Answer:
Step-by-step explanation:
1) y = 2x ----------(I)
x + y = 6 -----------(II)
Plug in y =2x in equation (II)
x + 2x = 6 {Add like terms}
3x = 6
x = 6/3
x = 2
Plugin x = 2 in (I)
y = 2*2
y = 4
<u>Check: </u>
LHS = x +y
= 2 + 4
= 6 = RHS
2)5x + 10y = 3 ------------(I)
x = (-1/2) y ------------(II)
Substitute x = (-1/2)y in (I)
Substitute y = (2/5) in equation (II)
<u>Check:</u>
Substitute x and y value in equation (I)
3) y - x = 3x + 2
y = 3x + 2 + x
y = 4x + 2 ---------------(I)
2x + 2y = 14 - y
2x + 2y +y = 14
2x + 3y = 14 ------------------(II)
Substitute y = 4x + 2 in equation (II)
2x + 3(4x +2) = 14
2x + 3*4x + 3*2 = 14
2x + 12x + 6 = 14
14x + 6 = 14
14x = 14 - 6
14x = 8
x = 8/14
x = 4/7
Substitute 'x' value in (I)
<u>Check:</u>
<u /><u />
4x - 1 = -4x + 1
8x - 1 = 1 (added 4x to both sides)
8x = 2 (added 1 to both sides)
x =
Answer: there is ONE solution
It’s 1.875
Hope this helps!
If you look at the graph, you can see that at 5 packages, 2 stops have been made. Look at the image I have attached for additional help if you need it.
Hello,
Here is your answer:
The proper answer to this question is option D "<span>(4,8)".
Your answer is D.
If you need anymore help feel free to ask me!
Hope this helps!</span>