A train travels 24 miles in 30 minutes. Calculate it's speed in mph

Mathematics

2 answers:

Ivahew [28]3 years ago

4 0

48 miles per hour! Just double 30 minutes to get an hour, and double 24 as well which equals 48.

bagirrra123 [75]3 years ago

4 0

48 mph!! That was a very easy one but I liked it very much

You might be interested in

A car manufacturer sold about 332,000 cars last year. The number of cars

Viefleur [7K]

Answer:

415,000

Step-by-step explanation:

First, find the decimal equivalent of 125%. To do this, divide 125 by 100 or move two decimal places to the right: 125/100 = 1.25

Now multiply the amount of cars sold last year, 332,000, by the percentage decimal, 1.25: 332,000 x 1.25 = 415,000

The car manufacturer sold 415,000 cars this year

4 0

4 years ago

What is the answer?

Tresset [83]

The standard eqn of a parabola in vertex form is y-k = a(x-h)^2, where (h,k) is the vertex. There are a good number of steps involved. I don't think it wise not to "show work." I cannot answer this question without going through all those steps.

However, there's an easier way to find the vertex. Identify the coefficients a, b and c:

a= -4, b= -3 and c = 1

Then the x-coord. of the vertex is x = -b / (2a). Subst. -3 for b and -4 for a and simplify. x = ??

Then find the y-coord. of the vertex by subbing your result, above, into the original equation.

Write the vertex as (h,k).

Once you have this vertex, you can find the equation in vertex form as follows:

Start with the general form y-k = a(x-h)^2, where (h,k) is the vertex.

You've already found the vertex (h,k). Subst. h and k into the general form, above. Then only the coefficient "a" remains undefined.

5 0

3 years ago

Tia is investing $2500 that she would like to grow to $6000 in 10 years. At what annual interest rate, compounded quarterly, mus

timurjin [86]

To find the required interest rate, you need to solve the following equation for r:
$6000=2500(1+ \frac{r}{4} )^{40}$

7 0

3 years ago

Calculate the scale factor

Bezzdna [24]

Answer:

Yeet

Step-by-step explanation:yeet

3 0

3 years ago

Read 2 more answers

Kate currently has an account balance of $7,194.66. She opened the account 21 years ago with a deposit of $2,978.41. If the inte

jolli1 [7]

Use the attached formula.
exp = [log (total / principal) / n*years]
where "n" is compounding periods per year
exp = [log (7,194.66 / 2,978.41) / (365*21)
exp = log ( 2.4156042989 ) / 7,665
exp = log ( 2.4156042989 ) / 7,665
exp = 0.38302579382 / 7,665
exp = 0.00004997074935681670 

rate = (10^exp -1)* n
rate = (10^0.00004997074935681670 -1) * n
rate = (1.0001150685 -1) * 365
rate = (.0001150685) * 365
rate = 0.0420000025 
rate = 4.20000025 %
rate = 4.2 %

Yes, it's just that easy. LOL

5 0

3 years ago

Read 2 more answers