Answer:
Solution given:
b=9 base side of isosceles triangle
a=
The rate a computer works is 1/time. Working together, you add the rates.
Let new computer be x, old computer be y.
x = y - 7

Rounded to nearest tenth gives:
x = 23 hours
Answer:
I'm not sure exactly what this means, but I think I have an idea.
Fraction form: -1x > -3/2x
Decimal form: -1x > -1.5x
<em>(Again, I'm not completely sure what the question is asking for, but I think I have seen it before.)</em>
The answer is B, 3/4 miles to 1/2 inch which means 1.5 miles to 1 inch, because in the second map, the inches were divided by 2, making the map smaller, therefore we should double the scale to get the same measurments