Tinley is training to run a half-marathon. she sets a pace so that every mile takes 77 minutes. write an equation for the amount of time, tt, it takes tinley to run mm miles.

An equation for the amount of time t , it take Tinley to run m miles is ,

Step-by-step explanation:

Using distance formula:

From the given information:

She sets a pace so that every mile takes 7 minutes

⇒

To find an equation for the amount of time t, it takes Tinley to run m miles.

Using above formula:

Substitute the given values we have;

Multiply 7 both sides we have;

Therefore, an equation for the amount of time t , it take Tinley to run m miles is ,

554.4

step-by-step explanation:

44*12.6=544.4

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this