Answer:
if x=2, y= 1
if x=5, y=-5
Step-by-step explanation:
6x+3y=15
3y=-6x+15
y=-2x+5
y=-2(2)+5
y=-4+5
y=1
y=-2(5)+5
y=-10+5
y=-5
Answer:
. the area decreased by 7 is 14
The height is 5 cm
Explanation:
The formula for volume is v = lwh. (L is length, w is width, and h is height." Since we know the volume, the length, and the width, we can substitute those numbers in.
240 = (12)(4)h
Now we will solve this equation
1) Simplify the right side : multiply 4 x 12
240 = 48h
2) Since we want one h instead of 48, we divide 48 by both sides of the equation
240/48 = 48h/48
5 = h
Therefore, the height is 5 cm
-5x divided by -5x to cancel the out the x and then 30 divided by -5, hope this helped!
Step-by-step explanation: