Jill calculates that the distance between London and Manchester, England, is about 280,000 meters. If she drives at a rate of 80 kilometers per hour, how long will it take Jill to drive from London to Manchester?

It will take Jill 3  hours  to drive from London to Manchester

Step-by-step explanation:

From the question above, what we are asks to find is the time taken for Jill to drive from London to Manchester.

To calculate the time taken, we simply need to use the formula;

V =

where v = speed or velocity

d = distance

t=time taken

From the question, d=280,000 meters

                               v = 80 kilometers per hour

                                t= ?

First we need to change 280, 000 meters to kilometers.

1 kilometer = 1000 meter

 x                 = 280, 000 meter

cross-multiply

1000 x = 280 000

Divide both-side of the equation by 1000

=

x = 280 kilometers

d =280 kilometers

We can now proceed to insert our values into the formula;

V =

80 =

cross-multiply

80 t = 280

Divide both-side of the equation by 80

 =  

t = 3  hours  or    3 hours 30 minutes

It will take Jill 3  hours  to drive from London to Manchester

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204