Suppose that 40% of Americans drink coffee, 30% drink tea, and 20% drink both coffee and tea. If an American is selected at random, find a. the probability they drink coffee or drink tea. b. the conditional probability they drink coffee given that they drink tea.

The number of dimes and quarters that Dan has will be 44 and 23, respectively.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

Dan has a container loaded with quarters and dimes. He has 21 additional dimes than he has quarters. Generally, Dan has 67 coins.

Let 'x' be the number of dimes and 'y' be the number of quarters. Then the equations are given as,

x = y + 21               ...1

x + y = 67             ...2

From equations 1 and 2, then we have

y + 21 + y = 67

2y = 46

y = 23

Then the value of the variable 'x' is calculated as,

x = 23 + 21

x = 44

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ1

When one of the parent cell keeps dividing while the other matures, this is known as arithmetic growth. The early stages of geometric growth are characterized by slow expansion, whereas the latter stages are characterized by rapid expansion.

When one of the parent cell keeps dividing while the other matures, this is known as arithmetic growth. An illustration of arithmetic growth is the ongoing elongation of roots. The early stages of geometric growth are characterized by slow expansion, whereas the latter stages are characterized by rapid expansion.

The amounts added grow by a fixed rate of growth, expressed in percentages. Due to the fact that these remain constant while the amounts added rise, growth is then typically measured in doubling times.

Due to the fact that all populations of organisms have the potential to experience exponential growth, the concept of exponential growth is particularly intriguing in the field of population biology.

To learn more about arithmetic growth and geometric growth link is here

brainly.com/question/3927222

#SPJ4

The solution to the given inequality is x ≤ -18 which is the correct answer that would be an option (D).

The inequality is given in the question as:

3 -x/2 ≥ 12

To solve this inequality, we need to isolate the variable x. To do this, we can start by subtracting 12 from both sides of the inequality:

3 - x/2 ≥ 12

3 - x/2 - 12 ≤ 0

Next, we can simplify the left side of the inequality by combining like terms:

-x/2 - 9 ≤ 0

Finally, we can solve for x by adding 9 to both sides and multiplying both sides by -2:

x ≤ -18

Thus, the solution to the inequality is x ≤ -18.

Learn more about inequalities here:

brainly.com/question/20383699

#SPJ1

The critical value that corresponds to a confidence interval of 95.9% is 1.99.

The distribution of the sample mean will be roughly normally distributed, according to the Central Limit Theorem, if we have an unknown population with a mean and standard deviation and adequately small random samples (n < 30) are chosen from the population with replacement.

Then, the mean of the sample means is given by,

μ(x) = μ

And the standard deviation of the sample means is given by,

σ = σ / [tex]\sqrt{n}[/tex]

In this case the sample selected is of size, n = 7.

As the sample size n = 7 < 30, the sampling distribution of sample mean will be approximately normal.

So, a z-interval will be used to estimate the population mean.

The confidence level is, 95.9%.

The value of α is:

∝ = 1 - confidence level

∝ = 1 - 0.959

∝ = 0.041

The critical value is:

[tex]z_{\frac{∝ }{2} }[/tex] =  [tex]z_{\frac{0.041}{2} }[/tex]

[tex]z_{\frac{∝ }{2} }[/tex] = [tex]z_{0.0205}[/tex]

[tex]z_{\frac{∝ }{2} }[/tex] = -1.99

[tex]z_{1-∝/2}[/tex] = 1.99

Use a z-table.

Therefore,

The critical value that corresponds to a confidence interval of 95.9% is 1.99.

To learn more about Critical value visit :
brainly.com/question/14508634

#SPJ4

Kevin's adjusted gross income is $36, 815. 52

Adjusted gross income is simply described as gross income minus certain adjustments from the income.

These adjustments includes;

It is calculated as;

Adjusted gross income = sum total of income - expenses

Now, let's substitute the values into the formula, we have;

Adjusted gross income = $(41,732 + 33.52) - $(1050 + 3900)

Add the values

Adjusted gross income = $(41, 765. 52 - 4950)

Subtract the values

Adjusted gross income = $36, 815. 52

Hence, the value is $36, 815. 52

Learn more about adjusted gross income here:

https://brainly.com/question/14059060

#SPJ1

Answer:

h/g is 3

Step-by-step explanation:

h=12 and g=4 12/4 is 3 so its h/g

Answer:

H/g

Step-by-step explanation:

12/4 = 3

Answer:

Part A: 38.1% of the members are seniors that play the trumpet

Part B:  22.9% of the members who are seniors play trumpet

Step-by-step explanation:

Part A:

8 of the 21 members play trumpet that are seniors

8/21 = .381 or %38.1 of the members

Part B:

8 of the 35 seniors in the marching band play trumpet

8/35 = .229 or %22.9 of the members

Answer: The equation 8y-5xy=9 is nonlinear because it contains the product of the variables x and y. In general, an equation is linear if it can be written in the form ax + by = c, where a and b are constants and x and y are variables. Equations that cannot be written in this form are nonlinear.

The equation y = 2x - 6 is a line in the form known as Slope-Intercept Form. This form organizes the equation so that you can easily discern the y-intercept and slope.

Slope-intercept form is y = mx + b. So here, m = 2, b = -6.

Manuel's argument is correct on why the volume of cone W and  square pyramid are related . Paul used the incorrect base area to find the volume of square pyramid X. Then the correct option is C.

A thick or empty device with an approximately round or elliptical base that tapers to a notch is known as a cone.

on the other hand ,

A three-dimensional geometric shape having a square base and four triangular faces/sides that meet at a single point (called vertex) is called a square pyramid.

Cone W has a radius of 6 cm and a height of 5 cm.

The base area of the cone will be

A = πr²

A = π (6)²

A = 113.04 square cm

Then the volume of the cone will be

V = (1/3) x base area x height

V = (1/3) x 113.04 x 5

V = 188.4 cubic cm

Square pyramid X has the same base area and height as cone W.

Then the volume of the square pyramid will be

V = (1/3) x base area x height

V = (1/3) x 113.04 x 5

V = 188.4 cubic cm.

Manuel's argument is correct on why the volume of cone W and  square pyramid are related . Paul used the incorrect base area to find the volume of square pyramid X. Then the correct option is C.

To know more about cone and square pyramid  visit ;

https://brainly.com/question/11553477

#SPJ1

The measurements in the given triangle ABC are A=64°, B=26°,

C=90°, a=7.4, b=3.61, c=8.23

An angle is a figure in Euclidean geometry made up of two rays that share a terminal and are referred to as the angle's sides and vertices, respectively. Angles created by two rays are located in the plane where the rays are located. The meeting of two planes can also create an angle. These are referred to as dihedral angles. The angle formed by the rays lying perpendicular to the two intersecting curves at their point of intersection can likewise be used to establish an angle between two intersecting curves.

Given,

In ΔABC, A=64°, a=7.4

From the figure we know that C=90°, as the given figure is a right triangle.

As we already know that,

Angles sum in a triangle=180°

A+B+C=180°

64°+B+90°=180°

B=180°-154°

B=26°

By using sine rule,

a/SinA =b/SinB=c/Sinc

7.4/Sin 64°=b/Sin 26°=c/ Sin 90°

b=7.4Sin26°/Sin 64°

b=3.61

c=7.4 Sin 90°/Sin 64°

c=8.23

Therefore, the measurements in the given ΔABC are A=64°, B=26°,

C=90°, a=7.4, b=3.61, c=8.23

To know more about angle, visit:

https://brainly.com/question/17039091

#SPJ1

280 is the number which is 16 2/3% more than 240

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

We would receive 16 times 3 plus 2 if we converted 16 2/3 to an improper fraction. Then, we would divide this number by 3, getting 50/3, which is equal to 50/3 divided by 100, or 1/6.

(1/6) th of 240 = 240/6 = 40

40 more than 240 = 280

So, 280 is the number which is 16 2/3% more than 240

To Learn more about the percentage form the link:

https://brainly.com/question/24304697

#SPJ1

The leftover after dividing 102 by 5 is the quotient, which is:

Quotient 20

Remainder 2

102 5: Quotient and Remainder

The quotient and remainder method is one way to determine the quotient and remainder of a division. The dividend (102) and the divisor are already known to us (5). Now, we need to determine the residual and the quotient:

The Quotient and Remainder procedure is as follows:

20 quotient, 5 | 102 dividend, -10 2, and a reminder

As can be seen:

The remainder is 2, while the quotient is 20.

Sometimes, the remaining part is referred to as the "modulo," or simply "mod." This notation is used to say that:

102 mod 5 = 2

To know more about quotient

https://brainly.com/question/358541

The rational zeros of the function can be found using the Rational Zero Theorem. The possible rational zeros of the function are ±1, ±5, ±1/7, ±5/7.

