Write 81 as a power in many ways as you can.

Options :

A) the confidence interval will be wider.

B) the confidence interval will be narrower.

C) there is not enough information to determine the effect on the confidence interval.

D) the confidence interval will be less likely to contain the parameter being estimated.

E) the confidence interval will not be affected.

Answer: A) The confidence interval will be wider

Step-by-step explanation: In statistics, When a higher confidence interval is used to estimate a proportion with other factors being held constant, the confidence interval will be wider. Since the confidence interval is aimed at tweaking the precision of our measurement or estimation, when we adopt a higher confidence level, we are trying g to reduce our chances of being wrong and hence increasing our precision and thus widening the level of confidence in the result obtained. That said, 95% confidence interval is wider than 90%. And 99% is wder than 95%.

Answer:

0.5

Step-by-step explanation:

8^3 = 512

(8^2)*(4^2) = 1024

512/1024 = 0.5

Answer:

The answer is D.

Step-by-step explanation:

By the time 4 seconds has passed, the line is at the bottom of the graph, which represents the time the ball has landed. I hope this helps.

Answer:

5/4

Step-by-step explanation:

Slope is y1-y2/x1-x2 so if you plug in the coordinates you get 4-(-1)/4-0 which you would get 5/4

Answer:

Possible

Step-by-step explanation:

Answer: f(2) = g(-2)

Step-by-step explanation: f(x) line if u go to the x axis you see that it’s 2 the x intercept.....

The g(x) line you go to the x axis and see it is -2, that is the x intercept

Answer:

l >= 9 and w >= 6

Step-by-step explanation:

The perimeter of the rectangle can be found by:

→ Perimeter = (2 x length) + (2 x width) (1)

Since the length is 3 inches greater than the width:

→ l = w + 3

Also, the perimeter is at least 30 inches

If you substitute the values in the equation 1:

→ (2 x l) + (2 x w) >= 30

→ (2 x (w + 3)) + (2 x w) >= 30

→ 2 x w + 6 + (2 x w) >= 30

→ 4 x w >= 24

→ w >= 6

Since l = w + 3, l >= 9

Answer:

Step-by-step explanation:

Answer:

a. 6.48 miles   b. 9.54 miles

Step-by-step explanation:

a. 7/x=x/6

x^2=42

x=6.48

b. 13/x=x/7

x^2=91

x=9.54

Answer:

A. 6.48 miles  

B. 9.54 miles

Step-by-step explanation:

hope this helps :-)

Answer:

18 x 15 x 3 is 810. The volume is 810.

Step-by-step explanation:

Volume of cuboid= Length*Width*Breadth

Volume of container= 18 cm X 15 cm X 3cm

Volume of container=810

Hope i helped

Answer:

[tex]810[/tex] centimeters cubed.

Step-by-step explanation:

The formula: [tex]Length * width * height[/tex]

[tex]18 *15*3 =810[/tex] centimeters cubed

Answer:

To get the solution, we are looking for, we need to point out what we know.  

1. We assume, that the number 52 is 100% - because it's the output value of the task.  

2. We assume, that x is the value we are looking for.  

3. If 52 is 100%, so we can write it down as 52=100%.  

4. We know, that x is 20% of the output value, so we can write it down as x=20%.  

5. Now we have two simple equations:

1) 52=100%

2) x=20%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

52/x=100%/20%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 20% of 52

52/x=100/20

(52/x)*x=(100/20)*x       - we multiply both sides of the equation by x

52=5*x       - we divide both sides of the equation by (5) to get x

52/5=x  

10.4=x  

x=10.4

now we have:  

20% of 52=10.4

Step-by-step explanation:

Answer:

225/4 sqrt(3) in ^3

Step-by-step explanation:

The volume is found by

V = Bh

The B is the triangle

B = s^2 sqrt(3)/4

  = 5^2 sqrt(3)/4

  25/4  sqrt(3)

We know the height is 9

V =  25/4  sqrt(3) *9

V = 225/4 sqrt(3)

this is approximately 97.42785793 in^3

Answer:

255

Step-by-step explanation:

EXPLANATION We are looking for the number of adult tickets sold. number of adult tickets sold =x We are given that there were 61 more student tickets sold than adult tickets. number of student tickets sold =+x61 The total number of tickets sold was 511.

Answer:

8

Step-by-step explanation:

[-2][-2]=-2 x-2=4

4+4=8

Answer:

Step-by-step explanation:

4x and 5x are supplementary, so they add up to 180.

4x + 5x = 180 and

9x = 180 so

x = 20.

Because DE and BA are parallel, then 2y and 70 degrees are alternate interior and are equal to one another.

2y = 70 so

y = 35

Answer:

Step-by-step explanation:

Notice that there are 16 pieces from the circle, which means each sector has an angle of

[tex]\theta = \frac{360\°}{16}=22.5\°[/tex]

Where all sectors have equal area.

