Help me fast. Tysm please

704 cm

Step-by-step explanation:

The two triangles are 8x12=96 and since there are two triangles 96x2=192.

Next you do the top and bottom rectangles 10x16=160 and the two rectangles are the same size so 160x2=320.

Now you do the middle rectangle 16x12=192.

Now you add all the areas together 192+320=512+192=704cm.

So the answer is 704 cm!

answer: huh

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!