Plz helpWrite an equivalent expression for y+y+y+y

Step-by-step explanation:

you have to add all the coefficient of y

y + y + y+ y = 4y

look a the sides they are perpendicular

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