A composite figure has three congruent triangles removed from it.
8 ft
8 ft
16 ft
16 ft
What is the area of the shaded region?

95 ft^2
128 ft^2
160ft^2
192ft^2

n

step-by-step explanation:

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!

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6