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sladkih [1.3K]
3 years ago
6

If a train travels 500 miles in 4 hours, what is the speed

Mathematics
2 answers:
Debora [2.8K]3 years ago
8 0

Answer:

125 mph

Step-by-step explanation:

500 divided by 4 = 125 therefore its 125 miles per hour

VikaD [51]3 years ago
7 0

Answer:125

Step-by-step explanation:

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(1 point) Consider the function f(x)=2x3−6x2−48x+5 on the interval [−4,10]. Find the average or mean slope of the function on th
andreyandreev [35.5K]

Answer:

The mean slope on the interval is 68

Step-by-step explanation:

The formula to find the mean slope on an interval [a, b] is given by:

\frac{f(b)-f(a)}{b-a}

So now, we are going to find f(10) and f(-4) and will substitute these values in the formula.

f(10)=2(10)^{3} -6(10)^{2} -48(10)+5\\f(10) =2(1000)-6(100)-480+5\\f(10)=2000-600-480+5\\f(10)=925\\\\f(-4)=2(-4)^{3} -6(-4)^{2} -48(-4)+5\\f(-4)=2(-64)-6(16)+192+5\\f(-4)=-128-96+192+5\\f(-4)=-27

So the mean slope of the function on the interval [-4,10] is:

\frac{f(10)-f(-4)}{10-(-4)} =\frac{925-(-27)}{14} =\frac{925+27}{14} =\frac{952}{14} =68

8 0
3 years ago
The diameter of a spherical basketball is 10 inches.
maksim [4K]

Answer:

523.6

Step-by-step explanation:

Here is the equation to get that answer:

V=4/3πr3=4/3·π·53≈523.59878

6 0
3 years ago
Explain how to do this with the answer please
Lesechka [4]
It is 90 yds squares because formula for a triangle for area is (length times width) divided by 2. So it would be 180 divided be 2 which is 90 :)
7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20-%2022%20%3D%2011%20-%206a" id="TexFormula1" title=" - 22 = 11 - 6a" alt=" - 22 = 11 - 6a"
jolli1 [7]
<h3><u>The value of a is equal to 5.5</u></h3>

-22 = 11 - 6a

<em><u>Add 6a to both sides.</u></em>

6a - 22 = 11

<em><u>Add 22 to both sides.</u></em>

6a = 33

<em><u>Divide both sides by 6.</u></em>

a = 5.5

7 0
3 years ago
Job-sharing is an innovative employment alternative that originated in Sweden and is becoming popular in the United States (for
Veronika [31]

Answer:

a. The population of interest is:

xi. All workers in the U.S. who have participated in the job-sharing program

b. The variable that is being measured is:

viii. The percentage of the 1035 major firms surveyed which offer job-sharing to their employees

c. The sample selected is:

vi. The 1,035 firms surveyed

d. The parameter is:

v. Proportion of employees who are working mothers

e. The statistic is:

ix. 25% (stated as 23%)

Step-by-step explanation:

The parameter of a population is a fixed value calculated from every individual in the population.  It is different from a statistic, which is computed from a sample of the population.  The statistic is meant to approximate a population parameter.

3 0
3 years ago
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