Answer:
C. 10–15, 15–20, 20–25, 25–30, 30–35
Step-by-step explanation:
A = 180(n - 2)
a = 180n - 180*2
a = 180n - 360
180n - 360 = a
180n = a + 360
n = (a + 360) / 180
Numerator for fraction above = ( a + 360), denominator = 180
0.9 as a fraction is:

What place is the '9' in? It's in the tenth place.
0.9 can be said as

Nine

tenths

=
yellow car = x
white cars = 9x ( 9 times as many white cars)
9x +x = 40
10x = 40
x = 40/10 =4
4 yellow cars
9*4 = 36 white cars
(4w-7)(4w-7) .
You need to find a multiplication that gives you 49 but at the same time when you add them it need to give you -56