Answer:
405
Step-by-step explanation:
Answer:
y = a
+ b x + c .
Step-by-step explanation:
Also (How to do it!):
We can find the vertex of a quadratic equation with these steps:
Get the equation in the form y = ax2 + bx + c.
Calculate -b / 2a. This is the x-coordinate of the vertex.
To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.
The answer is -8 your welcome
To find out the cyclist's average speed you simply have to divide 50.0km
by 2.5 to find the answer. Therefore the cyclist's average speed is
20.0 km an hour.
Answer:
Step-by-step explanation:
rewrite each equation
1) 2x+12y=68
2)8x-12y=-28
because the y values are the same number but opposite signs they will cancel out nicely.
10x=40
x=4
now lets plug x into any of the equations.
2(4)+12y=68
12y=60
y=5
(4,5)