Answer:
two
Step-by-step explanation:
First, we have to make one of the x's have the same coefficient so they can cancel each other out (or eliminate)
3(x+y) = 3(2)
you're going to have to do it to both sides to keep it balanced
3x+3y=6
now line them up and add them
3x+3y= 6
+ (-3x+4y=15)
since the 3x and -3x add up to 0x and cancels each other, you're left with
7y = 21
divide both sides by 7
y=3
plug in the y into one of the original equations
x+y=2
x + 3 = 2
subtract 3 from both sides
x = -1
x = -1 , y = 3
Answer:
750 m
Step-by-step explanation:
Theorem:
In a triangle, a segment whose endpoints are the midpoints of two sides is parallel and half the length of the third side.
In triangle LMN, segment DF has endpoints which are midpoints of sides LM and MN. That makes segment DF parallel to side LN and half the length of LN.
The shortest path from point D to point N is segments DF and FN.
Point F is the midpoint of segment MN.
MN = 800 m
FN = (1/2)MN = (1/2)(800 m) = 400 m
From the theorem,
DF = (1/2)LN
DF = (1/2)(700 m) = 350 m
shortest path = DF + FN = 350 m + 400 m = 750 m
Answer: 750 m
Answer:
15 months
Step-by-step explanation:
y represents the total cost in the equation. The words per month tells you that is where the x will go. 75 doesn't change you have to pay it no matter what so it will not have the x with it.
y = 15x + 75
To solve, plugin 300 for y, then solve for x.
300 = 15x + 75
300 - 75 = 15x + 75 - 75
225 = 15x
225/15 = 15x/15
x = 15 months
Answer:
I’m too lazy so just look at the picture.
Step-by-step explanation: