M midpoint of CD, given
MD = 3, given
MD = CM, def. of midpoint
CM = 3, substitution
To do this, add the equations together like this,
3x + 4y = 2 plus
4x - 4y = 12
-x = 14
Multiply the negative sign to both sides because the x cannot be a negative.
x = -14
Now plug in -14 for a x value in one equation, like this to get the y value:
3(-14) + 4y = 2
-42 + 4y = 2
Add 42
4y = 44
y = 11
Your x and y values are:
x = -14
y = 11
Answer:
37< 10x-7
Step-by-step explanation:
Answer:
43 unit²
Step-by-step explanation:
Sorry for the bad handwriting ;-;
Answer: (1,3)
Step-by-step explanation:
Let's solve this <u>system of equations</u> by elimination. We will multiply one or both equations such that when we combine the equations, one of the variables will completely cancel out.
Let's multiply the whole first equation by -2 to achieve this:
now becomes 
Now let's add both equations



Since we got y into a form we can solve it for, lets divide both sides by -5 to isolate it.


Now that we have the value of y, we can substitute it into any equation to solve for x. Only if we have both x and y can we make an ordered pair. Let's use the second equation and substitute 3 for y.

We can now solve for x.
<em>[Adding 3 to both sides]</em>
<em />
<em>[Dividing by 2 on both sides]</em>
We now have both x and y, so we can put it in an ordered pair to answer the question.
