Answer:
(-1,-18) is the coordinate of the vertex.
Step-by-step explanation:
We can obtain the vertex by taking the derivative and equating it to zero. I know this because the the slope of the tangent line at the vertex has to be equal to zero.
the derivative would be 4x + 4 = 0, where x = -1.
Plugging x into the original value we will end up with the y coordinate.
Hope this helps.
Let's get the data out of the problem:
d = 38.4 km
t = 6 h
Now, we can apply in this equation and find his speed:
v = d / t
v = 38.4 / 6
v = 6.4 km/h
Joe has a speed of 6.4 km/h.
Hope it helps.
Answer:
Step-by-step explanation:
x^2 - 14x + 45
(x - 9)(x - 5)
Answer:
use rise over run! this means "rise" (being the change in y, going up or down) divided by the "run" (being the change in x, going from left to the right).
Step-by-step explanation:
