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
Amiraneli [1.4K]
3 years ago
5

10. Subtract thefractions.20 1 / 2 - 15 1/2 =*Bonus: Reduce thefraction.​

Mathematics
1 answer:
BartSMP [9]3 years ago
3 0

Answer: 5

Step-by-step explanation:

20\frac{1}{2}-15\frac{1}{2}

20-15(\frac{1}{2}-\frac{1}{2})

5

You might be interested in
PLEASE HELP!! MEEEEE 1
mestny [16]

Answer:

(1,2) (3,2) ( 5,2)

Step-by-step explanation:

Each input value can only go to one output value

The only one that has each input only going to one output is (1,2) (3,2) ( 5,2)

8 0
3 years ago
2) Michael is going on a 3150-mile drive. He needs to stop for gas every 320 miles. How many times will he need to stop?
cupoosta [38]
He will need to stop 9 times
8 0
3 years ago
Read 2 more answers
The time a randomly selected individual waits for an elevator in an office building has a uniform distribution with a mean of 0.
Amiraneli [1.4K]

Answer:

The mean of the sampling distribution of means for SRS of size 50 is \mu = 0.5 and the standard deviation is s = 0.0409

By the Central Limit Theorem, since we have of sample of 50, which is larger than 30, it does not matter that the underlying population distribution is not normal.

0% probability a sample of 50 people will wait longer than 45 seconds for an elevator.

Step-by-step explanation:

To solve this problem, we 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 random variable X, with mean \mu and standard deviation \sigma, a large sample size, of at least 30, can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 0.5, \sigma = 0.289

What are the mean and standard deviation of the sampling distribution of means for SRS of size 50?

By the Central Limit Theorem

\mu = 0.5, s = \frac{0.289}{\sqrt{50}} = 0.0409

The mean of the sampling distribution of means for SRS of size 50 is \mu = 0.5 and the standard deviation is s = 0.0409

Does it matter that the underlying population distribution is not normal?

By the Central Limit Theorem, since we have of sample of 50, which is larger than 30, it does not matter that the underlying population distribution is not normal.

What is the probability a sample of 50 people will wait longer than 45 seconds for an elevator?

We have to use 45 seconds as minutes, since the mean and the standard deviation are in minutes.

Each minute has 60 seconds.

So 45 seconds is 45/60 = 0.75 min.

This probability is 1 subtracted by the pvalue of Z when X = 0.75. So

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

By the Central Limit Theorem

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

Z = \frac{0.75 - 0.5}{0.0409}

Z = 6.11

Z = 6.11 has a pvalue of 1

1-1 = 0

0% probability a sample of 50 people will wait longer than 45 seconds for an elevator.

8 0
3 years ago
What is g(x) = x squared
Gennadij [26K]

Answer:

3

Step-by-step explanation:

6 0
2 years ago
Please help with this!
GalinKa [24]

Answer:

-88

Step-by-step explanation:

Because when you all ad it down you get -96 and then -8= -88

8 0
2 years ago
Read 2 more answers
Other questions:
  • What times 5 equals 4
    7·2 answers
  • The perimeter of a rectangle is 34 units. Its width is 6.5 units.
    6·1 answer
  • The difference in the x-coordinates of two points is 3, and the difference in the y-coordinates of the two points is 6. What is
    8·2 answers
  • SOMEBODY PLEASEEE HELP ME
    13·1 answer
  • Isabel lives 2 7/9 miles from school. Janet lives 2 5/7 miles from school. Who lives farther away from school? How do you know?
    8·1 answer
  • Can someone help me on these?
    12·2 answers
  • Find the 14th term of the geometric sequence 2, 4, 8, ...
    5·1 answer
  • Fill in the blanks :)
    6·1 answer
  • Please help me for a question ​
    9·2 answers
  • Does #6 look right? Im struggling on this
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!