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
sweet [91]
3 years ago
14

What do I do, please helpor just tell me the answer ​

Mathematics
1 answer:
Ket [755]3 years ago
6 0
You can use quizlet or maybe contact a friend
You might be interested in
4 divided by 63 please help yes joke
katrin2010 [14]

Answer:

15.75

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A professor gives her 100 students an exam; scores are normally distributed. The section has an average exam score of 80 with a
frozen [14]

Answer:

6.18% of the class has an exam score of A- or higher.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 80, \sigma = 6.5

What percentage of the class has an exam score of A- or higher (defined as at least 90)?

This is 1 subtracted by the pvalue of Z when X = 90. So

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

Z = \frac{90 - 80}{6.5}

Z = 1.54

Z = 1.54 has a pvalue of 0.9382

1 - 0.9382 = 0.0618

6.18% of the class has an exam score of A- or higher.

4 0
3 years ago
Convert the angle \theta=70^\circθ=70 ∘ theta, equals, 70, degrees to radians.
Daniel [21]

Answer:

7/18 pi

Step-by-step explanation:

To convert from degrees to radians, multiply by pi/180

70 * pi/180

7/18 pi

4 0
2 years ago
A jewelry supply shop buys silver chains from a manufacturer for c dollars each, and then sells the chains at a 57% markup. Find
g100num [7]
I believe it is 70.65
3 0
3 years ago
Read 2 more answers
The lake commission tagged 125 fish. A week later, 200 fish were caught and 65 of these fish had tags. Estimate how many fish we
Helga [31]

Answer:

600

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • HELP ASAP PLEASE need help
    9·2 answers
  • Opportunity to get Brainliest! I will put various questions and will mark BRAINLIEST!
    11·1 answer
  • A triangle undergoes a sequence of transformations. First, the triangle is dilated by a scale factor of 1/3 about the origin. Th
    6·2 answers
  • Consider the system of equations given in slope-intercept form. y = −13x + 17, y = 5x - 23 The solution seems to be about (8, 14
    10·2 answers
  • The maximum height of a vehicle that can safely pass under a bridge is 12 feet 5 inches. A truck measures 162 inches in height.
    8·1 answer
  • The Ruiz family is exchanging euros for US dollars. The exchange rate is 1 euro equals 1.35261 USD. Since the Ruiz family knows
    15·1 answer
  • Need help with 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12
    6·1 answer
  • 2.
    5·1 answer
  • What is the surface area?
    12·1 answer
  • If QR is 17 more than twice x, RS is 19 less than six times x, and QS is one less than four times x, find x and the measure of e
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!