Tammy bought 2CDs that were each the same price. Including sales tax, she paid a total of 25.40. Each CD had a tax of 1.30. What was the price of each and before tax

expression #3 is not equivalent. the others are.

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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