The possible values of n are 1 and 2, as there can be two non-integer positive numbers whose product is equal to 12. Option B is correct.
All the possible ways to express 12 as a product of three positive numbers:
1 x 2 x 6
1 x 3 x 4
To identify which products have two non-integer factors.
From the above list, we see that only the first product, 1 x 2 x 6, has two non-integer factors (2 and 6).
From the following complete list of the possible values of n if the product of 3 positive numbers is equal to 12 and 3 positive numbers of n are not integers then answer is option (b) 1, 2.
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[LAST QUESTION, OFFERING BRAINLIEST]
??? PTS
Answer:
Step-by-step explanation:
Let h be the height of the trapezoid.
The area of a trapezoid is given by the formula:
Area = (1/2) × (sum of parallel sides) × (height)
In this case, we know that the area is 21 cm², one base length is 5 cm, and the other base length is 9 cm. So we can write:
21 = (1/2) × (5 + 9) × h
Simplifying this equation, we get:
21 = 7h
Dividing both sides by 7, we get:
h = 3
Therefore, the height of the trapezoid is 3 cm.
Answer:
Height of Trapezium is 3 cm.Step-by-step explanation:
Area of Trapezium is 21 cm². Parallel sides are 5 cm and 9 cm .
Shorter parallel side is 5 cm and the Longer Side is 9 cm.
As we know that formula of area of Trapezium is,
Area of Trapezium = ½ (a + b) hWhere,
a and b are Parallel sides and h is the height.On substituting the values of area and the two parallel sides in the above formula we will get the required Height.
Substituting the values,
21 = ½ (5 + 9)h
21 = ½ × 14 × h
21 = 7 × h
h = 21/7
h = 3 cm
Therefore, Height of the Trapezium will be 3 cm respectively.
Let θ = 855∘. Complete parts (a), (b), and (c) below. (a) Sketch θ in standard position. (b) Find an angle between 0∘ and 360∘ that is coterminal with θ. (c) Find an angle between −360∘ and 0∘ that is coterminal with θ
Let θ be equal to 855∘. Sketch θ in standard position. θ = 855∘ is in the fourth quadrant of the coordinate plane θ = 855∘
The given angle, θ, is a positive angle. It is measured in the counterclockwise direction from the initial side to the terminal side.Hence, we sketch θ in the standard position with its initial side along the positive x-axis.
Find an angle between 0∘ and 360∘ that is coterminal with θ.
The angle between 0∘ and 360∘ that is coterminal with θ is given by:
θ1 = θ - n × 360∘θ1 = 855∘ - 2 × 360∘θ1 = 855∘ - 720∘θ1 = 135∘
Therefore, an angle between 0∘ and 360∘ that is coterminal with θ is 135∘.Find an angle between −360∘ and 0∘ that is coterminal with θ.
The angle between −360∘ and 0∘ that is coterminal with θ is given by:
θ2 = θ + n × 360∘θ2 = 855∘ + 2 × 360∘θ2 = 855∘ + 720∘θ2 = 1575∘
Therefore, an angle between −360∘ and 0∘ that is coterminal with θ is 1575∘.To learn more about “angle” refer to the https://brainly.com/question/25716982
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stive efforts in
Eamples (finding slope in tables and graphs)
termine the slope of each linear equation. You may want to use the slope formula.
X O
1
2
3
y
S5
7
9
11
b)
566
X
-7
-6
-5
-4
y
10
7
4
1
c)
X
-2
0
2
4
y
I
3
5
can't
7
9
The slope of a linear equation is an important skill to have, as it can be used to identify the rate of change of the equation, and can be used to predict future values of the equation.
What is equation?An equation is an expression that states the equality of two things. It typically consists of an equal sign (=) and two expressions on either side of the equal sign that represent the same thing. Equations are used to describe relationships between different variables and can be used to solve mathematical problems. They can also be used to show the relationships between different quantities in physics and chemistry.
a)The slope of this linear equation can be determined by using the slope formula, which is rise over run. In this equation, the rise is 6, and the run is 2, so the slope is 3.
b) The slope of this linear equation can be determined by using the slope formula, which is rise over run. In this equation, the rise is 3, and the run is -7, so the slope is -3/7.
c) The slope of this linear equation can be determined by using the slope formula, which is rise over run. In this equation, the rise is 4, and the run is 6, so the slope is 2/3.
