Answer:
Step-by-step explanation:
m = - 5
Answer:
60x
Step-by-step explanation: this would be applying the distributive property
40x+30x-10x
70x-10x
hoped this helped
Answer:

Step-by-step explanation:
Let
be the shaded area and
be the unshaded area, then we know that
(1). 
and
(2).
We solve for
in the first equation and get:

and put this into the second equation and get:




Answer: 7.84 is the answer