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
AURORKA [14]
3 years ago
15

Ann can run 27 miles in 3 hours.What is average speed in miles per hour?​

Mathematics
1 answer:
charle [14.2K]3 years ago
8 0

Step-by-step explanation:

To find the average speed, you divide miles by hours.

27/3

So the average speed in miles per hour is 9.

Hope it helps!

You might be interested in
(name the intersection of the figure) pls help if ur good at geometry
Ipatiy [6.2K]

Answer:

im ok, i can help

Step-by-step explanation:

6 0
3 years ago
A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confid
katrin [286]

Answer:

The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 865, \pi = \frac{408}{865} = 0.4717

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4717 - 1.96\sqrt{\frac{0.4717*0.5283}{865}} = 0.4384

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4717 + 1.96\sqrt{\frac{0.4717*0.5283}{865}} = 0.5050

The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).

6 0
3 years ago
HURRY BRAINLIEST AND 40 POINTS!!!
grandymaker [24]

Answer:

The answer is the first one and the last one.

Step-by-step explanation:

If an account cost $1 and each song is 1.5x. It has to be less than or equal to 25. So it would be $1 for (the account plus) 1.5x for (how many songs he buys) is less than or equal to 25 (the ammount on the gift card).

8 0
3 years ago
Read 2 more answers
Multiply using the distributive property 12(5y+4).
iragen [17]

Answer:

12(5y+4)

12(9y)

108y

hope it helps and I hope I did it right

Step-by-step explanation:

5 0
3 years ago
Can y’all pls help with number 6
barxatty [35]
1500x1.04^6=£1898 to the nearest whole number
8 0
3 years ago
Other questions:
  • Find m∠BAC and m∠DAB in the figure shown below.
    13·2 answers
  • Mae Ling earns a weekly salary of $325 plus a 6.5% commission on sales at a gift shop. How much would she make in a work week if
    15·1 answer
  • WILL MARK BRAINLIEST!!! help!​
    7·2 answers
  • Write two expressions that are equivalent to 2(x+4)
    11·2 answers
  • The graph of a system of equations with the same slope and the same y-intercepts will have no solutions.
    10·1 answer
  • Please help fast thanks <br><br><br><br><br><br><br> 4...........................
    13·1 answer
  • Help due soon plss!!!!
    11·1 answer
  • I need help with this one
    9·1 answer
  • Round your answer to the nearest hundredth.<br> BC=
    10·1 answer
  • It’s kinda easy but I wanna make sure it’s right pls help if you can
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!