Answer:
Step-by-step explanation:
we know that
The area of a circle is
----> equation A
The diameter of a circle is
----> equation B
Solve for r in the equation A
That means ---> isolate the variable r
Divide by 3.14 both sides
take the square root both sides
Rewrite
Substitute the value of r in the equation B
Answer:
(-5, -4)
Step-by-step explanation:
2. 2 increasing
3. Y=-x +9 decreasing
4. 2 increasing
5. 6 increasing
6. Y=-3x+1 decreasing
74.25 minus 38.50 equals 35.75 then do 35.75 divided by 6.50 which is 5.5 so he worked 5 and a half hours