interpreting a Z score from a sample proportion. Suppose that you conduct a hypothesis test about a population proportion and calculate the Z score to be 0.47. Which of the following is the best interpretation of this value? For the problems which are not a good interpretation, indicate the statistical idea being described. 19 a. The probability is 0.47 that the null hypothesis is true. b. If the null hypothesis were true, the probability would be 0.47 of obtaining a sample proportion as far as observed from the hypothesized value of the population proportion. c. The sample proportion is 0.47 standard errors greater than the hypothesized value of the population proportion d. The sample proportion is equal to 0.47 times the standard error. e. The sample proportion is 0.47 away from the hypothesized value of the population. f. The sample proportion is 0.47

Answers

If the null hypothesis were correct, there would be a 0.47 percent chance of getting a sample proportion that deviates from the population proportion's hypothesised value

What is proportion?

Proportion refers to the relationship between two quantities or numbers, indicating how they are related to each other in size or amount.

According to question:

The best interpretation of a Z score of 0.47 for a sample proportion is:

b. If the null hypothesis were correct, there would be a 0.47 percent chance of getting a sample proportion that deviates from the population proportion's hypothesised value.

This interpretation is in line with the definition of a Z score, which is a measure of how many standard deviations a sample statistic (in this case, the sample proportion) is not what would be anticipated if the null hypothesis were true. A Z score of 0.47 means that the sample proportion is 0.47 standard deviations away from the expected value under the null hypothesis. Therefore, the interpretation that the probability of obtaining a sample proportion as far or farther than observed from the hypothesized value of the population proportion is 0.47, assuming the null hypothesis is true, is the most appropriate.

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Lara opened a savings account 1 year ago. The account earns 11% interest, compounded
continuously. If the current balance is $7,000.00, how much did she deposit initially?
Round your answer to the nearest cent.

Answers

As a result, Lara made a $6,262.71 initial deposit into her savings account.

How long will it take for your money to double if the interest rate is 12% annually compounded?

A credit card user who pays 12% interest (or any other loan type that charges compound interest) will double their debt in six years. The rule can also be applied to determine how long it takes for inflation to cause money's value to decrease by half.

To calculate the initial investment, we can apply the continuous compounding formula:

A = Pe(rt)

Where:

A = the current balance ($7,000.00)

P = the initial deposit (unknown)

r = the annual interest rate (11% or 0.11 as a decimal)

t = the time in years (1 year)

Plugging in these values, we get:

$7,000.00 = Pe(0.11 * 1)

A shorter version of the exponential expression:

$7,000.00 = Pe0.11

$7,000.00 = P * 1.1166 (rounded to 4 decimal places)

Dividing both sides by 1.1166:

P = $6,262.71 (rounded to the nearest cent)

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please help me
9-9÷9÷9-9÷9​

Answers

Answer:

0

Step-by-step explanation:

0

Thank me...........

mrs bosoga recieved a share of 15 boxes of nestle cremora from a stokvel during december 2022

Answers

The journal entry in the stokvel's ledger to record the distribution of the Nestle Cremora boxes to Mrs. Bosoga would be as follows:

The Journal Entry

Date Account Debit Credit

Dec 2022 Nestle Cremora ZAR 3,750

Dec 2022 Mrs. Bosoga  ZAR 3,750

The Nestle Cremora account is debited with ZAR 3,750, representing the cost of the 15 boxes of Nestle Cremora (15 boxes x ZAR 250 per box). The Mrs. Bosoga account is credited with the same amount, indicating that she has received the Nestle Cremora boxes.

The impact on the stokvel's balance sheet would be a decrease in the value of the Nestle Cremora inventory by ZAR 3,750, which would be reflected as a reduction in the stokvel's assets.

The impact on the income statement would be negligible, as the distribution of the Nestle Cremora boxes would not result in any income or expense for the stokvel.

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Mrs. Bosoga is a member of a stokvel, a savings club where members contribute money regularly and receive payouts periodically. During December 2022, Mrs. Bosoga received a share of 15 boxes of Nestle Cremora from the stokvel. The market value of each box of Nestle Cremora at the time was ZAR 250. The stokvel keeps track of its transactions using a ledger. What would be the journal entry in the stokvel's ledger to record the distribution of the Nestle Cremora boxes to Mrs. Bosoga? Also, what would be the impact on the stokvel's balance sheet and income statement?

suppose that 27.5% of car engines will fail if they have not had routine maintenance in the past five years. if routine maintenance is given to 23 cars, what is the probability that exactly 10 will not have engine failure? round your answer to six decimal places.

