How do you solve the question? ryan gave 7 of his cars to a friend. then he bought 6 more cars. now ryan has 13 cars. how many cars did ryan start with?

14 cars

Step-by-step explanation: x-7+6=13

X-1=13, x=14

answer: 20

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