What is the y value in the solution to this system of linear equations?
1 answer:
Answer:
The y-value is -20
Step-by-step explanation:
So let's solve this by Elimination method;
-2(4x + 5y = -12)
4(2x + 3y = -16)
Let's Distribute;
-8x - 10y = 24
8x + 12y = -64
So x cancels out because -8 + 8 = 0
-10y + 12y = 2y
24 - 64 = -40
2y = -40
Divide both sides by 2;
y = -20
Now lets plug in y to find the value of x;
4x + 5(-20) = -12
4x - 100 = -12
Add 100 to both sides;
4x = 88
Divide both sides by 4;
x = 22
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Measures of center for numbers summarizes it in one number.
measures of variation how its values vary with a single number.
This is how we were asked to do it. Different teachers ask for different reasons . Hope this helps!
The answer is 5 because each quarter of an hour is 1 1/4 and 1 1/4 x 4 = 5
X=11
-5(x+1) = -3(2x-2)
distribute
-5x-5= -6x+6
both +6x
x-5=6
plus 5 on both
x=11
