Answer:
First you do what is inside the parentheses. 10 x 5 - 3. 50 - 3 =47. Then you multiply 47 x 5 = 235.
Step-by-step explanation:
Answer:
4,992 meters of fence
Step-by-step explanation:
Answer: 
Step-by-step explanation:
I hope you mean y = x² - 12 and not y = 2x - 12.
You switch the y and x variables:
x = y² - 12
And solve for y:
x + 12 = y²

Answer:
x = 100
Step-by-step explanation:
Answer:
81.68
Step-by-step explanation:
The radius is half the diameter so the radius is 13. 13 times pi times 2 equals 81.68.