Find a formula for the n th term, T n , of the following arithmetic sequence: 13 , 17 , 21 , 25 , . . . Hence, or otherwise, find the value of the 40th term, T 40 .

Step-by-step explanation:

17-13=4 and 21-17=4 and 25-21=4  so d=4

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

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1