First divide both sides of the equation by -3, then add 3x to both sides of the equation.
-3x + y = -1
y = 3x + 1
The first third and fourth boxes deserve check marks. Possibly the fifth.
Hello,
x= first number
y= second number
their sum is 56, so:
x+y=56
The first number is 2/5 of the second number, so:
![x= \frac{2}{5}y](https://tex.z-dn.net/?f=x%3D%20%5Cfrac%7B2%7D%7B5%7Dy%20)
Those are the two equations.
The first one -4 hope this helps
Answer:
2,4 and 7 do not form a triangle
Step-by-step explanation:
To form a triangle, knowing the 3 sides, then
The sum of any 2 sides must be greater than the third side
Consider 2, 4, 7
2 + 4 = 6 < 7
2 + 7 = 9 > 4
4 + 7 = 11 > 2
Since 2 + 4 < 7
Then these 3 sides would not form a triangle