The hypotenuse of a 45°-45°-90° triangle measures units.

what is the length of one leg of the triangle?

7 units
units
14 units
units

lets assume length of leg is x

then apply Pythagoras theorem

7^{2}\dotplus x^{2}= 14^{2}

14^{2}-7^{2}=x^{2}

\sqrt{14^{2}-7^{2}}=x

12.12=x

Step-by-step explanation:

IN THIS WE USE Pythagoras theorem

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!

answer: 0.26

i used the calculator on google