Finding slope in tables and graphs is a common mathematical skill that is used to identify the rate of change of a linear equation. This is determined by finding the change in the dependent variable (the y-axis) divided by the change in the independent variable (the x-axis). This is what is referred to as the slope of the equation. To find the slope in tables and graphs, you must look at the differences between the points on the x-axis and y-axis, and divide the change in the y-axis by the change in the x-axis. This will give you the slope of the equation. Finding the slope of a linear equation is an important skill to have, as it can be used to identify the rate of change of the equation, and can be used to predict future values of the equation.
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(x+2)^2=-16 This equation had no solution, why not?
[tex](x+2)^2=-16\implies x+2=\sqrt{-16}\implies x+2=\sqrt{-1\cdot 16} \\\\\\ x+2=\sqrt{-1}\cdot \sqrt{16}\implies x+2=4i[/tex]
so, whenever you take an "even root" of a "negative value", you'd end up with an imaginary root or value, which is another way to say, such root doesn't really exist or no solution.
now, we can look at it this way, the same equation is really just a parabola like (x+2)² + 16 = 0, notice, the parabola is in vertex form, its vertex is at (-2 , 16), on the II Quadrant 16 units up above the x-axis. A solution or what's called a solution or root or zero is really nothing but just an x-intercept, well, the parabola's vertex is way up and is opening upwards, so it never touches the x-axis, no zeros, no solution.
Check the picture below.
150,000 bonds with a coupon rate of 11 percent and a current price quote of 108; the bonds have 20 years to maturity. 320,000 zero coupon bonds with a price quote of 16 and 30 years until maturity. Both bonds have a par value of $1,000 and semiannual coupons
The total value of both bonds is $704,367,500.
Coupon payment = [tex]\frac{Coupon rate * Par value}{2}[/tex]
Coupon payment = [tex]\frac{11 * $1,000}{2}[/tex]
Coupon payment = $55
PV = [tex]55 * [1 - (1 + 0.04)^{^-40} ] / 0.04 + $1,000 / (1 + 0.04)^40[/tex]
[tex]PV = $1,026.45[/tex]
[tex]Total value = PV * Number of bonds * Par value\\Total value = $1,026.45 * 150,000 * $1,000\\Total value = $153,967,500[/tex]
[tex]PV = \frac{Price}{(1 + r)^n}[/tex]
[tex]PV = \frac{16}{(1 +0.03)^60}\\PV = $1.72[/tex]
[tex]Total value = PV * Number of bonds * Par value\\Total value = $1.72 * 320,000 * $1,000\\Total value = $550,400,000[/tex]
Therefore, the total value of both bonds is:
[tex]Total value = Value of coupon bonds + Value of zero coupon bonds\\Total value = $153,967,500 + $550,400,000\\Total value = $704,367,500[/tex]
A coupon rate is the annual interest rate paid by a bond or other fixed-income security to its bondholders or investors. It is typically expressed as a percentage of the bond's face value, also known as its par value. For example, if a bond has a face value of $1,000 and a coupon rate of 5%, the bond will pay $50 in interest each year to its bondholders. The coupon payments are usually made semi-annually or annually, depending on the terms of the bond.
The coupon rate is set when the bond is issued and remains fixed throughout the life of the bond unless the bond issuer chooses to call the bond or the bond defaults. Coupon rates are determined by a variety of factors, including market conditions, the creditworthiness of the issuer, and the length of the bond's maturity.
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Complete Question: -
The IPO Investment Bank has the following financing outstanding,
Debt: 150,000 bonds with a coupon rate of 11 percent and a current price quote of 108; the bonds have 20 years to maturity. 320,000 zero coupon bonds with a price quote of 16 and 30 years until maturity. Both bonds have a par value of $1,000 and semiannual coupons.
Preferred stock: 240,000 shares of 9 percent preferred stock with a current price of $67, and a par value of $100.
Common stock: 3,500,000 shares of common stock; the current price is $53, and the beta of the stock is.9.
Market: The corporate tax rate is 24 percent, the market risk premium is 8 percent, and the risk-free rate is 5 percent.
What is the WACC for the company? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)
To test the durability of cell phone screens, phones are dropped from a height of 1 meter until they break. A random sample of 40 phones was selected from each of two manufacturers. The phones in the samples were dropped until the screens broke. The difference in the mean number of drops was recorded and used to construct the 90 percent confidence interval (0. 46,1. 82) to estimate the population difference in means
The population difference means will be captured by about 90% of the intervals built.
Confidence interval of x%
Built from a sample, a confidence interval has bounds a and b and a confidence level of x%. It signifies that the population mean is between a and b, and we are x% certain about this.
In this instance:
The difference between population means has a 90% confidence interval, which is (0.46, 1.82). This means that 90% of intervals will capture the genuine difference between the population means, which is between these two values, and that the right response is 90% of the time.
The entire group about whom you want to make conclusions is referred to as a population. The particular group from which you will gather data is known as a sample. The sample size is always smaller than the population as a whole. A population in research doesn't usually refer to humans.
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The actual question is :
To test the durability of cell phone screens, phones are dropped from a height of 1 meter until they break. A random sample of 40 phones was selected from each of two manufacturers. The phones in the samples were dropped until the screens broke. The difference in the mean number of drops was recorded and used to construct the 90 percent confidence interval (0.46, 1.82) to estimate the population difference in means. Consider the sampling procedure taking place repeatedly. Each time samples are selected, the phones are dropped and the statistics are used to construct a 90 percent confidence interval for the difference in means. Which of the following statements is a correct interpretation of the intervals?
A. Approximately 90 percent of the intervals will extend from 0.46 to 1.82.
B. Approximately 90 percent of the intervals constructed will capture the difference in sample means.
C. Approximately 90 percent of the intervals constructed will capture the difference in population means.
D. Approximately 90 percent of the intervals constructed will capture at least one of the sample means.
E. Approximately 90 percent of the intervals constructed will capture at least one of the population means.
LOVE is a kite. LV and OE are diagonals. The segments DV = 9cm and LE = 15cm, and
The lengths of LV and OE are 15cm, and the lengths of LD and EV are 3√7 cm and 9/√7 cm, respectively.
Since LOVE is a kite, LV and OE are perpendicular bisectors of each other. Let the length of LD be x, and the length of EV be y. Then, we can use the Pythagorean theorem and the fact that the diagonals bisect each other to set up two equations:
x² + (LV/2)² = DV²/4
y² + (OE/2)² = LE²/4
Simplifying each equation and substituting the given values, we get:
x² + (LV/2)² = 81/4
y² + (OE/2)² = 225/4
We also know that the diagonals bisect each other, so we can set up another equation:
LV/2 + OE/2 = LO = VE
Substituting the given value for LE, we get:
LV/2 + OE/2 = 15
Solving this equation for one of the variables, we get:
LV = 30 - OE
Substituting this expression into the first equation above, we get:
x² + ((30 - OE)/2)² = 81/4
Simplifying and rearranging, we get:
OE² - 60OE + 675 = 0
Using the quadratic formula, we get:
OE = (60 ± √(3600 - 2700)) / 2
OE = 15 or 45
If OE = 15, then LV = 30 - 15 = 15, and we can solve for x and y:
x² + 7.5² = 81/4
y² + 7.5² = 225/4
Solving these equations, we get:
x = 3√7
y = 9/√7
If OE = 45, then LV = 30 - 45 = -15, which is impossible for a length. Therefore, the solution is:
LV = OE = 15
x = 3√7
y = 9/√7
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Complete question:
LOVE is a kite. LV and OE are diagonals. The segments DV = 9cm and LE = 15cm are given. Find the lengths of the other segments of the diagonals, DV, OE, and LV.
given the discussion in example 9.4.4, what is the maximum possible length of the repeating section of the decimal representation of 727 1,229 ?
The maximum possible length of the repeating section of the decimal representation of 727 1,229 is 7.
The maximum possible length of the repeating section of the decimal representation of 727 1,229 is 7. The repeating section is comprised of 729.
To calculate this, first consider the prime factorization of 727 1,229. 727 1,229 = 17 × 43 × 137.
Since 17, 43 and 137 are all prime numbers, the prime factorization will not yield a power of 10 as a factor. Therefore, the repeating section must have a length of 7 in the decimal representation of 727 1,229.
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What is the distance from the point (15,-21) to the line for which f(4)=-8 and f(8)=-18
The distance from the point (15,-21) to the line is 5.39 units.
