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Fittoniya [83]
3 years ago
12

How to find radius.

Mathematics
2 answers:
andre [41]3 years ago
6 0

Answer:

21 cm

Step-by-step explanation:

To find the radius, half the diameter (42cm)

hope this helps :)

Kitty [74]3 years ago
6 0
21cm because the radius is always half of the diameter
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The probability is 51​% that the sample mean will be between what two​ values, symmetrically distributed around the population​
Alisiya [41]

Answer:

The lower bound is, -z=-0.69 and the upper bound is z=0.69.

Step-by-step explanation:

Let the random variable <em>X</em> follows a normal distribution with mean <em>μ </em>and standard deviation <em>σ</em>.

The the random variable <em>Z, </em>defined as Z=\frac{X-\mu}{\sigma} is standardized random variable also known as a standard normal random variable. The random variable  Z\sim N(0, 1).

The standard normal random variable has a symmetric distribution.

It is provided that P(-z\leq Z\leq z)=0.51.

Determine the upper and lower bound as follows:

P(-z\leq Z\leq z)=0.51\\P(Z\leq z)-P(Z\leq -z)=0.51\\P(Z\leq z)-[1-P(Z\leq z)]=0.51\\2P(Z\leq z)-1=0.51\\2P(Z\leq z)=1.51\\P(Z\leq z)=0.755

Use a standard normal table to determine the value of <em>z.</em>

The value of <em>z</em> such that P (Z ≤ z) = 0.755 is 0.69.

The lower bound is, -z=-0.69 and the upper bound is z=0.69.

5 0
3 years ago
A pool contains 3,600 cubic feet of water. If the length of the pool is 30 feet the width is 16 feet and the depth of the pool i
dexar [7]

Answer:

I’m pretty sure it’s 7.5, but I’m not sure! I’m sorry if it’s wrong!

4 0
3 years ago
What is the value of 8/36 in lowest terms ?
Illusion [34]

Simplify:

8/36=4/18=2/9=0.22222(repeating)

Your answer would be 2/9 or 0.22222(etc.).

I hope this helps :)

4 0
4 years ago
Read 2 more answers
A shop sells newspapers for a profit of 0.5%. His sales for the month of January were $8341.50. How much of this is profit?
Doss [256]
Amount of sales  of newspapers for the month of January = $8341.50
Percentage of profit for which the newspaper is sold = 0.5%
Then
Amount of profit made in the month of January = 0.5% * 8341.50 dollars
                                                                           = (0.5/100) * 8341.50 dollars
                                                                           = 4170.75/100 dollars
                                                                           = 41.707 dollars
                                                                           = 41.71 dollars
So the shop makes a profit of $41.71 in the month of January by selling newspapers worth $8341.50. I hope the procedure is perfectly clear for you to understand.
8 0
4 years ago
What is the volume of the right circular cylinder with a radius of 1 inch and a height of 1 inch
timama [110]

Answer:

D) 1pi in^3

Step-by-step explanation:

Volume formula for cylinder is:

V=pi*r^2*h

V=pi*1*1

V=pi in^3

6 0
3 years ago
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