Answer:
a. 1:4.5, 5. the length is 8. c. first length * 8 = 88. Add lengths = 8+11/12 = 19/12
Step-by-step explanation:
Length=x
width = x+7
Area =length* width =x(x+7)=170
x^2+7x=170
x^2+7x-170=0
-6/7 = -x/84
84/7 = 12
12(-6) = -72
x = -72
So, -6/7 = -72/84 because -72/84 simplifies to -6/7
The given polynomial is:

The first step to factor taking out the GCF is to write each term in prime factored form, so:

The second step is to identify the factors common in all terms, they are: 3xcxd
Finally, factor out the GCF:

The answer is above
your answer would be 78 , hopes this helps