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DochEvi [55]
3 years ago
12

Lena purchased a prepaid phone card for $20. Long distance calls cost 14 cents a minute using this card.

Mathematics
1 answer:
bearhunter [10]3 years ago
8 0

Answer:

havenche ai polld pener es quanto

Step-by-step explanation:

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A regular six-sided die is rolled 1000 times. Use the binomial distribution to determine the standard deviation for the number o
ANTONII [103]

The standard deviation for the number of times an odd number is rolled is 15.8

<h3>How to determine the standard deviation?</h3>

The given parameters are:

Die = regular six-sided die

n = 1000

The probability of rolling an odd number is:

p = 1/2 = 0.5

The standard deviation is then calculated as;

\sigma = \sqrt{np(1 - p)

This gives

\sigma = \sqrt{1000 * 0.5 * (1 - 0.5)

Evaluate the products

\sigma = \sqrt{250

Evaluate the root

\sigma = 15.8

Hence, the standard deviation is 15.8

Read more about standard deviation at:

brainly.com/question/16555520

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8 0
2 years ago
Shawn earns $10 per hour for the first 32 hours he works in a week. For any additional
olchik [2.2K]

Answer:

im sorry im not sure but i think 9

Step-by-step explanation:

5 0
3 years ago
Select the correct answer.
aleksley [76]

Answer:

A. 247.03

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find the area of the shape.
Anna35 [415]

Answer:  12.56 / 4 = 3.1416 =9.4248

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5 0
3 years ago
Which statement is true? A. 13/14 &gt; 25/28 B. 21/45 &lt; 4/9 C. 5/6 &gt; 11/12 D. 4/5 &lt; 8/25
nasty-shy [4]

Rewrite the fractions with common denominators and then answer:

A:

13/14 > 25/28

26/28 > 25/28    

This is True

B) 21/45 < 20/45  False

C) 10/12 > 11/12

False

D) 20/25 < 8/25

False

The true statement is A.

7 0
3 years ago
Read 2 more answers
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