Answer:
(-5,-37)
Step-by-step explanation:
While the standard quadratic form is a x 2 + b x + c = y , the vertex form of a quadratic equation is y = a ( x − h ) 2 + k . In both forms, y is the y -coordinate, x is the x -coordinate, and a is the constant that tells you whether the parabola is facing up ( + a ) or down ( − a ).
Add them to eliminate x terms
x+3y=-7
<u>-x-7y=19 +</u>
0x-4y=12
-4y=12
divide by -4
y=-3
sub back
x+3y=-7
x+3(-3)=-7
x-9=-7
x=2
(x,y)
(2,-3)
The value of is 6.
First, you must add 7 on both sides.
Then, you must divide both sides by 2.
For this case we have the following equations:
f (x) = 2.8x - 12
g (x) = 5.8x + 9
We must equalize the equations.
We have then:
f (x) = g (x)
2.8x - 12 = 5.8x + 9
We clear x:
x (5.8-2.8) = -12 - 9
3x = - 21
x = -21 / 3
x = -7
Answer:
The x-coordinate at the point of intersection for these equations is:
x = -7
Answer:
64
Step-by-step explanation:
SInce the students at the door had to pay twice as much as the students who payed in advance, you would do 32*2=64