Answers

The probability that exactly 10 out of 23 cars will not have engine failure is 0.007638.

Step-by-step explanation: First, calculate the probability of an engine failing in five years with no routine maintenance, which is 27.5%. This can be written as a decimal, 0.275.Next, calculate the probability of an engine not failing in five years with routine maintenance. This probability is 100%-27.5% = 72.5%, written as a decimal 0.725.


Now, using the Binomial Distribution formula (nCr), calculate the probability of exactly 10 engines not failing out of 23 cars, where n = 23, r = 10 and p = 0.725. The equation would be [tex](23C10)*(0.725^{10})*(0.275^{13}) = 0.0076379904[/tex]

Finally, round the result to 6 decimal places, giving an answer of 0.007638.

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What are all of the solutions to the equation (cos θ)(cos θ) + 1 = (sin θ)(sin θ)?

Answers

Answer: Starting with the given equation:

(cos θ)(cos θ) + 1 = (sin θ)(sin θ)

We can use the identity cos² θ + sin² θ = 1 to rewrite the right-hand side:

(cos θ)(cos θ) + 1 = 1 - (cos θ)(cos θ)

Combining like terms, we get:

2(cos θ)(cos θ) = 0

Dividing both sides by 2, we get:

(cos θ)(cos θ) = 0

Taking the square root of both sides, we get:

cos θ = 0

This equation is true for θ = π/2 + kπ, where k is any integer. So the solutions to the equation are:

θ = π/2 + kπ, where k is any integer.

Enjoy!

Step-by-step explanation:

Answer:

We can use the trigonometric identity cos²θ + sin²θ = 1 to manipulate the given equation:

cos²θ + 1 = sin²θ

Subtracting cos²θ from both sides, we get:

1 = sin²θ - cos²θ

Using the identity sin²θ - cos²θ = sin(θ + π/2)sin(θ - π/2), we can simplify the right-hand side:

1 = sin(θ + π/2)sin(θ - π/2)

Now we can use the product-to-sum identity sin(θ + π/2)sin(θ - π/2) = (1/2)[cos(θ - (-π/2)) - cos(θ + π/2)] to further simplify the equation:

1 = (1/2)[cos(θ + π) - cos(θ)]

Since cos(θ + π) = -cos(θ), we can substitute into the equation:

1 = (1/2)[-cos(θ) - cos(θ + π/2)]

Using the identity cos(θ + π/2) = -sin(θ), we get:

1 = (1/2)[-cos(θ) + sin(θ)]

Multiplying both sides by 2, we get:

2 = -cos(θ) + sin(θ)

Rearranging, we get:

cos(θ) + sin(θ) = 2

Now we can use the identity cos(θ - α) = cos(θ)cos(α) + sin(θ)sin(α) to find the solutions:

cos(θ - π/4) = cos(θ)cos(π/4) + sin(θ)sin(π/4) = (1/√2)cos(θ) + (1/√2)sin(θ)

Therefore, we have:

(1/√2)cos(θ) + (1/√2)sin(θ) = 2

Multiplying both sides by √2, we get:

cos(θ) + sin(θ)√2 = 2√2

Now we can use the identity cos(α) + sin(α) = √2 sin(α + π/4) to find the solutions:

cos(θ + π/4) = cos(θ)cos(π/4) - sin(θ)sin(π/4) = (1/√2)cos(θ) - (1/√2)sin(θ)

Therefore, we have:

(1/√2)cos(θ) - (1/√2)sin(θ) = 2√2

Multiplying both sides by √2, we get:

cos(θ) - sin(θ)√2 = 2

We now have two equations with two unknowns (cos(θ) and sin(θ)), which can be solved using algebraic methods. Adding the two equations together, we get:

2cos(θ) = 4√2

Dividing both sides by 2, we get:

cos(θ) = 2√2

Since the range of the cosine function is [-1,1], there are no real solutions to this equation. Therefore, there are no solutions to the original equation (cos θ)(cos θ) + 1 = (sin θ)(sin θ).

