3x - y = 2
y = 2x - 9
Substitute:
3x - 2x - 9 = 2
x - 9 = 2
x = 11
Substitute your answer into any equation:
y = 2x - 9
y = 2(11) - 9
y = 22 - 9
y = 13
Answer:
x = 11 ; y = 13
R; all quadratic functions are going to have *ALL REAL NUMBERS*.
<h3><u>The value of x is equal to -4.076</u></h3><h3><u>The value of y is equal to 5.057</u></h3>
3x + 4y = 8
7x - 8y = -69
<em><u>To make this easier, we can multiply each term in the first equation by 2.</u></em>
6x + 8y = 16
Now, we can use elimination to isolate one variable.
<em><u>Combine equations.</u></em>
13x = -53
<em><u>Divide both sides by 13.</u></em>
x = -4.076
We can plug this value of x into the equation to find the value of y.
3(-4.076) + 4y = 8
-12.228 + 4y = 8
<em><u>Add 12.228 to both sides.</u></em>
<em><u>4y = 20.228</u></em>
Divide both sides by 4.
y = 5.057
The mixture of the water will be 0.11286 I think it is
Answer: 3y-y+6=2y+6
Step-by-step explanation:
3y-y =2y and that leaves only 6 to add on . And your answer is 2y+6