41% B
The diagram shows a semi-circle inside a rectangle
of length 150 m.
The semi-circle touches the rectangle at A, B and C.
Calculate the PERIMETER of the shaded region.
Give your answer correct to 3 significant figures.
150 m

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!

the first domain and range set to the left is matched with the top relation, and the second set the set in the middle goes with the bottom relation.

there were only 2 presidents that were under the age of 45. theodore roosevelt, and jfk, that makes 5%

answer is b 270°

i got it down for you chief.