Answer:
n=2
Step-by-step explanation:
Answer:
9.5% decrease
Step-by-step explanation:
Let a = x^2 and b=y^2
a-b=7
4a+b=73
4(7+b)+b=73 5b=45 b=9
a=7+b = 7+9 = 16
Then
x^2=16, x=+-4
y^2=9, y=+-3
I think the answer is 7.66666666667 because 1150 ÷ 150 = 7.66666666667
Add: -10y + 10y is 0 so cross it out; left with 14x=-14 divide by 14 on each side u get x=-1 NOW FOR Y: multiply top line by 5 and multiply bottom by 9 u get -100y =-90 now divide by -100 on each side for y
