Question

РЕШИТЕ ПЛИЗ ДАЮ 30 Б!!! ЗАРАНЕЕ СПАСИБО.

Answer 1

Ответ:

1)R:P :Q=3:7:5

R=3x

P=7x

Q=5x

R+P+Q=180°

3x+7x+5x=180°

15x=180°

x= 12°

R= 3×12=36°

P= 7x12=84°

Q= 5x12=60°

2)

A : C = 2:5

A, C - ?

A = 2x

C = 5x

A + C = 180° - 40°

2x + 5x = 140°

7x=140°

X=20°

A= 2×20=40°

C= 5×20=100°