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3 years ago

A train moves at constant speed and travels 6 miles in 4 minutes. What is its speed in miles per minute?

Mathematics

1 answer:

ella [17]3 years ago

8 0

Answer:

1.5 miles per minute

Step-by-step explanation:

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Someone find x !!!!!!

BartSMP [9]

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3 years ago

your job pays 8$ per hour Write a variable expression for your pay in dollars for working h hours. What is your pay if you work

lawyer [7]

Answer:

$8h

Your pay is $288 for working 36 hours

Step-by-step explanation:

I hope this helps :)

7 0

3 years ago

The average value of a function f over the interval [−2,3] is −6 , and the average value of f over the interval [3,5] is 20. Wha

Xelga [282]

Answer:

The average value of $f$ over the interval $[-2,5]$ is $\frac{10}{7}$ .

Step-by-step explanation:

Let suppose that function $f$ is continuous and integrable in the given intervals, by integral definition of average we have that:

$\frac{1}{3-(-2)} \int\limits^{3}_{-2} {f(x)} \, dx = -6$ (1)

$\frac{1}{5-3} \int\limits^{5}_{3} {f(x)} \, dx = 20$ (2)

By Fundamental Theorems of Calculus we expand both expressions:

$\frac{F(3)-F(-2)}{3-(-2)} = -6$

$F(3) - F(-2) = -30$ (1b)

$\frac{F(5)-F(3)}{5-3} = 20$

$F(5) - F(3) = 40$ (2b)

We obtain the average value of $f$ over the interval $[-2, 5]$ by algebraic handling:

$F(5) - F(3) +[F(3)-F(-2)] = 40 + (-30)$

$F(5) - F(-2) = 10$

$\frac{F(5)-F(-2)}{5-(-2)} = \frac{10}{5-(-2)}$

$\bar f = \frac{10}{7}$

The average value of $f$ over the interval $[-2,5]$ is $\frac{10}{7}$ .

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3 years ago

How would I simplify number 3) ?

Anna [14]

You wouldn’t because 3 is the base number and cannot be simplified anymore

6 0

3 years ago

Read 2 more answers

A marching band wants to raise 20,000 at its annual fundraiser if they sell tickets for 20 a piece how many tickets will they ha

nataly862011 [7]

1000 tickets because you would divide 20000 divided by 20 =1,000

8 0

3 years ago