1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Irina18 [472]
3 years ago
12

If a wheel with a radius of 50 inches spins at a rate of 500 revolutions per minute, find the approximate linear velocity in mil

es per hour. use 3.14 and round to the nearest 10th
Mathematics
1 answer:
Artyom0805 [142]3 years ago
6 0

Answer:

The linear velocity in miles per our is 14789400 mph .

Step-by-step explanation:

Given as :

The radius of wheel = 50 inches

So, the diameter of wheel = 2 × radius = 2×50 = 100 inches

Or, Diameter = 100 × 1.57 miles = 157 miles

The number of revolution per minutes = 500 RPM

or, The number of revolution per hours = 500 × 60 = 30,000 RPH

Now, Circumference of wheel = \pi×diameter

Or, C = 3.14 × 157 = 492.98 miles

So, Distance cover by wheel = C × RPH × Time in hour

or, D = 492.98 × 30,000 × Time in hour

And Velocity = \dfrac{\textrm Distance in miles }{\textrm Time in hour}

or, V = \dfrac{\textrm  492.98 × 30,000 × Time in hour }{\textrm Time in hour}

or, V = 14789400 miles per hour

Hence The linear velocity in miles per our is 14789400 mph .   Answer

You might be interested in
The random variable x has the following probability distribution: x f(x) 0 .25 1 .20 2 .15 3 .30 4 .10 a. Is this probability di
Reptile [31]

Answer and Explanation:

Given : The random variable x has the following probability distribution.

To find :

a. Is this probability distribution valid? Explain and list the requirements for a valid probability distribution.

b. Calculate the expected value of x.

c. Calculate the variance of x.

d. Calculate the standard deviation of x.

Solution :

First we create the table as per requirements,

x      P(x)         xP(x)           x²            x²P(x)

0    0.25           0               0                0

1     0.20        0.20             1              0.20

2    0.15          0.3               4             0.6

3    0.30         0.9               9             2.7

4    0.10          0.4               16             1.6

   ∑P(x)=1     ∑xP(x)=1.8               ∑x²P(x)=5.1

a) To determine that table shows a probability distribution we add up all five probabilities if the sum is 1 then it is a valid distribution.

\sum P(X)=0.25+0.20+0.15+0.30+0.10

\sum P(X)=1

Yes it is a probability distribution.

b) The expected value of x is defined as

E(x)=\sum xP(x)=1.8

c) The variance of x is defined as

V=\sum x^2P(x)-(\sum xP(x))^2\\V=5.1-(1.8)^2\\V=5.1-3.24\\V=1.86

d) The standard deviation of x is  defined as

\sigma=\sqrt{V}

\sigma=\sqrt{1.86}

\sigma=1.136

5 0
2 years ago
2x+2y= 24 <br> x=3y <br> What is the value of x+y?
natita [175]

Answer:

x = 9

y = 3

Step-by-step explanation:

2x + 2y = 24 is the same as x + y = 12

using substitution, x = 12-y

12 - y = 3y

12 = 4y

y = 3

x = 3(3)

x = 9

5 0
3 years ago
What is 7x+4=2x+22? and the answer has to be x=
Mrrafil [7]

Answer:

x = 18/5

Step-by-step explanation:

7x + 4 = 2x+ 22

5x = 18

x = 18/5

7 0
3 years ago
Read 2 more answers
COEFFICIENTS AND VARIABLES! PLEASE SOLVE ALL ASAP! ANSWER = BRAINLIEST
sweet [91]

no hhahahahahahaahahaahahhaahha

6 0
3 years ago
A triangular garden has an area of 9 square yards which figure could represent the garden
zloy xaker [14]

Answer:

For edginuity the answer is the last one.

Step-by-step explanation :

You multiply 3 x 3 and it’s 9. Have a great day and stay positive during this pandemic!!

4 0
3 years ago
Read 2 more answers
Other questions:
  • Can Someone please help me with this please please please
    14·1 answer
  • The area of a round table is 1.13 m2. Find the radius length of
    15·1 answer
  • Write an equation for 22 = -11k
    7·1 answer
  • An artist is painting a large mural of flowers on the
    6·1 answer
  • QUESTION 6
    14·1 answer
  • if hadley sucked 2 toes in the morning 5 of her grandpas toes in the afternoon then 3 more in the night how many toes did she su
    10·1 answer
  • Statistics urgent<br> Use n=6 and p=0.85 to complete
    11·1 answer
  • Profit is the amount of money that remains after all expenses of a project have been paid. The year has just​ ended, and Ajax​ C
    13·1 answer
  • Please help me :)<br><br><br> ty ty
    9·1 answer
  • True or False? If ab&gt;0, then a&gt;0, b&gt;0 or a&lt;0, b&lt;0
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!