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
lions [1.4K]
3 years ago
12

URGENT! WILL GIVE BRAINLIEST!!!!

Mathematics
1 answer:
user100 [1]3 years ago
4 0
Hello There!

85 / 4 = 21.25

21.25 / 17 = 1.25

Scale factor is 1.25

Hope this helps!
You might be interested in
What is the equation of the axis of symmetry
stich3 [128]

Answer:

x=3

Step-by-step explanation:

5 0
3 years ago
CNNBC recently reported that the mean annual cost of auto insurance is 965 dollars. Assume the standard deviation is 113 dollars
velikii [3]

Answer:

P(939.6 < X < 972.5) = 0.6469

Step-by-step explanation:

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

Normal Probability Distribution:

Problems of normal distributions can be 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.

CNNBC recently reported that the mean annual cost of auto insurance is 965 dollars. Assume the standard deviation is 113 dollars.

This means that \mu = 965, \sigma = 113

Sample of 57:

This means that n = 57, s = \frac{113}{\sqrt{57}} = 14.97

Find the probability that a single randomly selected policy has a mean value between 939.6 and 972.5 dollars.

This is the pvalue of Z when X = 972.5 subtracted by the pvalue of Z when X = 939.6. So

X = 972.5

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

By the Central Limit Theorem

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

Z = \frac{972.5 - 965}{14.97}

Z = 0.5

Z = 0.5 has a pvalue of 0.6915

X = 939.6

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

Z = \frac{939.6 - 965}{14.97}

Z = -1.7

Z = -1.7 has a pvalue of 0.0446

0.6915 - 0.0446 = 0.6469

So

P(939.6 < X < 972.5) = 0.6469

3 0
3 years ago
Order the fractions from least to greatest.<br> 6 3/4, 6 1/2, 6 5/6, 6 3/8
GenaCL600 [577]

Answer:

6 3/8, 6 1/2, 6 3/4, 6 5/6

Step-by-step explanation:

I recommend converting everything to decimals, so 6.375, 6.5, 6.75, and 6.833.

Hope this helps :)

6 0
3 years ago
A building blueprint has a scale of 2 inches equal to 25 feet. On the blueprint, the 10-story building has a height of 12 inches
galben [10]
You can do 12 divided by 2
The answer is 6
SO you can do 25 times 6
The actual height is 150 feet
3 0
4 years ago
Please help will give brainliest<br> And happy Halloween
kramer
Answer to the problem is s=0.6
3 0
3 years ago
Read 2 more answers
Other questions:
  • MARKING BRAINIEST!!! PLEASE HELP ASAP!!!
    12·1 answer
  • Compare ratio for 4/5 and 3/7​
    10·1 answer
  • Divide, and then round the answer to two decimal places:<br><br> 0.6256108÷0.527
    14·1 answer
  • Can u please help me? I need help
    12·1 answer
  • How did ruby bridges son died
    12·2 answers
  • What is the value of x?<br><br> x = ___
    13·1 answer
  • Rob is making a pizza the radius of the pizza is 21 inches what is the circumference of the pizza using 3.14 rounded to the near
    6·1 answer
  • There are over 23,000,000 people in Australia. Which expression is equivalent to 23,000,000?​
    8·1 answer
  • Free Branliest<br> Answer please I LONELY PLS GUYS PLEASE
    11·2 answers
  • Help plz help ,!!,!,!,,,!!,!,!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!