Question

Caucule matemática mim ajudaa

Answer 1

C)
- 3/8 : (-9/10)
= 3/8 . 10/9
= 3/9 (:3)/(:3) . 10/8 (:2)/(:2)
= 1/3 . 5/4
= 5/12

D)
(2/3)^3 . 5/7
= 8/27 . 5/7
= 40/189

E)
(1/5)^2 . (2/9)^(-2) . (1/3)^(-4)
= 1/25 . (9/2)^2 . 3^4
= 1/25 . 81/4 . 81
= 6561/100

F)
(2/7)^(-1) . (1/8)^(-2)
= 7/2 . 8^2
= 7/2 . 64
= 64/2 . 7
= 32 . 7
= 224