What is the slope of a line perpendicular to the line whose equation is x – 3y = –18. Fully reduce your answer.

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!

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation:

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64