4x2+28x+49=0(2x+7)(2x+7)=0
2x+7=0 or 2x+7=0
x=
6 times 5 = 30
8 times 2 = 16
You've earned 46 points possible
One way to solve the rest is to set up a proportion
46/x = 92/100
x= 50 points
Answer:
75.39 in^2
Step-by-step explanation:
circumference=2πr
30.8=2(3.14)r
30.8=6.28r
4.9=r
Now that we know the radius, we can plug it in for the area equation
area=πr^2
area=(3.14)(4.9)^2
area=(3.14)(24.01)
area=75.39 in^2
To solve this we are going to use the formula for the area of a circle:
where
is the area of the circle
is the diameter of the circle
We know from our problem that the area of our circle is 10 inches long, so
. Lets replace that value in our formula to find
:
We can conclude that the correct answer is: 78.54 square inches, or in centimeters: 506.7 square cm.
Answer:
D
Step-by-step explanation:
When you do a power to a power you multiply
4 * 2/9 = 8/9