Answer:
-6
Step-by-step explanation:
1st step is to find the radius, then substitute into the formula for area of a circle

to find the radius, just halve the diameter
Answer:
D
Step-by-step explanation:
2x < 16 - 6x
Bring the variables to one side
2x < 16 - 6x
+6x +6x
8x < 16
Divide both sides by the coefficient
8x/8 < 16?8
x < 2
Answer:
0.8
Step-by-step explanation:
It's right.
Answer:
4x(2x+3)
Step-by-step explanation:
Since the common factor of 8x^2 and 12x is 4x, put that out and separate the distributed remaining factors.