39-27=12 amount of discount.
12/39=0.31
So your answer is going to be A
Answer:
8 possible outcomes
Step-by-step explanation:
there are only 1 of each 8 marbles, so if you only draw one you'll draw one of the eight colors
Answer: 86.34813
Step-by-step explanation:
l= (square root)r^2 + h^2 = (square root)20^2 + 84^2
Step-by-step explanation:
To multiply the fractions, like

Multiply the top,
then multiply the bottom.

Try to use a calculator if you aren't arithmetic heavy, but I suggest you to try to remember them because they are going to be helpful for courses like Algebra, Calculus, Statistics, etc.
To divide fractions, like

You take the top number,

Then you flip the bottom number,

Then multiply the two

And that is your answer. Comment if you need more clarification
Create equations:
10X+15y=2575.
X+Y=210.
Solve for X: X=210-Y, and sub it into the other equation: 10(210-Y)+15Y=2575. Solve for Y: 2,100-10y+15y=2575, 5y=475, y=95.
Sub Y into the original problem: X+95=210. Solve: X=115.
The first mechanic charges $115 per hour and the second charges $95 :)