Answer:
33
Step-by-step explanation:
6
(4×n²) + (4×n¹) + (5×n^0) = 173
4n² + 4n + 5 = 173
4n² + 4n = 168
divide through by 4
n² + n - 42 = 0
n² + 7n - 6n - 42= 0
(n + 7)(n - 6) = 0
n = -7 or 6
but the solution is 6 since base is not negative.
Id
I forget
area of the trapezoid=1/2(7+12)×5
=47.5cm
red balls = 5
blue balls = 5
total balls = 5 blue+5 red
= 10
24/5
5x : 9
(8 : 3)×3
24 : 9
5x = 24
x = 24/5 = 4/4/5
