Answer:
4
Step-by-step explanation:
from 13 to 15 you added two more so you have to do 8 divided by 2 which is 4
Answer:
D
Step-by-step explanation:
so we know that x + y is greater than or equal to 5 + 2 which is 7.
we also know that y is greater than 2.
therefore our answer cannot be A, E, or F.
now that we know that x + y is greater than or equal to 7, since y is greater than 2, x is less than 5, because 2 + 5 = 7.
that means our answer cannot be C.
the only two answers left are D and E.
if our answer was D, then we would have 3 + 6 is greater than or equal to 7.
this is true, so one of our answers is D.
if our answer was E, then we would have 2 - 5 is greater than or equal to 7.
this is untrue, so our answer is not E.
therefore our answer is D
Answer:
Maybe you should refresh your page if you can.
Answer:
Option B 
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The perimeter of the figure is equal to sum the length of semicircle plus the length of three sides of a square
<u>Find the length of semicircle</u>
Remember that the circumference of semicircle is equal to

we have

substitute

The perimeter of the figure is equal to

A = 210 + 20(h - 7) <== ur equation
if she earns 410 tutoring...
410 = 210 + 20(h - 7)
410 = 210 + 20h - 140
410 = 20h + 70
410 - 70 = 20h
340 = 20h
340/20 = h
17 = h <=== she spent 17 hrs tutoring