Sum of first p terms of an ap is 0 , if 'a' is the first term , prove that the sum of next q terms is -aq(p+q)/p-1, p is not equal to 0

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left