Please help! The idea of a rigid motions is a significant concept in geometry.
Explain what a rigid motion is and why it is important. Using the diagram below identify the specific rigid motions used for the following shapes.

so, converting firstly the mixed fractions to improper fractions and then "adding".

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!

can you make your screen more see able?

then i might be able to .