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
Lerok [7]
3 years ago
12

If it takes you 12.5 minutes to swim 20 laps around a pool, what's the unit rate ?

Mathematics
1 answer:
Gemiola [76]3 years ago
4 0
.625 Answer. U divide 12.5 by 20 for unit.
You might be interested in
A rectangle has an area of 36 inches squared. Write an equation to show how the length (l) varies inversely the width (w).
Anastaziya [24]
Start with the first sentence, and the definition of the area of a rectangle:
l * w = 36

Rewrite the equation to get
l = 36 / w
or
w = 36 / l
Either one shows the inverse relationship between w and l.

Assuming the last part wants you to write an equation for an x-y graph, the equation would be
y = 36 / x
8 0
3 years ago
Find the area of a regular hexagon with a 48- inch perimeter
solmaris [256]

First, you must find the side length. It is a hexagon so there are 6 sides. You take the perimeter by 6 48/6 and get 8. Then plug it into formula (3 sqrt 3)/2 a^2 where a is side length. Plug into formula and get an answer of 166.28 in^2

7 0
3 years ago
Which of the following statements is true?
gladu [14]

Answer:

C

Step-by-step explanation:

The answer is C.

5 0
3 years ago
An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 2 of 2 : S
ziro4ka [17]

Answer:

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

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:

Sample of 421 new car buyers, 75 preferred foreign cars. So n = 421, \pi = \frac{75}{421} = 0.178

85% confidence level

So \alpha = 0.15, z is the value of Z that has a pvalue of 1 - \frac{0.15}{2} = 0.925, so Z = 1.44.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 - 1.44\sqrt{\frac{0.178*0.822}{421}} = 0.151

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 + 1.44\sqrt{\frac{0.178*0.822}{421}} = 0.205

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

8 0
2 years ago
PLs Help!<br> Pls help!<br> Pls Help!
LiRa [457]
70% of 60,000,000 is 42,000,000
5 0
3 years ago
Other questions:
  • You work at a dog food factory. The factory makes 10,600 kilograms of dog food a day. How many metric tons of dog food does the
    12·1 answer
  • Frances has 4 square baking dishes. Each pan is 7 inches × 7 inches × 2 inches. Which expression will give her the total volume
    10·1 answer
  • For a certain instant lottery game comma the odds in favor of a win instant lottery game, the odds in favor of a win are given a
    5·2 answers
  • If you forgot to study for a quiz with 10
    6·1 answer
  • When is a parallelogram is a rhombus ?
    12·2 answers
  • 2y-z for y=21 and z=19​
    5·1 answer
  • you buy several pairs of socks for $4.50 per pair plus a shirt for $10. the total amount you spend id a function of the number o
    7·1 answer
  • Solve the system using substitution y=2x+10 y=x+8
    12·1 answer
  • Does anyone know the answers ???
    7·1 answer
  • At a football stadium, 20% of the fans in attendance were teenagers. If there were 180
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!