we have
------> equation 
------> equation 
Multiply by
the equation 
------> equation 
Sum equation
and equation 

Substitute the value of x in the equation 

therefore
the answer is the option B

Answer:
36 hours
Step-by-step explanation:
20+16= 36
0+6=6
10+20=30
Answer:
-65
Step-by-step explanation:
i did it and looked it up
Answer:
<u>hope it helps...</u>
<u>have a great day!!</u>
Lets say pi is 3.14
The area of a circle is: pi*radius squared
The radius is half the diameter so it is 5 inches.
3.14*5 squared 2
3.14*25
78.5inches squared