Quick
justin's gas tank is 1/6 full. after he buys 7 gallons of gas, it is 1/2 full. how many gallons can justin's tank hold?

Rewrite the fractions so they have a common denominator:

1/2 = 3/6

The tank was at 1/6 so:

3/6 - 1/6 = 2/6 simplifies to 1/3 of gas was added by the 7 gallons

There are three 1/3's to a whole ( full tank).

7 x 3 = 21

The gas tank can hold 21 gallons.

step-by-step explanation:

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere