Which is an equation? A. 45/x B. 20x = 200 C. 17 + x D. 90 − x

20x=200

An equation has an equals sign

an expression does not

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

3; 9 is 8 to -4

step-by-step explanation: