We start qt 72 degrees,
3 1/5 = 16/5 = 3.2 x 10 minutes = 32 degrees.
72 + 32 = 104 degrees.
Cool Time:
4 2/7 = 30/7 = 4.28571429 x 7 minutes = 30 degrees.
104 - 30 = 74
So we went from 72 to 74 degrees, that is a 2 degree difference.
This is what i got, i hope i understood the question correctly.v
Perimeter is the length of the lines around the shape, just add up all those numbers to get it
We have that
<span>a*(3x-8)=b-18x
3ax-8a=18x+b
</span><span>The only way for this to happen (non-trivially) is if the coefficients of x are equal, and the constant terms are equal
</span>so
3ax=18x-----> 3a=18--------> a=6
-8a=b---------> b=-8*6-------> b=-48
the answer is
a=6
b=-48
