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
DanielleElmas [232]
3 years ago
12

Which of the following sentences is true?

Mathematics
2 answers:
mezya [45]3 years ago
7 0

Answer:

A the first one

Step-by-step explanation:

guajiro [1.7K]3 years ago
5 0

Answer:

the first one is the only correct answer

Step-by-step explanation:

You might be interested in
The points obtained by students of a class in a test are normally distributed with a mean of 60 points and a standard deviation
Paraphin [41]

Answer:

0.13% of students have scored less than 45 points

Step-by-step explanation:

Problems of normally distributed samples 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.

In this problem, we have that:

\mu = 60, \sigma = 5

About what percent of students have scored less than 45 points?

This is the pvalue of Z when X = 45. So

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

Z = \frac{45 - 60}{5}

Z = -3

Z = -3 has a pvalue of 0.0013

0.13% of students have scored less than 45 points

3 0
3 years ago
What is the y-intercept of the graph?
kotegsom [21]
(0, -5) is the y intercept
5 0
2 years ago
The table shows Malena's bank account summery for a month. Which two values could be the remaining two debits ?
Bogdan [553]

b, but I'm not sure. this could very easily be incorrect. you may need to look this up on google first.

6 0
3 years ago
Find the value of 4x if x/2=3
Doss [256]

Answer:

24

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

x/2 = 3

x = 3×2

x = 6

Therefore

4x = 4 × 6

4x = 24

4 0
3 years ago
Read 2 more answers
Plz help will be thanked and will pick out brainly
Brums [2.3K]
The answer is 32
Hope this helps:D
have a great rest of a brainly day!
5 0
2 years ago
Other questions:
  • Write a fraction equal to 3/4 that has a denominator of 12​
    9·2 answers
  • What is the greatest common factor of 42 and 90 and 81
    12·2 answers
  • What is 3 2/9 written as an improper fraction?
    9·1 answer
  • Between which two integers is the positive value of the square root of 55?
    14·2 answers
  • Is the function represented by the table non-linear?
    13·1 answer
  • 0 (2 + 3) + 42 x (5 – 3) =<br> What Does this equal
    7·1 answer
  • How much water should be added to 12mL of ​7% alcohol solution to reduce the concentration to ​6%?
    10·2 answers
  • Dara spends $16 on tubes of paint and disposable brushes for an art project. Each tube of paint costs $3, and each disposable br
    13·2 answers
  • NEED HELP QUICKLY! PICTURE BELOW!
    5·1 answer
  • When constructing a confidence interval for a difference between two population proportions, why is it important to check that t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!