What is point slope form?The equation of a line in point-slope form is:
y - y1 = m(x - x1) (x - x1)
where (x1, y1) is a point on the line and m is the slope of the line. When we are unsure of the y-intercept but are aware of the line's slope and a point on the line, we can utilise this form of the equation.
To calculate the equation of a line using the point-slope method, we must first determine the slope of the line using the following formula:
m = (y2 - y1)/(x2 - x1) (x2 - x1)
where the two points on the line are (x1, y1) and (x2, y2). We may enter the slope, along with one of the line's points, into the point-slope form to obtain the equation of the line.
Given that, the line has the following values f(4)=-8 and f(8)=-18.
The coordinates of the line are (4, -8) and (8, -18)
Thus, the slope of the line is:
m = y2 - y1/ x2 - x1
m = -18 + 8 / 8 - 4
m = -10/4 = -5/2
Now the slope intercept form is given as:
y - y1 = m (x - x1)
Substitute the values:
y + 8 = -5/2(x - 4)
2y + 16 = -5x + 20
2y = -5x + 20 - 16
2y = -5x + 4
The distance from the line to point is given as:
Distance = |ax + by + c| / √(a² + b²)
Substituting the values:
Distance = |-5(15) + -2(-21) + 4| √(-5² + -2²)
Distance = |-29|/ 5.38
Distance = 5.39
Hence, the distance from the point (15,-21) to the line is 5.39 units.
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CAN SOMEONE PLEASE HELP ME OUT HERE with as much work as possible
HELP. I'm really struggling on this one. My calculus teacher claimed this to be the easiest math problem ever but I still can't understand. Is anyone smart enough to figure this one out. Whats 1 + 1?
Answer:
The answer to 1 + 1 is 2.
Very complicated problem, please mark brainliest!
Answer:
1+1 = 2
Or, 1=2-1
1=1
we know value of one is one
so,
1+1=11
A man sells an article at rs 600 and makes a profit of 20%. Calculate it's profit percentage?
Answer:
720
Step-by-step explanation:
20% of 600 is 120, so add them together and you get 720
Bethany wants to build a wooden deck on her patio, which is in the shape of a parallelogram. The area of the patio is 580 ft2. Find the base. Round your answer to the nearest foot.
The base of the parallelogram is 18. 3 feet
How to determine the base of the parallelogramFrom the information given, we have that;
Area = 280ft^2
height = 5x
Base = 6x
Note that he formula that is used for calculating the area of the parallelogram is represented with the equation;
Area = bh
Given that the parameters are;
b is the base of the parallelogramh is the height of the parallelogramSubstituting the values of area, base and height.
280 = 5x × 6x
280 = 30x^2
Divide both sides by 30
x^2 = 280/30
Find the square root of both sides
x = √(280/30)
We have that the base = 6x
Substitute the value of x, we get;
Base = 6x = 6(√(280/30))
Base = 18.3ft
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The mail carrier has to deliver 3 boxes. The first box has a mass of 80 kilograms, the second box has a mass of 40 kilograms, and the third box has a mass of 60 kilograms. What is the total mass of all 3 boxes in grams?
180 grams
1,800 grams
18,000 grams
180,000 grams
Answer: 180,000 g
Step-by-step explanation:
1st add all masses together:
80kg + 40kg + 60 kg = 180 kg
then we need to convert kilograms to grams:
1 kg = 1000g
180kg * (1000g / 1kg) = 180,000 g
To calculate the total mass (in grams) of the three boxes, we first need to convert their masses from kilograms to grams and then add them together.
The mass of the first box is 80 kg, which is equivalent to 80,000 grams (because 1 kg = 1000 grams).
The mass of the second box is 40 kilograms, or 40,000 grams.
The mass of the third box is 60 kilograms, or 60,000 grams.
To find the total mass of the three boxes, we add these values:
80,000 grams + 40,000 grams + 60,000 grams = 180,000 grams
Therefore, The total mass of the three boxes in gram is 180,000
The correct answer is D) 180,000
use the formula for the sum of a geometric series to find the sum or state that the series diverges. (use symbolic notation and fractions where needed. enter dne if the series diverges.) (4^3 / 5^3) + (4^4 / 5^4) + (4^5 / 5^5) = ________--
The sum of the geometric series is 3904/3125.
By using the formula for the sum of a geometric series, we'll have to identify the first term, the common ratio, and the number of terms.
