Answer:
x=7
Step-by-step explanation:
The two triangles are congruent so the equation is
9x-15=7x-1
9x-7x=15-1
2x=14
x=7
Answer: 2/5 is closer 1/2. and it is easy to find half of 7 mentally. Half of 7 is 3.5, so Martin gave away about 3.5 pounds away.
Answer
The distance is 13.4164078649987
$332.64
20% of 415.80 is 83.16
415.8-83.16=$332.64
To solve for r, you just need to isolate r. To do that, divide by h and π on both sides:

Then, square root both sides to get rid of the 'squared':

Or, if you wanted the answer in terms of π, then just don't divide by it, just divide by h and then square root it.