Answer: hay 16 vagones de pasajeros y 48 de carga
Step-by-step explanation:
Slope of the vertical line: undefined
Equation of the vertical line: x=5
f(x)+g(x) = 3x^2-x-4
f(x)-g(x) = 4x^2-7x-4
Foil (2x-6)(5x+1) = 10x^2-28x-6
The roots (zeros) of the parabola are -2 and 3
X-coord for vertex = -1/2
Last problem: s^2 + 4s
Answer:
40 and 28
Step-by-step explanation:
We have two unknown numbers, so let's call them x and y for now.
We know the sum of the two numbers is 68, and the difference is 12, so let's substitute those two numbers for x and y:
x+y=68
and
x-y=12
Because both of these systems are true, we can take both these equations and combine them, by adding each side of one equation with the corresponding side of the other.
So we have:
(x+y)+(x-y)=(68)+(12)
2x=80
x=40
Now we know one of the numbers, x, is equal to 40, so now we can plug that number back into one of the two original equations, x+y=68 or x-y=12. I'll choose x-y=12.
After plugging in x, we get:
40-y=12
-y=-28
y=28
So now we have figured out x and y, which are 40 and 28.
It’s neither cuz it has a positive slope of 3/5
