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
Tema [17]
3 years ago
12

Hong hikes at least 1 hour but not more than 4 hours. She hikes at an average rate of 2.7 mph. The function f(t)=2.7t represents

the distance she hikes in t hours.
What is the practical range of the function?

a) all real numbers from 1 to 4, inclusive

b) all real numbers

c) all real numbers from 2.7 to 10.8, inclusive

d) all multiples of 2.7 between 2.7 and 10.8, inclusive
Mathematics
1 answer:
Nimfa-mama [501]3 years ago
6 0
C because its the most best answer.
You might be interested in
A plant cell is 0.00001267 meter wide.How is this number written in scientific notation?
MA_775_DIABLO [31]
<span>The answer is 0.00001267 m = 1.267 * 10^(-5) m. In scientific notation, the number is written as two factors - a number m from 0-10 and 10 raised to the n power: m x 10^n. 0.00001267 m = 1.267 x 0.00001 m. 0.00001 m = (0.1)^5 = 10^(-5). So: 0.00001267 m = 1.267 x 0.00001 m = 1.267 x (0.1)^5 m = 1.267 x 10^(-5) m.</span>
3 0
3 years ago
A battery has a lifetime that is approximately normally distributed with a mean of 600 hours and a standard deviation of 50 hour
miss Akunina [59]

Answer:

A. Your battery is likely defective since such poor performance is extremely unlikely.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

If X is more than two standard deviations from the mean, it is considered an unlikely outcome.

In this question, we have that:

\mu = 600, \sigma = 50

Which of the following conclusions is the most appropriate given this information?

Lasted 400 hours, so X = 400.

Z = \frac{X - \mu}{\sigma}

Z = \frac{400 - 600}{50}

Z = -4

4 standard deviations from the mean, so unlikely.

So the correct answer is:

A. Your battery is likely defective since such poor performance is extremely unlikely.

3 0
3 years ago
Can someone help me with numbers 4-7 please!! Thank you so much!!
Sever21 [200]
4. positive. 5.zero. 6.undefined. 7. negative
7 0
3 years ago
Can someone please help me with this​
olasank [31]

Answer:

Surface Area = 139.4 (rounded to nearest tenth)

6 0
3 years ago
Hiw do I Graph the line y=-3
Lostsunrise [7]

Answer:

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Be What's the difference between the high and low temperature in the thermometer? Highest temperature 3°F and the lowest tempera
    9·2 answers
  • When truckers are on long-haul drives, their driving logs must reflect their average speed. Average speed is the total distance
    10·1 answer
  • Monthly salary is 1848 plus a sales commission of 5.2% of the total sales for the month. what is the equation
    7·1 answer
  • A rectangle has an area of 20 ft.² in a similar rectangle has an area of 180 ft.² what is the ratio of areas of the similar
    13·1 answer
  • Given that the measurement is in centimeters, find the circumference of the circle to the nearest tenth. (Use 3.14 for π)
    12·2 answers
  • How to check volume of cabinets 24by72by18
    15·2 answers
  • 10) what is the algebraic expression for the following word phase : the sum of 5 and 2x?
    13·1 answer
  • One lap around the park is 0.65 mile. Hal ran 4.5 laps. How many miles did Hal run?
    9·2 answers
  • I need your help please!!<br><br> **the answer choices are in the pictures as well**
    5·1 answer
  • a school has 415 third graders ans 388 second graders. How many more third graders are there than second grades?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!