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steposvetlana [31]
3 years ago
6

Answers Appreciated! Thanks if you help!

Mathematics
1 answer:
Kipish [7]3 years ago
8 0

Answer:6.28

Step-by-step explanation:

C=pi*diameter

C=3.14*2

C=6.28

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c

Step-by-step explanation:

plato

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3 years ago
An English professor assigns letter grades on a test according to the following scheme. A: Top 9% of scores B: Scores below the
sergeinik [125]

Answer:

The minimum score required for an A grade is 83.

Step-by-step explanation:

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 z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 72.3 and a standard deviation of 8.

This means that \mu = 72.3, \sigma = 8

Find the minimum score required for an A grade.

This is the 100 - 9 = 91th percentile, which is X when Z has a pvalue of 0.91, so X when Z = 1.34.

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

1.34 = \frac{X - 72.3}{8}

X - 72.3 = 1.34*8

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The minimum score required for an A grade is 83.

5 0
3 years ago
Juniors and seniors at a local school were surveyed to see if they were left-handed or right-handed. The data is displayed in th
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P(left handed senior) = 14/(36 + 14 + 44 + 106) = 14/200 = 0.07 = 7%
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F(x)= sin(arctanx). find the range of f.
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Answer is in the attachment below.

-1<f(x)<1

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Make <br> x<br> the subject of the formula<br> x<br> −<br> 3<br> =<br> q
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Answer:

x = q + 3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define Equation</u>

x - 3 = q

<u>Step 2: Solve for </u><em><u>x</u></em>

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2 years ago
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