3x +y = 23 this is the same as y=23-3x
3x - 2y = 8 this is the same as 3x/2-8/2=y, which gives you; y=1,5x-4
so;y=23-3xy=1,5x-4
y=y
23-3x=1,5x-4
23+4=1,5x+3x
27=4,5x
27/4,5=x
x=6
the y is:
3*6+y=23
18+y=23
y=23-18
<span>y=5</span>
Family of 3 so
3 x4.89= 14.67
3x5= 15.00
3x8.49=25.47
25.47+14.67+15.00= 55.15
The budget was 60$
So they actually had enough you were not correct.
Answer:
I think f(1) = is 14,000
Step-by-step explanation:
f(1) = 14,000 should be right but thats about all I know. Sorry.
Answer:
y= -1 and x = 10
Step-by-step explanation:
(1) x+3y=7
(2) 2x-4y=24
Clear x from the 1st equation: x=7-3y
And replace x from the 2do one: 2(7-3y)-4y=24
14-6y-4y=24
-6y-4y=24-14
-10y=10
y=-10/10
y=-1
Now we have y=-1, let's finde x:
x=7-3y
x=7-3(-1)
x=7+3
x=10
