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Mekhanik [1.2K]
3 years ago
7

The cost of 5 books is 71$ . What is the cost of each book

Mathematics
2 answers:
Goshia [24]3 years ago
5 0

$71 divided by 5 books will be $14.20

Alla [95]3 years ago
3 0
$14.20 is the cost of each book
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A factory that manufactures screws is performing a quality control experiment. Each object should have a length of no more than
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Answer:

a) Null Hypothesis: length of each screw is less than 14 centimeters

b) Alternate Hypothesis: length of each screw is equal to or greater than 14 centimeters

Step-by-step explanation:

Complete question

A factory that manufactures screws is performing a quality control experiment. Each object should have a length of no more than 14 centimeters. The factory believes that the length of the screws exceeds this value and measures the length of screws. The sample mean screw length was centimeters. The population standard deviation is known to be centimeters.

1. What is the null hypothesis?

2. What is the alternative hypothesis?

Solution :

The null hypothesis is basically the problem statement that needs to be tested.

Alternate hypothesis is opposite of that of null hypothesis

a) Null Hypothesis: length of each screw is less than 14 centimeters

b) Alternate Hypothesis: length of each screw is equal to or greater than 14 centimeters

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3 years ago
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Colt1911 [192]

Answer:

1

Step-by-step explanation:

8/2(4)

8/8

1

4 0
3 years ago
There are four nickels and six dimes in your pocket. You randomly pick a coin out of your pocket and place it on a counter. Then
Anna71 [15]
The probability of picking a nickel first would be: 4/10
The probability of picking a dime first would be: 6/10
4 0
3 years ago
Which of the following is true?
gtnhenbr [62]

Answer:

C..... I think it is a answer

6 0
3 years ago
During the first month of sales, a company sold 1,300,000
schepotkina [342]

The right answer is Option C.

Step-by-step explanation:

Given,

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Smartphones returned = 15%

No. of smartphones returned = 15% of smartphones sold

No. of smartphones returned =\frac{15}{100}*1300000

No. of smartphones returned = 0.15*1300000 = 195000 units

As sales and return rate remains same, therefore,

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1170000 units will be returned to the company during 6 months.

The right answer is Option C.

Keywords: multiplication, return rate

Learn more about multiplication at:

  • brainly.com/question/2154850
  • brainly.com/question/2367554

#LearnwithBrainly

5 0
3 years ago
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