Let's identify the first term, the common ratio, and the number of terms in the given series as shown below;
The first term, a = 4³/5³
Common ratio, r = 4/5
The number of terms, n = 3
We have identified the values of a, r, and n, we can now substitute them into the formula for the sum of a geometric series, shown below;
S_n = a(1 - rⁿ) / (1 - r)
S₃ = {(4³/5³) [1 - (4/5)³]} / [1 - (4/5)]
S₃ = {(64/125) [1 - (64/125)]} / [1/5]
S₃ = (64/125) [(125-64)/125] [5/1]
S₃ = (64/125) (61/125) (5)
Therefore, S₃ = 3904/3125.
Thus, the sum of the geometric series (4³/5³) + (4⁴/5⁴) + (4⁵/5⁵) is equal to 3904/3125.
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In ΔJKL, the measure of ∠L=90°, JK = 7. 3 feet, and KL = 4. 7 feet. Find the measure of ∠J to the nearest tenth of a degree
The measure of ∠J in ΔJKL is approximately 57.5 degrees.
The measure of ∠J in ΔJKL can be found using the trigonometric function tangent, which is defined as the ratio of the opposite side to the adjacent side.
The straight line that "just touches" the plane curve at a given point is called the tangent line in geometry. It was defined by Leibniz as the line that passes through two infinitely close points on the curve.
tan(∠J) = JK/KL
tan(∠J) = 7.3/4.7
∠J = arctan(7.3/4.7)
∠J = 57.5 degrees (rounded to the nearest tenth of a degree)
Therefore, the measure of ∠J in ΔJKL is approximately 57.5 degrees.
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a rectangular swimming pool 50 ft long, 30 ft wide, and 8 ft deep is filled with water to a depth of 6 ft. use an integral to find the work required to pump all the water out over the top. (take as the density of water lb/ft. )
The work required to pump all the water out of the rectangular swimming pool over the top is approximately 2,323,200 ft-lb.
We have,
To find the work required to pump all the water out of the rectangular swimming pool, we can use the concept of work as the force multiplied by the distance.
First, let's calculate the weight of the water in the pool.
The weight of an object is given by the formula:
Weight = mass x gravitational acceleration
Since the density of water is given as 1 lb/ft³, we need to find the volume of water in the pool.
The volume of the pool is given by the formula:
Volume = length x width x depth
Volume = 50 ft x 30 ft x 6 ft = 9000 ft³
Now, let's calculate the weight of the water:
Weight = density x volume x gravitational acceleration
Weight = 1 lb/ft³ x 9000 ft³ x 32.2 ft/s² ≈ 290,400 lb
To pump all the water out over the top, we need to raise it to the height of the pool, which is 8 ft.
The work required to pump the water out is given by the formula:
Work = weight x height
Work = 290,400 lb x 8 ft = 2,323,200 ft-lb
Therefore,
The work required to pump all the water out of the rectangular swimming pool over the top is approximately 2,323,200 ft-lb.
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5. If j(x) = x+8, find x such that
j(x)=10
Suppose a single trial experiment results in one of three mutually exclusive events, A, B, or C. It is known that P(A) = 0.3, P(B) = 0.6, and P(C) = 0.1. Find the probability P(ANC) Answer: Question 2 Not yet answered Points out of 2.00 P Flag question Refer to the previous question. Find the probability P(AUB). Answer:
intersection of A and B events, P(A ∩ B) is 0. So, P(A U B) = P(A) + P(B) = 0.3 + 0.6 = 0.9Hence, P(AUB) = 0.9.
Probability of P(ANC)We know that events A, B and C are mutually exclusive.
Therefore, if A, B, and C are mutually exclusive events, then P(A U B U C) = P(A) + P(B) + P(C). Given, P(A) = 0.3,P(B) = 0.6,P(C) = 0.1
Therefore, P(A U B U C) = P(A) + P(B) + P(C) = 0.3 + 0.6 + 0.1 = 1Now, P(ANC) = 1 - P(A U B U C) = 1 - 1 = 0
Probability the intersection of A and B events, P(A ∩ B) is 0. So, P(A U B) = P(A) + P(B) = 0.3 + 0.6 = 0.9
Hence, P(AUB) = 0.9.ility of P(AUB)We know that events A, B and C are mutually exclusive.
