Answer:
b=4
Step-by-step explanation:
Answer:
-50x^2+30x-4
Step-by-step explanation:
The radius is half the diameter. 19*2=38. The diameter is 38.
Answer:
13
Step-by-step explanation:
Replace the variable x with -2 in the expression.
f (-2) = -3 x -2 -2
Simplify (-3 x -2 -2) + 9
Multiply -3 by -2
6 - 2 + 9
Subtract 2 from 6
4 + 9
add 4 and 9
13.