Gabe bought 4 books about animals, 2 books about outer space, and 3 books about trains. Each book cost \$5 . How much did Gabe spend on the books?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

(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.