Therefore, if A, B, and C are mutually exclusive events, then P(A U B U C) = P(A) + P(B) + P(C)
Now, we need to find P(AUB). If two events A and B are not mutually exclusive events, then the probability of their union P(A U B) can be found as follows; [tex]P(A U B) = P(A) + P(B) - P(A ∩ B)[/tex]We know that events A, B and C are mutually exclusive.
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What is the volume of a hemisphere with a diameter of 5.5cm, rounded to the nearest tenth of a cubic centimeter.
if the hemisphere has a diameter of 5.5, then its radius is half that or 2.75.
[tex]\textit{volume of a hemisphere}\\\\ V=\cfrac{2\pi r^3}{3}~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=2.75 \end{cases}\implies V=\cfrac{2\pi (2.75)^3}{3}\implies V\approx 44~cm^3[/tex]
In each expression below the numbers under the root sign all add to the same number, 10. Determine which expression is greatest. How?
a) √7+ √3
b) √6+ √4
c) √8+ √2
Answer:
Step-by-step explanation:
I think a calculator is the only way to solve this question:
[tex]\sqrt{7} +\sqrt{3} = 2.96\\\\\sqrt{6} +\sqrt{4} = 2.54\\\\\sqrt{8} +\sqrt{2} =3.07[/tex]
So (c) is the greatest.
A+9 as a verbal expression
Answer:
"9 more than A" is a verbal expression.
what is the angle of x when the other is 51
Answer:
I'm sorry, your question is not clear. Please provide more information or context so I can better understand what you are asking.
Step-by-step explanation:
Brainliest if correct
Answer: a > -1
Explanation is in the image.
Answer:
[tex]a > -1[/tex]
Step-by-step explanation:
1) Write the equation
[tex]-2a+14 < 5a+21\\[/tex]
2) Collect like terms on their corresponding side
[tex]-7a < 7[/tex]
3) Divide -7 from both sides and flip the sign
[tex]a > -1[/tex]
Alan is designing a costume for a
play. The graph shows the time it
takes him to sew the fabric. What
length of fabric can Alan sew in
1.5 minutes?
120
100
€80
Length (ft)
60
40
20
O
y
1
2 3 4
Time (min)
Alan can sew 60 feet of fabric in 1.5 minutes.
Describe Slope?In mathematics, slope is a measure of the steepness of a line. It is defined as the ratio of the change in the vertical (y) coordinate to the change in the horizontal (x) coordinate between two points on the line. In other words, slope represents the rate at which the line is rising or falling. The slope of a line can be positive, negative, zero or undefined, depending on the direction and steepness of the line. The slope formula is given by:
slope = (y2 - y1) / (x2 - x1)
where (x1, y1) and (x2, y2) are two points on the line. The slope is often denoted by the letter m.
We can see that the relationship between time and length of fabric is a linear one. Using the two given points (1, 40) and (2, 80), we can find the slope of the line:
slope = (change in y) / (change in x) = (80 - 40) / (2 - 1) = 40
This means that for every 1 minute, Alan can sew 40 feet of fabric. To find how much fabric he can sew in 1.5 minutes, we can use the equation for a line:
y = mx + b
where y is the length of fabric, x is the time in minutes, m is the slope we just found, and b is the y-intercept (which we can find by plugging in one of the points).
Using the point (1, 40), we get:
40 = 40(1) + b
b = 0
So the equation for the line is:
y = 40x
To find the length of fabric Alan can sew in 1.5 minutes, we plug in x = 1.5:
y = 40(1.5) = 60
Therefore, Alan can sew 60 feet of fabric in 1.5 minutes.
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The complete question is:
which of the following is a characteristic of a reliable scientific poll? choose 1 answer: choose 1 answer: (choice a) small sampling error a small sampling error (choice b) required names for all respondents b required names for all respondents (choice c) entire population surveyed c entire population surveyed (choice d) open-ended questions d open-ended questions
The characteristic of a reliable scientific poll is small sampling error. The small sampling error is a characteristic of a reliable scientific poll.
What is a scientific poll?Scientific polls are surveys that gather and evaluate people's opinions or responses to questions. These surveys are done in a scientific way, implying that pollsters use scientifically proven techniques to gather responses and analyze data.A reliable scientific poll must have a small sampling error. A sampling error is the deviation of the sample mean from the population mean due to random error. The smaller the sample size, the more likely it is that the results will be imprecise. As a result, it's essential to conduct a reliable scientific poll with a sample size that is representative of the population as a whole.The option for the correct answer to this question is; (choice a) small sampling error.
