The volume of a sphere is 3,000 m^3. What is the surface area of the sphere to the nearest square meter?

Mathematics

1 answer:

vovangra [49]3 years ago

3 0

Answer:

Step-by-step explanation:

V=4 /3πr3

3000=1 1/3*3.14*r*r*r

3000=4.18666667*r*r*r

716.560509= $r^{3}$

Cube root the number

8.94851471456=r

TSA=4 $\pi$ $r^{2}$

TSA=4*3.14*8.94851471456*8.94851471456

TSA=1006.26

Since we used different numbers for pi and I rounded our answer will be different but the answer is C

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Need help with number 7

tatyana61 [14]

Since she runs 6 $\frac{1}{2}$ miles each day and there 7 days per week, you will have to multiply 6 $\frac{1}{2}$ times 7.

But since you have to use distributive properties, multiply like this (6 $\frac{1}{2}$ )(7)

6 $\frac{1}{2}$ is equal to $\frac{13}{2}$

Now turn 7 into a fraction, so its $\frac{7}{1}$

Now multipy (6 $\frac{1}{2}$ )( $\frac{7}{1}$ )

Multiply the numerators, so its 7 * 13 which gives you 91 and multiply the denominators so its 1 * 2 which gives you 2.

Put that back into a fraction as $\frac{91}{2}$

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3 years ago

Stacy uses a spinner with six equal sections numbered 2, 2, 3, 4, 5, and 6 to play a game. Write a probability model for this ex

allsm [11]

Answer:

We estimate to have 8.33 times the number 6 in 50 trials.

Step-by-step explanation:

Let us consider a success to get a 6. In this case, note that the probability of having a 6 in one spin is 1/6. We can consider the number of 6's in 50 spins to be a binomial random variable. Then, let X to be the number of trials we get a 6 out of 50 trials. Then, we have the following model.

$P(X=k) = \binom{50}{k}(\frac{1}{6})^k(\frac{5}{6})^{50-k}$