The probability that a battery will last 10 hr or more is 0.9, and the probability that it will last 15 hr or more is 0.11. given that a battery has lasted 10 hr, find the probability that it will last 15 hr or more.

What value of x is in the solution set of 4x – 12 s 16 + 8x?

How do i multiply two digit numbers

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.