Now, the area of the whole circle is [tex]12.25 \pi \ cm^{2}[/tex], if we use the formula of its area, we'll find the radius of the circle

[tex]A= \pi r^{2}\\ 12.25\pi = \pi r^{2}\\ r=\sqrt{12.25} \approx 3.5[/tex]

Notice that each piece works as an isosceles triangle, because each side is the radius, that is, they have the same length. So far, we know the sides of the isosceles triangle and one internal angle.

To find the height of the one piece, we need to use trigonometric reasons, because the height divides a triangle in two equal right triangles.

[tex]cos(11.25\°)=\frac{h}{3.5}\\ h=3.5 \times cos(11.25 \°)\\h \approx 3.43[/tex]

Therefore, the height is 3.43 centimeters, approximately.

Answer:

5/6

Step-by-step explanation:

Answer:

(5x+1)(2x^2+1)

Step-by-step explanation:

Add and subtract the second term to the expression and factor by grouping.

Answer:

10

Step-by-step explanation:

assuming those are meant to be absolute value brackets you have -5 x 2 which is -10 but because it is in the absolute value lines all answers become positive =10

Answer:

In most cases u are either given the value of "t" or the question would be written this way: y=sin20t where as, when comparing we would get the exact value of T(period) at the end

Answer:

The complete table is shown below.

Step-by-step explanation:

The data provided is:

Number Rolled       Observed Frequency       Relative frequency

          1                                     10                                [tex]\frac{10}{60}=\frac{1}{6}[/tex]

         2                                     12                                [tex]\frac{12}{60}=\frac{1}{5}[/tex]

         3                                     10                                [tex]\frac{10}{60}=\frac{1}{6}[/tex]

         4                                     10                                [tex]\frac{10}{60}=\frac{1}{6}[/tex]

         5                                      8                                [tex]\frac{8}{60}=\frac{2}{15}[/tex]

         6                                     10                                [tex]\frac{10}{60}=\frac{1}{6}[/tex]

    TOTAL                                60                                     1

The complete table is shown above.

Answer:

A= 1/5

B.2/15

Step-by-step explanation:

trust me i got it right on edg

Answer:

d. 40

Step-by-step explanation:

2x + x +( x + 20) have to all equal 180 degrees in a triangle.

2x + x + x + 20 = 180

2x + 2x + 20 = 180

4x + 20 = 180

4x = 180 - 20

x = (180-20) / 4

x = 160 / 4

x = 40

Answer:

Step-by-step explanation:

This is the answer that was right for me, I just did this question :) Hope this helps! :D

Answer:

Number of nickels: 2,

Number of dimes: 6

Step-by-step explanation:

Say d ⇒ number of dimes, n ⇒ number of nickels; from this we can formulate two equation knowing the cost per dime ⇒ $ 0.1, and the cost per nickel ⇒ $0.05

d + n = 8,

0.1 * d + 0.05 * n = 0.7 ⇒ Let us solve through substitution

d = 8 - n into 0.1 * d + 0.05 * n = 0.7,

0.1 * ( 8 - n ) + 0.05 * n = 0.7,

0.8 - 0.1 * n + 0.05 * n = 0.7,

0.8 - 0.1n + 0.05n = 0.7,

- 0.05n = - 0.1,

Number of nickels: 2 ⇒ Now let us substitute this value into the first equation as to solve for d, dimes

d = 8 - 2,

Number of dimes: 6

Answer:

Replace "is" with =, "less than" with –, and "a number" with n to get 16 = n – 5

Step-by-step explanation:

Hi, to answer this question we have to analyze the statement given and write an equation:

Sixteen is five less than a number

So, the number sixteen (16) is (=) five less (-5) than a number (n).

We have to subtract 5 to a number (x) and that expression must be equal to 16.

Mathematically speaking:

16= n-5

So, the correct option is:

Replace "is" with =, "less than" with –, and "a number" with n to get 16 = n – 5

Feel free to ask for more if needed or if you did not understand something.  

Answer:

C :)

Step-by-step explanation:

before you go, don't forget to smile:)

Answer:

37

Step-by-step explanation:

135-98 equals 37

Answer:

y = 400 (amt invested at 4%)

x = 500 (amt invested at 7%)

Step-by-step explanation:

Kindly check attached picture for detailed explanation

Answer:

3/2

Step-by-step explanation:

Since the lines goes through the point (0,0)

We have a point (2,3)

The slope is y/x = 3/2

Answer:

C. A condition in which a quantity increases at a rate that is

proportional to the current value of the quantity

Step-by-step explanation:

Exponential growth is increasing, but not at a steady rate. On a graph, it has a curve instead of being a straight line.

Answer:

because

most people like green apples

Answer:

13.015625

Step-by-step explanation:

Answer:

13 remainder 1.

I have attached the work to your question.

Please see the attachment below.

I hope this helps!