Simultaneous Equations
3x + y = 4
5x - y = 22
The signs of the matching values aren't the same so we add the rest of the equations.
8x = 26
Divide both sides by 8 to get x = 3.25
Now substitute back into the first equation.
(3 x 3.25) + y = 4
9.75 + y = 4
Subtract 9.75 from both sides
y = -5.75
Answer:
y = (x - 6)(x + 1)
Step-by-step explanation:
Use factored form, y = a(x - r1)(x - r2), where r1 and r2 are roots.
Since the solutions are 6 and -1, plug in these numbers:
y = (x - 6)(x + 1)
So, the factored equation is y = (x - 6)(x + 1)
Answer:
x = -2
Step-by-step explanation:
-6x -2x = 16
Combine like terms
-8x = 16
Divide each side by -8
-8x/-8 = 16/-8
x = -2
First of all, subtract the amount the boots costed from the total price.
109.95-29.99
= 79.96
Now you have the price of the 4 sandals.
To find the price of 1 pair, divide this total by 4
79.96 / 4
= 19.99 $ for one pair of sandals!
