Answer:
y = 0
Step-by-step explanation:
-4y - 19 = -19
add 19 to both sides:
-4y = 0
divide both sides by -4:
y = 0
Squares sides are equal so just do 32 divided by 4 so the length of each side of the tile is 8
if i was i your class or in bigger class i will help you
Answer:
y=3 and x=0
Step-by-step explanation:
3x−3y=−9. i'm going to solve for x.
3x−3y<em>+3y</em>=−9<em>+3y</em>
3x=3y−9
3x/3=(3y-9)/3 to isolate x we have to divide everything by 3
x=y−3
so now that we have x we can substitute it in 4x+4y=12
4(y-3)+4y=12
4y-12+4y=12
8y-12=12
8y-12<em>+12</em>=12<em>+12</em>
8y=24
8y/8=24/8
y=3
we have y which equals 3, so now we can substitute it into any equation so solve for x again.
3x – 3y = -9
3x-3(3)=-9
3x-9=-9
3x-9+9=-9+9
3x=0
3x/3=0/3
x=0
so, final answers are y=3 and x=0
checking our work:
3(0)-3(3)=-9
0-9=-9
-9=-9 true
4(0)+4(3)=12
0+12=12
12=12 true
Answer:
165 cm.
Step-by-step explanation:
Let h be the height of Cody on the first day of school last year.
We have been given that Cody was 165 cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.
To find the height of Cody on the first day of school last year, we need to find h such that h plus 10% of h equals 165. We can represent this information in an equation as:
Let us divide both sides of our equation by 1.10.
Therefore, Cody was 150 cm tall on the first day of school last year.