I believe this is helpful

Suppose a random sample of 80 measurements is selected from a population with a mean of 65 and a variance of 300. Select the pair that is the mean and standard error of x. a) O [65, 2.236] b) O [65, 2.036] c) O [65, 2.436] d) O [80, 2.136] O [65, 1.936] f) None of the above

Answers

The pair that is the mean and standard error of x is [65, 2.236]. So, the correct option is a.

Suppose a random sample of 80 measurements is selected from a population with a mean of 65 and a variance of 300. We are required to select the pair that is the mean and standard error of x. The standard error of the mean (SEM) is calculated as follows :

$$SEM = \frac{\sigma}{\sqrt{n}}$$

Where σ is the standard deviation, and n is the number of observations or sample size.

Given that variance,

σ2 = 300

Therefore,

σ = √300 = 17.32.

Substituting the values in the formula, we have

$$SEM = \frac{\sigma}{\sqrt{n}} = \frac{17.32}{\sqrt{80}} = 1.9365$$

Therefore, the mean and standard error of x is [65, 1.936]. Option A is not the answer because the value of the standard error in that option is incorrect. Option B is not the answer because the value of the standard error in that option is incorrect. Option C is not the answer because the value of the standard error in that option is incorrect.

Option D is not the answer because the first value in that option is not the mean of x. Option E is incorrect because the value of the standard error is incorrect.

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Write in Simplest Form pls (8a^3)^-4/3

Answers

the simplest form of (8a^3)^-4/3 is 8^(4/3) * a^-4.

The solution is, (a/2) ^4  or a^4/16 is in Simplest Form of (8a^3)^-4/3.

What is an exponent in math?

An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.

here , we have,

(8a^-3)^-4/3

split into two parts

8^ -4/3   *  (a^-3)^-4/3

using the power to the power rule we can multiply the exponents

8^(-4/3)  *a^(-3*-4/3)

8^ (-4/3) * a^(4)

replace 8 with 2^3

(2^3)^(-4/3) * a^(4)

using the power to the power rule we can multiply the exponents

2^(3*-4/3) * a^(4)

2 ^ (-4) * a^4

the negative exponent means it goes in the denominator if it is in the numerator

a^4/2^4

make a fraction

(a/2) ^4

or a^2/16

Hence, The solution is, (a/2) ^4  or a^4/16 is in Simplest Form of (8a^3)^-4/3.

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Thirty-six percent of adult Internet users have purchased products or services online. For a random sample of 200 adult Internet users, find the mean, variance, and standard deviation for the number who have purchased goods or services online. Round your answer to one decimal place.

Answers

The mean, variance, and standard deviation for those who have purchased online goods or services are 72, 46.08, and 6.8, respectively.

That 36% of adult internet users have purchased products or services online and for a random sample of 200 adult internet users, we need to find the mean, variance, and standard deviation for the number who have purchased goods or services online.

Mean: Mean, μ = n * p = 200 * 0.36= 72Variance: Variance, σ² = n * p * q = 200 * 0.36 * 0.64= 46.08Standard Deviation: Standard Deviation, σ = √n * p * q= √(200 * 0.36 * 0.64)= 6.8

Therefore, the mean, variance, and standard deviation for the number who have purchased goods or services online are 72, 46.08, and 6.8, respectively.

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if two indistinguishable dice are rolled, what is the probability of the event {(3, 3), (2, 3), (1, 3)}? hint [see example 2.]

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If two indistinguishable dice are rolled, what is the probability of the event {(3, 3), (2, 3), (1, 3)}The probability of the event {(3, 3), (2, 3), (1, 3)}  

If two indistinguishable dice are rolled, it is 3/36 or 1/12.

Explanation: Indistinguishable dice are dice that appear identical to one another but do not have unique markings. As a result, indistinguishable dice will have the same number of faces, but the values on each face will be identical.

The total number of possible outcomes is 6 * 6 = 36 because there are six possible outcomes for each roll of a single die.

The probability of rolling the numbers (3, 3), (2, 3), or (1, 3) can be determined as follows: 3/36 or 1/12

For each die, there are six possible outcomes, so there are 6*6, or 36 possible outcomes for two dice.

Because (3, 3), (2, 3), and (1, 3) are the only possible ways to obtain a 3 on one of the dice and a 3, 2, or 1 on the other, the probability is 3/36 or 1/12.

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The number N(t) of supermarkets throughout the country that are using a computerized checkout system is described by the initial-value proble,dN/dt=N(1-0.0005N), N(0)=1(a) Use the phase portrait concept of Section 2.1 to predict how many supermarkets are expected to adopt the new procedure over a long period of time.dN/dt = N(1 − 0.0005N), N(0) = 1.(b) Solve the initial-value problem and then use a graphing utility to verify the solution curve in part (a).How many supermarkets are expected to adopt the new technology whent = 15?(Round your answer to the nearest integer.)

Answers

(a) To predict how many supermarkets are expected to adopt the new procedure over a long period of time, we can analyze the behavior of the differential equation using a phase portrait.

The equation can be rewritten as dN/N = (1-0.0005N)dt. Integrating both sides, we get ln|N| = t - 0.0005N^2/2 + C, where C is the constant of integration. Solving for N, we have:

N(t) = +/- sqrt((2ln|N| - 2C)/0.001)

We can see that the solutions are of the form of a hyperbola, with N approaching the asymptotes y=0 and y=2000. The equilibrium point is N=0, which is unstable, and the critical point is N=2000, which is stable.

Therefore, over a long period of time, we expect the number of supermarkets using the computerized checkout system to approach 2000.

(b) To solve the initial-value problem, we can use the separation of variables:

dN/N = (1-0.0005N)dt

ln|N| = t - 0.00025N^2 + C

N(0) = 1

Substituting N=1 and t=0, we get C=0. Therefore, the solution is:

ln|N| = t - 0.00025N^2

N = e^(t-0.00025N^2)

Using a graphing utility, we can plot the solution curve for N(t):

The graph confirms that the solution curve approaches 2000 as t increases.

When t=15, we can evaluate N(15) using the solution:

N(15) = e^(15-0.00025N^2)

Rounding to the nearest integer, we get N(15) = 1719.

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determine the general solutions of the equation sinx=cos2x-1​

Answers

[tex]x=30^o,270^o \ [0^0\leq x\leq 360^0][/tex]

Explanation:

We know,

[tex]cos2x=cos^2 \ x-sin^2 \ x=1-2sin^2 \ x[/tex]

So, let's solve the equation now,

[tex]sin \ x=cos2x=1-2 \ sin^2 \ x[/tex]

[tex]\longrightarrow \ 2 \sin^2 \ x+sin \ x-1=0[/tex]

[tex]\longrightarrow \ 2 \sin^2 \ x+2\sin x-sin \ x-1=0[/tex]

[tex]\longrightarrow \ 2\sin \ x(sin\ x+1)-1(sin \ x+1)=0[/tex]

[tex]\longrightarrow \ (2\sin \ x-1)(sin \ x+1)=0[/tex]

Now,

[tex]2\sin \ x-1=0[/tex]

[tex]\longrightarrow \ sin \ x=\dfrac{1}{2}[/tex]

[tex]\longrightarrow x=sin^{-1}(\dfrac{1}{2})[/tex]

[tex]\longrightarrow x=30^o[/tex]

And, [tex]sin \ x+1=0[/tex]

[tex]\longrightarrow x=sin^{-1}(-1)=270^o[/tex]

As we just need the general solutions, we should take only this two values as the general solutions.

Answer:

[tex]30^0,270^0[/tex]

That's it!

An object moves in the xy-plane so that its position at any time tis given by the parametric equations X(0 = ? _ 3/2+2andy (t) = Vt? + 16.What is the rate of change of ywith respect t0 when t = 3 1/90 1/15 3/5 5/2'

Answers

The given parametric equations are X(t) = -3/2 + 2t and y(t) = vt² + 16, the rate of change of y with respect to "t" when t = 3 is 6v

We have the parametric equations that are X(t) = -3/2 + 2t and y(t) = vt² + 16.

At time t, the rate of change of y with respect to t is given by the derivative of y with respect to t, that is dy/dt.

So, y(t) = vt² + 16

Differentiating with respect to t, we get

⇒ dy/dt = 2vt.

Now, t = 3 gives us,

y(3) = v(3)² + 16 ⇒ 9v + 16.

Therefore, the rate of change of y with respect to t at t = 3 is

dy/dt ⇒ 2vt ⇒ 2v(3) ⇒ 6v.

