Y =x+4/9
9 (y=x+4/9)
9y=9x+4
9y-9y=9x-9y+4
0=9x-9y+4
0-4=9x-9y+4-4
-4=9x-9y
Standard form: 9x-9y=-4
First solve the second equation to equal x.
x + y = 550
Subtract y from both sides.
x = 550 - y
Put this into the first equation in place of x.
3.75 (550 - y) + 4y = 2160
Multiply everything in the parenthesis by 3.75
2062.5 - 3.75y + 4y = 2160
Combine like terms.
2062.5 + 0.25y = 2160
Subtract 2062.5 from both sides.
0.25y = 97.5
Divide 0.25 on both sides.
y = 390
Put this into the second equation in place of y.
x + 390 = 550
Subtract 390 from both sides.
x = 160
So x = 160 and y = 390
Hope this helps!
Answer:
11
Step-by-step explanation:
duh add 1 and 1 merge it together to get 11
Any equation that has a slope of 1/2. The equation has to be equivalent to y=1/2x-3 so, you can use the equation y=1/2x+4 (for example)
Answer:
C
Step-by-step explanation:
