Question

value of v when: Chapter Reference a t=3, s=180
plz help!!!!!

Part 2
In t hours the train has traveled s miles. Find the formula for v, the speed of the train (in mph) in terms of t and s. Find the value of v when:
Chapter Reference

b
t=2.5, s=225

i will give you 20 points!! if you can attach a pic!!

Answer 1

Answer:

a) v = 60 mph

b) v = 90 mph

Step-by-step explanation:

Let the time be t hours and Distance be s miles. Speed = v

We know that, speed =  $\frac{Distance}{Time}$

v =  $\frac{s}{t}$

Now when t =3 and s =180,

we have, v = $\frac{180}{3}$

    v           = 60 mph

When t = 2.5 and s = 225

we have, v = $\frac{225}{2.5}$

                  = $\frac{2250}{25}$

   v           = 90 mph

Answer 2

Answer:

Part 1 .

As per the given statement: In t hours the train has traveled s miles.

Distance of the train = s mile

Time = t hours

Formula for :

Speed of the train(v) = $\frac{\text{Distance of the train}}{\text{Time}}$

or

$v = \frac{s}{t}$ mph           .....[1]

Substitute the value of t = 3 hours and s = 180 miles in [1], to solve for v;

$v = \frac{180}{3} = 60 mph$

Therefore, the speed of the train(v) is, 60 mph

Part 2.

Similarly,

The formula for speed of the train (v) is given by;

$v =\frac{s}{t}$

Substitute the value of t = 2.5 hours and s = 225 miles to solve for v;

$v = \frac{225}{2.5} = 90 mph$

Therefore, the speed of the train(v) is, 90 mph