More than half of the class has a combination of which hair colors? a. brown or blonde
b. red or brown
c. black or brunette
d. blonde or black

The answer would be blonde and black.

Step-by-step explanation:

This would be because on the chart they are shown as the mayority of the class.

two data sets with the same median will not have the same varaibility

step-by-step explanation:

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!