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a 12 cm tall and radius of 10 cm cylinder is filled with 10 cm of water. find a) the rotational speed at which the water just touches the bottom of the cylinder and b) the resulting pressure at points a and b.
a 12 cm tall and radius of 10 cm cylinder is filled with 10 cm of water.
a) Rotational speed at which the water just touches the bottom of the cylinder:
We will use the formula for centripetal force for a liquid with the volume of a cylinder to obtain the rotational speed at which the water just touches the bottom of the cylinder.
The formula for centripetal force for a liquid with the volume of a cylinder is as follows:
F = (ρr²πh)ω²WhereF:
Centripetal forceρ: Densityr: Radiush : Heightω: Rotational speed Substituting the given values,
we get: F = (1000 kg/m³ × (0.1m)² × π × 0.12m)ω²F
= 377 Nω
= √(F/m)ω
= √(377 N/ 10 kg)ω
= √37.7ω = 6.14 rad/sb)
Pressure at points A and B:
We will use the formula for hydrostatic pressure for a liquid to calculate the pressure at points A and B. The formula for hydrostatic pressure for a liquid is as follows:
P = ρgh
Where,
P: Pressureρ: Densityg: Acceleration due to gravity: DepthSubstituting the given values for point A,
we get P = 1000 kg/m³ × 9.8 m/s² × 0.1 mP
= 980 Pa
Substituting the given values for point B,
we get P = 1000 kg/m³ × 9.8 m/s² × 0.22 mP
= 2156 Pa
The resulting pressure at point A is 980 Pa and the resulting pressure at point B is 2156 Pa.
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Describe the following pair of angles as of COMPLEMENTARY, SUPLEMENTARY or NEITHER: A. COMPLEMENTARY B. SUPLEMENTARY C. NEITHER D. NOT ENOUGH INFORMATION (IT DEPENDS ON THE VALUE OF x ) A B C D
Option (D) is correct because we can not determine whether the given pair of angles are complementary, supplementary, or neither
The given pair of angles can be either complementary or supplementary, depending on the value of x.
Complementary Angles: Two angles whose sum is 90 degrees are called complementary angles. In other words, if the sum of two angles is 90 degrees, then they are called complementary angles.
Supplementary Angles: Two angles whose sum is 180 degrees are called supplementary angles. In other words, if the sum of two angles is 180 degrees, then they are called supplementary angles.
Neither: If the sum of two angles is neither 90 degrees nor 180 degrees, then they are called neither complementary nor supplementary angles.
Not Enough Information (It depends on the value of x): If the measure of x is not given, then we cannot determine whether the given pair of angles are complementary, supplementary, or neither.
Hence, it depends on the value of x. Therefore, option D is the correct answer.
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Let all of the numbers given below be correctly rounded to the number of digits shown. For each calculation, determine the smallest interval in which the result, using true instead of rounded values, must lie. (a) 1.1062+0.947 (b) 23.46 - 12.753 (c) (2.747) (6.83) (d) 8.473/0.064
An interval is a set of real numbers that contains all real numbers lying between any two numbers of the set.
For each calculation, the smallest interval in which the result, using true instead of rounded values, must lie is as follows:
(a) 1.1062+0.947 = 2.0532 ≤ true result ≤ 2.053
(b) 23.46 - 12.753 = 10.707 ≤ true result ≤ 10.708
(c) (2.747) (6.83) = 18.6181 ≤ true result ≤ 18.6182
(d) 8.473/0.064 = 132.3906 ≤ true result ≤ 132.3907
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In two similar triangles, the ratio of the lengths of a pair of corresponding sides is 7:8. If the perimeter of the larger triangle is 32, find the perimeter of the smaller triangle.
The perimeter of the smaller triangle would be = 28.1
How to calculate the perimeter of the smaller triangle?A triangle can be defined as a three sided polygon that has a total internal angle of 180°.
To calculate the perimeter of the triangle is to find out the scale factor that exists between the two triangles.
The formula for scale factor = original object/new object
Scale factor= 8/7 = 1.14
The perimeter of the smaller triangle = 32/1.14
= 28.1.
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