Question

Please solve from Q.13 to Q.15

Answer 1

Step-by-step explanation:

13)...a)..9^2×12^-4

= 81 × 1/20736

= 0.0039

b)...3^-3÷(-6)^-4

= 1/27÷(-1/1296)

= 1/27× -1296

= -48

15)...let the required no be x

a/q

(1/7)^3÷ x = 1

1/343 × 1/x = 1

1/343x = 1

x = 1/343

Hence the required no is 1/343 by which (1/7)^3 be divided to get 1....

hope it helps you