Which of the following equations represents the axis of symmetry for the parabola shown? y = 10x x = 10 x = y + 10 y = x + 10

x = 10

Step-by-step explanation:

The axis of symmetry is the vertical line that passes through the vertex.  We can readily see that the x-coordinate of the vertex is 10.

Therefore, the axis of symmetry here is x = 10.

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.