Answer:
The radius of the circle is 
Step-by-step explanation:
we know that
The circumference of a circle is equal to

we have

assume

substitute and solve for r



Answer:
9. answer: -3, 10. answer: 5
I like to change all the subtraction to addition of the negative.
4x^2 + 8x + (-11x) + 6 + (-5x^2) + 2
Now combine the like terms.
-x^2 -3x + 8
Your answer is A: -x^2 - 3x + 8
Identity Property of Addition
0 + x = x is the identity property of addition
Answer:
b
Step-by-step explanation: