Answer:
Step-by-step explanation:
You might see this a bit easier if you change the 5/4 * pi into degrees.
pi/180 = 5/4*pi / x This is the proportion. Change 5/4 into a decimal
pi/180 = 1.25 *pi / x Cross multiply
x * pi = 1.25 pi * 180 Divide by pi
x = 1.25 * 180
x = 225 degrees.
The fraction of the area of the sector is angle/360
The fraction of the area of the sector is 225/360
The fraction of the area area of the sector is 5/8 Reduced.
225: 3*3*5*5
360 = 2*2*2*5*3 *3
Cancel out the common factors
3 * 3 * 5
which leaves 5/8
Two
-3x^2 + 5x - 2 - 2x^2 + 4x + 2
- 5x^2 + 9x (the 2's cancel)
a = - 5
b = 9
c = 0
