All categories

2 years ago

Item 6

Mathematics

1 answer:

Sedbober [7]2 years ago

7 0

To find the diameter of the circle it’s C=(2)(3.14)(r) radius is 8/2 which is 4 so 2(3.14)(4) is 25.13 + 36 is 61.13

The perimeter of the whole figure is 61.13in^2

You might be interested in

Please help me <br>choose the corect one

Illusion [34]

Answer:

5 dollar intervals

Step-by-step explanation:

6 0

3 years ago

Tju [1.3M]

Answer:

64x^127

Step-by-step explanation:

caculate it with all the numb

3 0

1 year ago

determine any data values that are missing from the table assuming that the data represent a linear function

IRISSAK [1]

Answer:

I think D

Step-by-step explanation:

I hope it's right and I hope you mark me brainlist

8 0

2 years ago

Can you plz answer this for 10pt

Harrizon [31]

Round to the nearest thousands

8,276 = 8,000
2,451 = 2,000

8,000 + 2,000 = 10,000

answer
Maya traveled by plane about 10.000 miles

7 0

3 years ago

In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol

Julli [10]

Answer:

$0.071,1.928$

Step-by-step explanation:

Downtown Store North Mall Store

Sample size n 25 20

Sample mean $\bar{x}$ $9 $8

Sample standard deviation s $2 $1

$n_1=25\\n_2=20$

$\bar{x_1}=9\\ \bar{x_2}=8$

$s_1=2\\s_2=1$

$x_1-x_2=9-8=1$

Standard error of difference of means = $\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$

Standard error of difference of means = $\sqrt{\frac{2^2}{25}+\frac{1^2}{20}}$

Standard error of difference of means = $0.458$

Degree of freedom = $\frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}$

Degree of freedom = $\frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}$

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = $(x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)$

Confidence interval = $1-(2.0280)\times 0.458,1+(2.0280)\times 0.458$

Confidence interval = $0.071,1.928$

Hence Option A is true

Confidence interval is $0.071,1.928$

4 0

2 years ago