Where did the formula of sphere comes from

Which expression is equivalent to - 6 (3x - 2/3) ? -2x + 9 -3x - 6 2/3 -18x+12 -18x+4 The 6 2/3 is a mixed number btw

Multistep sandy charges each family that she babysits a flat fee of $10 for the night and an extra $5 per child.

7 is what percent of 56?

After some food is introduced into a petri dish containing bacteria, the number of bacteria in the dish increases rapidly.

Circle D is shown with the measures of the minor arcs. Which angles are congruent? ∠EDH and ∠FDG ∠FDE and ∠GDH ∠GDH and ∠EDH ∠GDF and ∠HDG its d

If you were on the moon, your weight would only be 0.17 of your weight on Earth. If you weigh 195.75 pounds on Earth, how much would you weigh on the moon?

Find the center, vertices, and foci of the ellipse with equation x^2/100+y^2/64 = 1.

The first person has $15 and saves $1.50 each day. The second person has $55 and spends $4.50 each day. In about how many days will they have the same amount of money? a 7 days b 15 days c 21 days d 12 days

Ten students participated in a raffle to win a computer. There are two new computers being given away and two students will be chosen at random one at a time without replacement. How many possible ways are there to choose the two students?

A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the contents (i. e., of the population) is 0.22 ounces. In this problem the 0.22 is Select one: a. a parameter. b.