The side-by-side dotplot below displays the arm spans, in centimeters, for two classes. Which statement is NOT true?

The mean arm span appears to be similar for the two classes.
The arm spans for Class A have less variability than the arm spans for Class B.
The arm spans for Class B have more variability than the arm spans for Class A.
The arm spans for Class A are roughly symmetric, while those for Class B are skewed left.

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation:

the anwser is d) 75°

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!