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zvonat [6]
3 years ago
5

At the henning poultry farm, 56 of he 280 chickens being raised are Leghorn chickens. What is the ratio of the number of Leghorn

chickens to the total number of chickens
Mathematics
2 answers:
Artist 52 [7]3 years ago
7 0

Answer: 1/5

Step-by-step explanation:

Virty [35]3 years ago
6 0
1:5 56/280 is .2 which can be converted to 1/5 which is the same in ratio form.
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Y varies inversely with x and x= 3 when y =10. What is the value of y when x=6?<br> k =<br> y=
iris [78.8K]

Answer: Y=20

Step-by-step explanation:

X is doubled from 3 to 6 meaning that y is also doubled.

Double 10 is 20 so y=20.

7 0
2 years ago
Find the missing side
Lapatulllka [165]

Answer:

Step-by-step explanation:

\sqrt{61}

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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
In a certain neighborhood there are 25 dogs and 10 cats. In a neighborhood across the way, the ratio of cats to dogs is the same
Akimi4 [234]

28 because 2.5 times 8 equals 20 plus that 8 equals 28.

Step-by-step explanation:

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3 years ago
What equation models the data in the table if d = number of days and c = cost?
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C = 22 * d
6 0
3 years ago
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