Answer for 7th grade pre alergerbra pg 146, question 27 b

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a soil b 5 9 5 2 1 1 6 3 9 5 1 0 7 0 2 3 6 7 8 2 1 8 3 0 9 key: 9|6 means 69 key: 5|8 means 58 calculate the mean of each data set. calculate the mean absolute deviation (mad) of each data set. which set is more variable? how do you know?