3 years ago

How to do it this question

Mathematics

1 answer:

PtichkaEL [24]3 years ago

7 0

Answer:

701000000

Step-by-step explanation:

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What is y to the 2 power = 81

iren [92.7K]

Answer:9

Step-by-step explanation:

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3 years ago

What is the volume of a right circular cylinder with a radius of 5 cm and a height of 12 cm?

aalyn [17]

Answer:

942.48

Step-by-step explanation:

use the formula v=bh

step 1:find base use the formula to find the area of the circle

step 2:then multiply your answer of base with your height

like this $\pi5^{2}$ then 78.59(12)

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3 years ago

Suppose that the probabilities of a customer purchasing 0, 1, or 2 books at a book store are 0.20.2, 0.30.3, and 0.50.5, res

PIT_PIT [208]

Answer:

0.78

Step-by-step explanation:

We have the next probability distribution:

X P(X)

0 0.2

1 0.3

2 0.5

As we can see when we add all the probabilites the result is 1. Now calculating the mean we have:

$mean=\mu=(0\times0.2)+(1\times 0.3)+(2\times 0.5)=0+0.3+1=1.3$

The standard deviation is:

$\sigma=\sqrt{\sum(x-\mu)^{2}(P(x))}$

Then using the data that we have:

$\sigma=\sqrt{\sum(x-\mu)^{2}(P(x))}\\\sigma=\sqrt{(0-1.3)^{2}(0.2)+(1-1.3)^{2}(0.3)+(2-1.3)^{2}(0.5)}\\\\\sigma=\sqrt{(-1.3)^{2}(0.2)+(-0.3)^{2}(0.3)+(0.7)^{2}(0.5)}\\\\\sigma=\sqrt{(1.69)(0.2)+(0.09)(0.3)+(0.49)(0.5)}\\\\\sigma=\sqrt{0.338+0.027+0.245}\\\\\sigma=\sqrt{0.61}\\\\\sigma=0.78\\$

Then the standard deviation is 0.78

6 0

3 years ago

What is the base of a triangle that has a height of 6 centimeters and an area of 18 centimeters?

Alik [6]

A=1/2×b×h
18=1/2×b×6
18=3×b
b=6

6 0

3 years ago

Read 2 more answers

1/71 in multiplication inverse

Cloud [144]

Answer:

Step-by-step explanation:

1/71 * ? = 1

1/71 * x = 1 [consider 'x']

x = 1/(1/71)

x = (1/1)/(1/71) [1 = (1/1)]

x = (1/1)* (71/1)

x = 71.

Hope you're satisfied.

8 0

3 years ago