Zeros:

x=-5, -1/7, 0, 1, 5

The Rational Zero Theorem states that if a polynomial function of degree n has integer coefficients, then the possible rational zeros of the function will be of the form ±p/q, where q is a factor of the leading coefficient and p is a factor of the constant term.

In this case, the degree of the polynomial is 4, which means that the leading coefficient is 7 and the constant term is 5. Thus, the possible rational zeros of the function will be of the form ±p/q, where p is a factor of 5 and q is a factor of 7. The factors of 5 are ±1 and ±5, and the factors of 7 are ±1 and ±7. This means that the possible rational zeros of the function are ±1, ±5, ±1/7, and ±5/7.

To find the zeros of the function, we can use the rational zeros we found and plug them into the original equation. We can then solve for the zeros and find that the zeros of the function are x=-5, -1/7, 0, 1, 5.

x=-5: 7(-5)^4 +27(-5)^3 -40(-5)^2 +(-5) +5= 0

x=-1/7: 7(-1/7)^4 +27(-1/7)^3 -40(-1/7)^2 +(-1/7) +5= 0

x=0: 7(0)^4 +27(0)^3 -40(0)^2 +(0) +5= 0

x=1: 7(1)^4 +27(1)^3 -40(1)^2 +(1) +5= 0

x=5: 7(5)^4 +27(5)^3 -40(5)^2 +(5) +5= 0

Learn more about function here

https://brainly.com/question/29633660

#SPJ4

The inverse of the matrix A is (b) [tex]A^{-1} = \left[\begin{array}{cc}7&25\\-2&-7\end{array}\right][/tex]

From the question, we have the following parameters that can be used in our computation:

[tex]A = \left[\begin{array}{cc}-7&-25\\2&7\end{array}\right][/tex]

To calculate the inverse of the matrix, we start by calculating the determinant of the matrix

This is calculated as follows

|A| = -7 * 7 + 25 * 2

Evaluate the products in the above equation

So, we have the following representation

|A| = -49 + 50

Evaluate the sum in the above equation

So, we have the following representation

|A| = 1

The inverse is then calculated as

[tex]A^{-1} = \frac{1}{|A|} * \left[\begin{array}{cc}7&25\\-2&-7\end{array}\right][/tex]

Substitute the known values in the above equation, so, we have the following representation

[tex]A^{-1} = \frac{1}{1} * \left[\begin{array}{cc}7&25\\-2&-7\end{array}\right][/tex]

Evaluate the quotient

[tex]A^{-1} = 1 * \left[\begin{array}{cc}7&25\\-2&-7\end{array}\right][/tex]

This gives

[tex]A^{-1} = \left[\begin{array}{cc}7&25\\-2&-7\end{array}\right][/tex]

Hence, the inverse is (b)

Read more about matrix at

https://brainly.com/question/11989522

#SPJ1

To derive the formula that goes through these two points, we use the general equation for an exponential equation.

Y = a(b)^x

There we will substitute the two points into this equation to get two equations

45 = a(b)^2

5/9= a(b)^-1

By dividing the first equation by the second, we obtain:

27 = b^3

Therefore b= 3

We plug b=3 into the first equation using the second point:

45 = a(3)^2

We get a = 5

Therefore the equation is y = 5(9)^x

We can verify this equation by plugging in the two points given to see if it works.

5/9 = 5(9)^-1

5/9 = 5/9

And:

45 =5(9)^2

45 = 45

It does, so the equation is correct.

The answer is y =5(9)^x

To learn more about exponential equation refer to:

https://brainly.com/question/12940982

#SPJ1

The solution is written in Python

The given problem can be solved by using the rand() function that generates a random number over the range [0, RAND_MAX] and with the help of the value returned by this function, any number in any range [L, R] can be generated as (rand() % (R – L + 1)) + L. Follow the steps below to solve the problem:

Initialize an empty string, say S.

Iterate over the range [0, N – 1] and perform the following steps:

Store a random number in the range [0, 1] using rand() function.

Append the randomly generated 0 or 1 to the end of the string S.

After completing the above steps, print the string S as the resulting binary string.

This binary is to hold the binary string.

Next, we declare variable decimal, quotient and remainder (Line 2-4). We assign a test value 13 to decimal variable and then get the first quotient by dividing decimal with 2 (Line 3). Then we get the remainder by using modulus operator, % (Line 4). The first remainder will be the first digit joined with the binary string (Line 5).  

