In a pair of complementary angles, the measure of the larger angle is twice that of the smaller angle. What is the measure of the larger angle?
A 30°
B 60°
C 90°
D 120°

D. 120°

Step-by-step explanation:

Complementary angles have a sum of 180 and since its twice the measure of the smaller one so the smaller one would have to be 60 in order for the bigger one to be 120 because you then add your two angles and it should make 180

Step-by-step explanation:

Supplementary angles sum to 90. We are told the larger angle is twice the smaller.

L=2S, S=L/2

S+L=90, using S=L/2 we have

L/2+L=90

(3L)/2=90

3L=180

L=60

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!