Add the equations.
x-y%2B0.5x%2By=7%2B5
1.5x=12
highlight%28x=8%29
Now use either equation to solve for y.
8-y=7
highlight%28y=1%29
x=8
y=1
Answer:
1) 18
2) 6
3) 12
4) 12
5) 7
6) 9
Step-by-step explanation:
1) 2*x = 6^2, 2x=36, x = 18
2) 2*(x+2) = 4^2, 2x+4 = 16, x = 6
3) 10^2 = 5 * (x+8), 100 = 5*(x+8), x = 12
4) The altitude is 4sqrt3 using pythagorean, (4sqrt3)^2 = 4*x, 48 = 4*x, x=12
5) Altitude is sqrt63 using pythagorean, (sqrt63)^2 = 9x, x = 7
6) Altitude is sqrt72, sqrt(72+9) = 9
It would be a decrease. If it were 25 to 75 it would be an increase. But, sine it is 75 to 25 the answer would be decrease.
Answer:
x<7
Step-by-step explanation: