We need an equation for this, theres no 'formula' for doing this (ignoring the quadratic formula, as that is a long-winded way of factorising a quadratic equation)
-3x - y = -17
4x + 2y = 20
multiply one part of the equation so that we can be able to use the process of elimination.
(-3x - y = -17)2
4x + 2y = 20
Now we have:
-6x -2y = - 34
4x+2y= 20
------------------------
-2x = -14
Divide -2 on both sides.
-2x = -14
/-2 /-2
x = -7.
=============================================
To solve for y, we just have to substitute the value of x to any of the equation given above, that we feel comfortable with. And I'm going to choose this equation: 4x + 2y = 20
4x + 2y = 20
4(-7) + 2y = 20
-28 + 2y = 20
Add 28 on both sides
-28 + 2y = 20
+28 +28
---------------------
2y = 48
/2 /2
y = 24.
The last thing you would do is to check if the answers is correct.
All you have to do is plug in the values of x and y into both equations and see if they equal to one another.
You may have to do this by yourself :P
Anyways, if you have any questions about this topic, feel free to PM me or any other users interested. Thank you for being part of Brainly! Have a nice day!
Answer:
the corresponding sides and angles would be a pair of matching angles or sides that are in the same spot in two different shapes.
Step-by-step explanation:
So look at triangle AWXV and check each side....does side AW correspond with other triangle AX - meaning they are the same?
Repeat to find the same angle in each triangle that matches.
Answer:
True
Step-by-step explanation:
- One way to find the least common multiple of two or more numbers is to first multiply each by 1, 2, 3, etc.
Answer:
5v^2x + 4
Step-by-step explanation:
I'm not sure but i hope this help's
