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
anzhelika [568]
3 years ago
15

suppose you plan to ride your bicycle from portland oregon to seattle washington and back to portland. the distance between port

land and seattle is 175 miles. you plan to ride 25 miles each day. write the absolute value function d(x) where x is the number of days into the ride.
Mathematics
1 answer:
grin007 [14]3 years ago
7 0

Answer:

d(x) = 175 - |175 - 25x|

Step-by-step explanation:

Suppose I plan to ride your bicycle from Portland Oregon to Seattle Washington and back to Portland.

Portland and Seattle are 175 miles apart. I plan to travel 25 miles every day.

If we consider the starting point i.e. Portland as the zero distance i.e. reference, then we can model the distance from Portland d(x) as

d(x) = 175 - |175 - 25x|

where x is the number of days into the ride. (Answer)

You might be interested in
Leah flips a coin, and then she spins a spinner with 3 equal sections colored red, green, and blue. What is the probability that
svet-max [94.6K]

Answer: 33.3%

Step-by-step explanation:

Since there are two sides to a coin, the probability is 1/2. Since there are 3 sections on the spinner, the probability would be 2/3. Since "and" means multiply in this scenario, your answer would be 2/6, which simplifies to 1/3, which, in percentage form to the nearest percent, is 33.3%.

8 0
3 years ago
This week at HEB, pork chops cost $1.60 per pound. Steve bought 2 1/4 pounds of pork chops. If he paid with a $10 bill, how much
kompoz [17]

Answer:

He received $6.40 in change.

Explanation:

Since he bought 2.25 pounds, you multiply that by 1.6 to get a sum of 3.6. Since he paid with a ten dollar bill, and he only has to pay 3.60, they will give him back 6.40 in change.

Hope this helped :)

6 0
3 years ago
If you drive 70 miles per hour, how long will it take you drive 70 miles?
inysia [295]

Answer:

1 hour

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Are these polygons similar ? Explain why or why not.
expeople1 [14]

Answer:

Yes, the polygons are similar.

Step-by-step explanation:

A similar polygon is a polygon that shares the same scale factor as another polygon. A scale factor is a number you can multiply each side by to get a similar figure,


Step 1:

Divide a few of the sides. You do not need to divide every side to find the ratio, but do at least 2 or 3 to guarantee that the scale factor remains the same throughout the sides. Let’s divide a few pairs of sides.

27/18=1.5

30/20=1.5

21/14=1.5

Step 2:

To really be safe, even though we can clearly tell this is a similar figure, is we can multiply each side on the right figure by 1.5, our scale factor, and see if we generate the sides on the left figure.

18*1.5=27

20*1.5=30

14*1.5=21

And this is why the polygons are similar :)

4 0
2 years ago
A recent survey describes the total sleep time per night among college students as approximately Normally distributed with mean
marin [14]

Answer:

a) \sigma_{\bar X}= \frac{1.26}{\sqrt{165}}= 0.0981

b) We expect 68% of the values between : (6.6219, 6.8181)

We expect 95% of the values between : (6.5238, 6.9162)

We expect 99.7% of the values between : (6.4257, 7.0143)

c) z = \frac{6.9-6.72}{0.0981}= 1.835

And we can use the z normal table or excel and we got:

P(Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Let X the random variable that represent the total sleep time of a population, and for this case we know the distribution for X is given by:

X \sim N(6.72,1.26)  

Where \mu=6.72 and \sigma=1.26

(a)  What is the standard deviation for the average time in hours? (Round your answer to four decimal places.)

For this case the sample mean have the following distirbution

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And the deviation is given by:

\sigma_{\bar X}= \frac{1.26}{\sqrt{165}}= 0.0981

in minutes?= (Round your answer to three decimal places.)  

(b)  Use the 95 part of the 68–95–99.7 rule to describe the variability of this sample mean. (Round your answer to four decimal places.)

The empirical rule, also known as three-sigma rule or 68-95-99.7 rule, "is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ)".

• The probability of obtain values within one deviation from the mean is 0.68

• The probability of obtain values within two deviation's from the mean is 0.95

• The probability of obtain values within three deviation's from the mean is 0.997

We expect 68% of the values between : (6.6219, 6.8181)

We expect 95% of the values between : (6.5238, 6.9162)

We expect 99.7% of the values between : (6.4257, 7.0143)

(c) What is the probability that your average will be below 6.9 hours? (Round your answer to four decimal places.)

For this case we can use the z score formula given by:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And we can find the z score for 6.9 and we got:

z = \frac{6.9-6.72}{0.0981}= 1.835

And we can use the z normal table or excel and we got:

P(Z

4 0
3 years ago
Other questions:
  • If x+y+z=9, xy+yz+zx =26; find x²+y²+z²
    7·2 answers
  • Use the method of dividing by prime factors to find the greatest common factor of 140 and 350.
    13·1 answer
  • How many solutions does this system of equations have? Use either the substitution method or the elimination method. y = 2x + 3y
    11·2 answers
  • SOMEONE PLEASE HELP ME WITH THIS ALL YOU HAVE TO DO IS ANSWER THE QUESTION PLEASE
    7·1 answer
  • A caterer prepares twice as many pizzas as she usually prepares for a large party. The caterer usually prepares 4 pizzas. The ca
    11·1 answer
  • How many 34 cup bowls can be made from 30 cups of soup?
    12·1 answer
  • Can someone help on this please
    14·2 answers
  • Find the length of the third side. If necessary, write in simplest radical form.<br> V33<br> 7
    13·1 answer
  • Dominic got a new job through the Valley Employment Service. The job pays $71.2K per
    7·1 answer
  • in Each diagram below right, the 2 numbers on the side of the x that are multiplied together to get the top number of the x but
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!