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
jenyasd209 [6]
3 years ago
5

31)The scale on a map shows that 5 centimeters = 2 kilometers.

Mathematics
1 answer:
Sonbull [250]3 years ago
8 0

Answer:

13.5 cm

Step-by-step explanation:

if 5 cm is 2 km, then 10 cm is 4 km. To find one km you do half of 5 cm. which is 3.5 cm. So 10+3.5=13.5

You might be interested in
Need help ASAP will give brainliest
Studentka2010 [4]

Answer:

work

Step-by-step explanation:

work hard and get into a good school and live a life

8 0
2 years ago
What is 300% of 90? Show your work
BARSIC [14]

Answer:

270

Step-by-step explanation:

becasue 100 percent of 90 would be 90

100*3=300

so multiply

90*3=270

5 0
3 years ago
I NEED HELP PLS AND THX <3
timama [110]
I think it’s 0.1

1 pizza divided 10 slices = 0.1
4 0
3 years ago
Read 2 more answers
In college​ basketball, a shot made from beyond a designated arc radiating about 20 ft from the basket is worth three points ins
denis-greek [22]

Answer:

a) By the Central Limit Theorem, the distribution would be approximately normal, with mean \mu = 0.45 and standard deviation s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.45*0.55}{100}} = 0.0497

b) 4.02 standard deviations below the mean.

c) Making 25 or less shots has a pvalue of -4.02. Z-scores lower than -2 are considered surprising, so yes, it would be surprising for him to make only 25 of these shots.

Step-by-step explanation:

To solve this question, we are going to need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using 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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For proportions, we have that the mean is \mu = p and the standard deviation is s = \sqrt{\frac{p(1-p)}{n}}

In this problem, we have that:

p = 0.45, n = 100

a)By the Central Limit Theorem, the distribution would be approximately normal, with mean \mu = 0.45 and standard deviation s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.45*0.55}{100}} = 0.0497

b)This is Z when X = 0.25.

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

By the Central Limit Theorem

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

Z = \frac{0.25 – 0.45}{0.0497}

Z = -4.02

4.02 standard deviations below the mean.

c) Making 25 or less shots has a pvalue of -4.02. Z-scores lower than -2 are considered

surprising, so yes, it would be surprising for him to make only 25 of these shots.

3 0
2 years ago
Is my answer right? the other options are <br><br> A.0.33<br> B.0.42<br> C.0.58<br> D.0.67
Fittoniya [83]
Yes 0.42 is correct!!
4 0
3 years ago
Other questions:
  • Chelsea needs to take a taxi home and lives 7 miles away. The taxi company charges $4 plus $1.50 per mile. How much will she pay
    11·1 answer
  • Five students ran in their schools field day competition. Chris beat Allie by 7 yards but he was 2 yards behind Elena. Derrick f
    9·1 answer
  • Is X=11,3 ??????????????????????????????????????????????
    7·2 answers
  • PLEASE HELP
    8·1 answer
  • 3 units
    11·1 answer
  • Initially, a population of rabbits was found to contain 192 rabbits. It was estimated that the population was growing exponentia
    13·1 answer
  • Zane eats 1/8 of a pizza. Later he eats 1/2 of the pizza. Did he eat more the first or second one?
    13·2 answers
  • I need help with this assignment
    12·1 answer
  • Which of the following expressions are equivalent to −5.93+(−8.62)+5.93?
    8·2 answers
  • Solve the equation for x by graphing .
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!