We need to repeat the process from Line 3-5 to get the following binary digits. Therefore create a while loop (Line 7) and set a condition that if quotient is bigger than 0 we keep dividing decimal by 2 and calculate the quotient and remainder and use the remainder as a binary digit and join it with binary string from the front (Line 9-11).

At last, we print the binary to terminal (Line 13).

To learn more about Binary visit :

brainly.com/question/27985749

#SPJ4

The probability that the dial stops on a yellow or blue slice will be 0.6667.

What is probability?

Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.

Then the probability is given as,

P = (Favorable event) / (Total event)

A spinner with 12 similarly measured cuts has 5 yellow cuts, 3 blue cuts, and 4 red cuts. The dial is turned and stops on a cut indiscriminately.

The total number of the event is given as,

Total events = 5 + 3 + 4

Total events = 12

The probability that the dial stops on a yellow or blue slice will be given as,

P = 3 / 12 + 5 / 12

P = 0.25 + 0.4167

P = 0.6667

The probability that the dial stops on a yellow or blue slice will be 0.6667.

More about the probability link is given below.

brainly.com/question/795909

#SPJ1

Since the function f(x) = 9.25x + 3 represents the amount of money that Radda earns dog walking for x hours, Radda's earnings would increase by $12.25 each hour.

In Mathematics, a linear function is sometimes referred to as an expression or the slope-intercept form of a straight line and it can be used to model (represent) the total amount of money that is being earned by Radda for dog walking;

T = mx + b

Where:

Therefore, the required linear function that represents the total amount of money that is being earned by Radda for dog walking per hour is given by this mathematical expression;

f(x) = T = 9.25x + 3

When the number of hours Radda spend dog walking is equal to 1 (x = 1), the rate of change(slope) can be calculated as follows;

f(1) = T = 9.25(1) + 3

f(1) = T = 9.25 + 3

f(1) = T = $12.25.

In this context, we can reasonably infer and logically conclude that Radda's earnings increases each hour by $12.25.

Read more on linear function here: brainly.com/question/27325295

#SPJ1

Complete Question:

The function f(x) = 9.25x + 3 represents the amount Radda earns dog walking for x hours. How much does Radda's earnings increase each hour?

The rate at which the top of ladder slide down is 8.48 ft/s. The negative sign implies that the height is reducing with time which is true because it is sliding down.

The well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, [tex]a^{2}+b^{2} =c^{2}[/tex]

Given that,

Length of the ladder is, [tex]l=9ft[/tex]

Let the top of ladder be at height of 'h' and the bottom of the ladder be at a distance of 'b' from the wall.

Now, from triangle ABC,

[tex]AB^{2} +BC^{2} =AC^{2}[/tex]

[tex]h^{2} +b^{2} =l^{2}[/tex]

[tex]h^{2} +b^{2}[/tex] = [tex]9^{2}[/tex]

[tex]h^{2} +b^{2}[/tex] = 81               (Equation-1)

Differentiating the above equation with respect to time, 't'.

So,

We can write,

[tex]\frac{d}{dt} (h^{2}+b^{2} )[/tex] = [tex]\frac{d}{dt}[/tex] (81)

[tex]\frac{d}{dt} (h^{2}+b^{2} )[/tex] = 0

[tex]2h\frac{dh}{dt} +2b\frac{db}{dt}[/tex] = 0

[tex]h\frac{dh}{dt} +b\frac{db}{dt}[/tex] = 0                (Equation-2)

In the above equation the term [tex]\frac{dh}{dt}[/tex] is the rate at which top of ladder slides down and [tex]\frac{db}{dt}[/tex] is the rate at which bottom of ladder slides away.

Let us assume,

h = 3 ft and db/dt = 3 ft/s

We can substitute values in equation-1,

[tex]3^{2} +b^{2}[/tex] = 81

9 + [tex]b^{2}[/tex] = 81

[tex]b^{2}[/tex] = 81-9

[tex]b^{2}[/tex] = 72

b = [tex]\sqrt{72}[/tex]

b = 8.48 ft

Now, plug in all the given values in equation (2) and solve for [tex]\frac{dh}{dt}[/tex]

3*[tex]\frac{dh}{dt}[/tex] + 8.48 * 3 = 0

3*[tex]\frac{dh}{dt}[/tex] + 25.44 = 0

3*[tex]\frac{dh}{dt}[/tex] = - 25.44

[tex]\frac{dh}{dt}[/tex] = -25.44/3

[tex]\frac{dh}{dt}[/tex] = - 8.48 ft/s

Therefore,

The rate at which the top of ladder slide down is 8.48 ft/s. The negative sign implies that the height is reducing with time which is true because it is sliding down.

