<span>Simplifying
y = 3x + -9 + 8x
Reorder the terms:
y = -9 + 3x + 8x
Combine like terms: 3x + 8x = 11x
y = -9 + 11x
Solving
y = -9 + 11x
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Simplifying
y = -9 + 11x</span>
Answer:
<u>The solution of this system of equation is ( 3, - 8)</u>
Step-by-step explanation:
1. Let's solve the system of equations:
First equation:
x + 2y = - 13
x = - 13 - 2y
Second equation:
12x + 5y = -4
12 * (- 13 - 2y) + 5y = - 4 (Replacing x with - 13 - 2y)
-156 -24y + 5y = - 4
-24y + 5y = - 4 + 156 (Like terms)
-19y = 152
y = - 152/19
<u>y = -8</u> (Dividing by 19)
Solving x
x + 2y = -13
x + 2 (- 8 ) = - 13
x - 16 = - 13
x = - 13 + 16
<u>x = 3</u>
2. Proving that x = 3 and y = - 8 are correct:
12x + 5y = -4
12 * 3 + 5 * -8 = -4
36 - 40 = - 4
- 4 = - 4
<u>We proved that x = 3 and y = - 8 are correct</u>
Answer:
I believe its $5492.99
Step-by-step explanation:
First I divided $160 by 3%.
Than I multiplied my answer by 1.03.
Answer:
answers down below :p
Step-by-step explanation:
Let f(x)=0, you'll get x=3 and x=-5, those are the x-intercepts of the function.
