Answer:
x = -3
In-Depth Steps:
1.) Start with the bottom equation: 
2.) Set
alone on one side of the equal sign. Your equation will look like
.
3.) Plug
in for
in the first equation. You will get
.
4.) Distribute. Your equation now looks like this:
.
5.) Combine like terms. You will get
.
6.) Subtract 6 from both sides. You get
. We can learn that Y=0.
7.) Go back to either equation and put 0 in for y.
8.) In the top equation, it would look like
and the bottom equation would look like
. We basically got our answer of
, but we will plug it into the
equation, and in-fact, we get x = -3.
there are 8 letters
2/8 to get i on the first draw
1/7 to get i on the second draw (no replacement)
2/8 * 1/7 = 2/56
1/28
The probability is 1/28
Boys : Girls = 2:7
let the no. of boys be x
so no of girls = 250+x
so, x:(250+x) = 2:7
x/(250+x) = 2/7
7x = 500+2x
7x-2x = 500
x = 500/5 =100
Answer: 
Step-by-step explanation:
Given
Line passes through 
Equation of line when it passes through two points 

Insert the values