To learn more about Pythagoras theorem visit :

brainly.com/question/28022959

#SPJ4

The solution is Option D.

The ratio of smoothie size to mangoes used for Kim is the same as the ratio of smoothie size to mangoes used for Angela

What is Proportion?

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

Given data ,

Let the equation be represented as A

Now , the value of A is

The number of mangoes used by Bri = 1 mango

The amount of smoothie size of Bri = 7 oz

The number of mangoes used by Kim = 3 mangoes

The amount of smoothie size of Kim = 21 oz

The number of mangoes used by Angela = 4 mangoes

The amount of smoothie size of Angela = 28 oz

Now , the proportion is given by

The ratio of smoothie size to mangoes used by Kim = amount of smoothie size of Kim / number of mangoes used by Kim

Substituting the values in the equation , we get

The ratio of smoothie size to mangoes used by Kim = 21 / 3

The ratio of smoothie size to mangoes used by Kim = 7 : 1

Now , the proportion is

The ratio of smoothie size to mangoes used by Angela = amount of smoothie size of Angela / number of mangoes used by Angela

Substituting the values in the equation , we get

The ratio of smoothie size to mangoes used by Angela = 28 / 4

The ratio of smoothie size to mangoes used by Angela = 7 : 1

So , The ratio of smoothie size to mangoes used by Kim = The ratio of smoothie size to mangoes used by Angela = 7 : 1

Hence , ratio of smoothie size to mangoes used by Kim is equal to ratio of smoothie size to mangoes used by Angela

To learn more about proportion click :

https://brainly.com/question/7096655

#SPJ1

Answer:

d

Step-by-step explanation:

i took the test and its right :)

The linear equation for y is y=9.

What is linear equation?

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) component are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."

-y+7 y-54=0

Add similar elements: -y+7 y=6 y

6 y-54=0

Move 54 to the right side

6 y=54

Divide both sides by 6

[tex]\frac{6 y}{6}=\frac{54}{6}[/tex]

Simplify

y=9

To learn more about linear equation visit:https://brainly.com/question/11897796

#SPJ1

Answer:

7.51

Step-by-step explanation:

16.72 - 9.21

Answer: B & A

Step-by-step explanation: I think?

Answer:obtuse angle

Step-by-step explanation:

An obtuse angle is an angle of greater than 90° and less than 180°. It is bigger than an acute angle. It is smaller than a straight angle, which measures 180°. Angles are measured with a protractor obtuse angle is specifically present in hexagon and pentagon and others.

1,458, 486, 162, 54,

Every succeeding number is getting divided by 3.

What is patterns ?

A recurring arrangement of numbers, shapes, colors, and other elements is known as a pattern. The Pattern may be connected to any kind of occasion or thing. When a group of numbers are arranged in a certain way, the arrangement is referred to as a pattern. Patterns can also occasionally be referred to as a series.

Pattern of even numbers: 2, 4, 6, 8, 10, 1, 14, 16, 18...

Pattern of odd numbers: 3, 5, 7, 9, 11, 13, 15, 17, 19.

Fibonacci sequence: 1, 1, 2, 3, 5, 8, 13, and 21. so on.

The patterns among our 1,458, 486, 162, and 54 data must be found.

1458/3 = 486

486/3 = 162

162/3 = 54

54/3 = 18

18/3 = 6

6/3 = 2

so the patterns is Every succeeding number is getting divided by 3.

To know more about patterns click the link:

brainly.com/question/7043766

#SPJ1

The number wreaths that Ms. Brooks make will be 7 wreaths.

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.

It should be noted that an expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles. Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features. People make a distinction between an expression and a formula, with the former designating a mathematical object and the latter a claim about such objects

Here, Ms. Brooks has 2 pieces of ribbon to make wreaths. One piece is 18 yards long and the other is 17 yards long.

Since each wreath requires 5 yards of uncut ribbon, the number of wreaths that Ms. Brooks make will be:

= (18 + 17) / 5

= 35 / 5

= 7 wreaths.

Learn more about expressions on:

brainly.com/question/723406

#SPJ1