Answer:
10) 2/3 > 0.6
11) 7% < 7/10
12) 6.5 = 650%
13) 38%, 0.4, 5/8
14) 1/2, 0.55, 57%
Step-by-step explanation:
I changed everything to decimal form to make it easy
10) 2/3 = 0.66
11) 7/10 = 0.7 7% = 0.07
12) 650% = 6.5
13) 5/8 = 0.625 38% = 0.38
14) 1/2 = 0.5 57% = 0.57
Answer:
The area of 3 slices is
or approximate 
Step-by-step explanation:
<em>Find out the area of the cookie cake</em>
The area of the circle (cookie cake) is

we have
----> the radius is half the diameter
substitute


Remember that the area of the complete cookie cake subtends a central angle of 360 degrees
If the cake is divided into 8 slices
then
The central angle of each slice is equal to
360/8=45°
The central angle of 3 slices is equal to
3(45°)=135°
By proportion
Find out the area of 3 slices
Let
x ----> the area of 3 slices

Simplify
----> exact value of the area of 3 slices
Find out the approximate value of the area of 3 slices
assume

substitute

3x + 4y = 12
To find x subtract 4y from both sides
3x = 12 - 4y
Then divide all terms by 3
3x/3 = 12/3 - 4y /3
So, x = 4 - 4/3y