Answer:
4x +5y = 10
Step-by-step explanation:
Standard form of an equation is Ax +By = C
y=-4/5x+2
Add 4/5 x to each side
4/5 x +y=-4/5x+ 4/5x+2
4/5 x + y = 2
Now we don't have fractions in A ,B or C
So Multiply by 5
5(4/5 x + y) = 2*5
Distribute
4x +5y = 10
9 - (-3)^2 / 4(7) -9
9 - (9)/ 28 - 9
0/21
0/21 = 0
hope this helps
Step-by-step explanation:

Answer:
24 inches
Step-by-step explanation:
The perimeter would be 2l + 2w
2(5) + 2(7)
24 inches
Yi left a factor of 63, that is 21.
So the GCF will be 21