Which applies the power of a power rule properly to simplify the expression (710)5? (710)5= 710 ÷ 5 = 72
(710)5= 710 - 5 = 75
(710)5= 710 + 5 = 715
(710)5= 710 · 5 = 750

step-by-step explanation:

this is not a question

yes

step-by-step explanation:

yes

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.