I need help on number 2 please and thank you I appreciate it

44 degrees

Step-by-step explanation:

To start things off, we need to understand that all three triangles enclosed within the rectangle are identical, or better still, in this case, we can say that they are exactly the same.

This implies that the dimensions for the first triangle are the same as that f the second and the third.

we have the dimensions of the first triangle as 92 degrees, 44 degrees, and < DGA.

Recall that the sum of the angles in a triangle = 180 degrees.

< DGA = 180 - (92 + 44) = 44 degrees.

since the triangles are identical, < EHB = < DGA. = 44 degrees

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!