Triangle mid-segment ???

22

Step-by-step explanation:

The midsegment is always half as long as the base, so

2(6 + 4x) = 5x + 24

12 + 8x = 5x + 24

3x = 12

x = 4

Replace the 4 in for x,

6 + 4(4) = 22

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!

table a is wierd

step-by-step explanation:

6*f