I am just guessing but you might try A
Answer:
r = -3
Step-by-step explanation:
Add the like terms: 8r = -24
Isolate r by dividing each side by 8: r = -24/8
Simplify: r = -3
Hope this helps
20t^2+9t-20 is the answer
Answer:To find the area of a circle with the radius, square the radius, or multiply it by itself. Then, multiply the squared radius by pi, or 3.14, to get the area. To find the area with the diameter, simply divide the diameter by 2, plug it into the radius formula, and solve as before
Step-by-step explanation:
Answer: I got C) 12 . . . . .