(1/5) (-5/7) (3/4): i need an answer with an explanation as to why you got this answer.

multiply the tops and bottoms, so:

1 * -5 * 3 = -15 for top

and

5 * 7 * 4 = 140 for bottom

then reduce by dividing by 5, and you get:

-3/28

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