Find the 21st term of the arithmetic sequence: 18,23,28,

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a