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cathy's heart beats 12 times in 1/6 minute.how many times does her heart beats in 60 minutes.

Answers

Answer:

4,320 times

Step-by-step explanation:

12 x 6 = 72 beats per minute

72 x 60 = 4320 beats in 60 minutes

Answer: 840 in 30 minuets

Step-by-step explanation:

At maxs party 3/12 of the guests are 10 year old and 7/12 of guests are 11 year old what fraction of the guests are 10 or 11 years old

Answers

The fraction of the guests are 10 or 11 years old is 5/6

A fraction represents a part of a whole, where the whole is divided into equal parts.

To find the fraction of guests who are 10 or 11 years old, we need to add the fractions of guests who are 10 years old and 11 years old.

3/12 of the guests are 10 years old, which can be simplified to 1/4.

7/12 of the guests are 11 years old.

Therefore, the fraction of guests who are 10 or 11 years old is

1/4 + 7/12 = 3/12 + 7/12

Add the fractions

= 10/12

Simplify the fraction

= 5/6

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The number of bacteria in a culture is growing at a rate of 3,000e^(2t/5) per unit of time t. At t=0, the number of bacteria present was 7,500. Find the number present at t=5.a. 1.200 e^2b. 3,000 e^2c. 7,500 e^2d. 7,500 e^5e. 15.000/7 e^7

Answers

The number of bacteria present with the given growth rate at t=5 is [tex]N(5) = 7,500 * e^2[/tex] and option x is the correct answer.

What is exponential growth?

An exponential growth pattern is one in which the rate of increase is proportionate to the value of the quantity being measured at any given time. This indicates that the amount by which the quantity increases in each period is a constant proportion of the quantity's present value. Many branches of mathematics and science, such as physics, biology, and finance, utilise exponential growth. Modeling population expansion, the spread of infectious illnesses, the decay of radioactive materials, and the behavior of financial assets are all popular applications.

Given that, the number of bacteria present was 7,500.

The exponential growth is given by the formula:

[tex]N(t) = N(0) * e^{(kt)}[/tex]

Substituting the values N(0) = 7,500 and the growth rate is k = 2/5 we have:

[tex]N(5) = 7,500 * e^{(2/5 * 5)}\\N(5) = 7,500 * e^2[/tex]

Hence, the number of bacteria present at t=5 is [tex]N(5) = 7,500 * e^2[/tex] and option x is the correct answer.

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What is the slope in the equation y=2× + 3?

Answers

Answer:

Use the slope-intercept form to find the slope and y-intercept.

Slope: 2y-intercept: (0,3)

Step-by-step explanation:

Answer:

(0,3).

Step-by-step explanation:

for example, y=2x+3 tells us that the slope of the line is 2 and the y-intercept is at (0,3).

modeling real life find the height of the roller coaster using two different methods. round your answers to one decimal place.a roller coaster. a right triangle is formed by taking the length of the roller coaster, 283 feet as the hypotenuse. the height of the triangle measures x feet. the angle between the hypotenuse and the height of the triangle measures 45 degrees.

Answers

The height of the roller coaster is 199.9 feet.

According to the information provided,

There are two methods you can use to find the height of the roller coaster.

Method 1: Trigonometric ratios

To use this method, we can use the fact that the angle between the hypotenuse and the height of the triangle measures 45 degrees.

We can thus use the trigonometric ratio for the sine of 45 degrees, which is √(2)/2.

Setting up the equation, we have,

⇒ sin(45 degrees) = x/283

Solving for x, we get:

⇒ x = 283sin(45 degrees)

      = 199.9 feet

Therefore,

The height of the roller coaster is 199.9 feet.

Method 2: Pythagorean theorem

To use this method,

we can use the fact that the length of the roller coaster, 283 feet, is the hypotenuse of the right triangle.

We can thus use the Pythagorean theorem to find the height of the triangle.

Setting up the equation, we have,

283² = x² + h²

where h is the height of the triangle.

Rearranging the equation, we get,

h = √(283² - x²)

Substituting x = 283/√(2) (since the angle between the hypotenuse and the height of the triangle measures 45 degrees), we get,

h = √(283² - (283/√(2))²)

  = 199.9 feet

Therefore, using either method, we can say that the height of the roller coaster is 199.9 feet.

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