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ale4655 [162]
3 years ago
7

Which situation can be represented by this equation?

Mathematics
2 answers:
Fittoniya [83]3 years ago
5 0

Answer:

A/First answer

Step-by-step explanation:

32 = flat fee

4x = rental fee of kayak per hour

14x = rental fee of kaya per hour (but on Adeventures Unlimited)

Sav [38]3 years ago
4 0

Answer:

fhgghfjgbnnh

Step-by-step explanation:

sorry i need points

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Ahmed is working at a restaurant . His boss pays him $15.50 per tour and promises a raise of $1.25 per hour every 6 months. Whic
grandymaker [24]
No se need puntos idk sorry jajjajaydyajjshdhdgeyyetegegdvdbds
3 0
3 years ago
A researcher is concerned about the impact of students working while they are enrolled in classes, and she likes to know if stud
8_murik_8 [283]

Answer:

(a) Point estimate = 7.10

(b) The critical value is 1.960

(c) Margin of error = 0.800

(d) Confidence Interval = (6.3, 7.9)

(e) We are 90% confident that the average number of hours worked by the students is between 6.3 and 7.9

Step-by-step explanation:

Given

\bar x = 7.10 -- sample mean

\sigma=5 --- sample standard deviation

n = 150 --- samples

Solving (a): The point estimate

The sample mean can be used as the point estimate.

Hence, the point estimate is 7.10

Solving (b): The critical value

We have:

CI = 90\% --- the confidence interval

Calculate the \alpha level

\alpha = 1 - CI

\alpha = 1 - 90\%

\alpha = 1 - 0.90

\alpha = 0.10

Divide by 2

\frac{\alpha}{2} = 0.10/2

\frac{\alpha}{2} = 0.05

Subtract from 1

1 - \frac{\alpha}{2} = 1 - 0.05

1 - \frac{\alpha}{2} = 0.95

From the z table. the critical value for 1 - \frac{\alpha}{2} = 0.95 is:

z = 1.960

Solving (c): Margin of error

This is calculated as:

E = z * \frac{\sigma}{\sqrt n}

E = 1.960 * \frac{5}{\sqrt {150}}

E = 1.960 * \frac{5}{12.25}

E =  \frac{1.960 *5}{12.25}

E =  \frac{9.80}{12.25}

E =  0.800

Solving (d): The confidence interval

This is calculated as:

CI = (\bar x - E, \bar x + E)

CI = (7.10 - 0.800, 7.10 + 0.800)

CI = (6.3, 7.9)

Solving (d): The conclusion

We are 90% confident that the average number of hours worked by the students is between 6.3 and 7.9

6 0
3 years ago
Write 41.139 as a mixed number.
AysviL [449]

Answer:

41 139/1000

Step-by-step explanation:

41.139

41 139/1000

8 0
2 years ago
Read 2 more answers
A number of eggs ,e, divide by 12
Arada [10]
1÷[email protected]
6 0
3 years ago
A new washing machine uses 45% less water than an older
enot [183]

Answer:The family will use 792 gallons of water in the new washing machine

Step-by-step explanation:

1440 X 0.55=792

100-45=55

5 0
3 years ago
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