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3 years ago

6

How would you work out this equation? 4x+3y=-23 -2x-3y=25

1 answer:

tigry1 [53]3 years ago

7 0

You need to move your contents e.I. 3,4,5 and your variables e.I.2x, 5y, 2z first

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Both the P-value method and the critical value method use the same standard deviation based on the claimed proportion p, so they

erastova [34]

Answer:

Yes, it's also true about the confidence interval method.

Step-by-step explanation:

The confidence interval includes all the null hypothesis values for the population mean that would be accepted by the hypothesis test at the significance level of 5%. Now, it means this assumes a two-sided alternative.

Now, when testing claims about

population proportions, the critical method and the P-value method are equivalent due to the fact that they always produce the same result. Similarly, a conclusion based on a confidence interval estimate will be the same as a conclusion based on a hypothesis test.

So, Yes the confidence interval method and the P-value or critical methods will always lead to the same conclusion when the tested parameter is the standard deviation.

6 0

3 years ago

Find the perimeter of the figure. You must show all your work to receive full credit

Usimov [2.4K]

Answer:

32.2 units

Step-by-step explanation:

The perimeter of the figure = AB + BC + CD + DE + EF + FA

AB = |5 - 11| = 6 units

BC = |-8 - 0| = 8 units

$CD = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Let,

$C(11, 0) = (x_1, y_1)$

$D(6, -3) = (x_2, y_2)$

$CD = \sqrt{(6 - 11)^2 + (-3 - 0)^2}$

$CD = \sqrt{(-5)^2 + (-3)^2}$

$CD = \sqrt{25 + 9} = \sqrt{34}$

$CD = 5.8 units$ (nearest tenth)

DE = |6 - 4| = 2 units

$EF = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Let,

$E(4, -3) = (x_1, y_1)$

$F(0, -6) = (x_2, y_2)$

$EF = \sqrt{(0 - 4)^2 + (-6 -(-3))^2}$

$EF = \sqrt{(-4)^2 + (-3)^2}$

$EF = \sqrt{16 + 9} = \sqrt{25}$

$EF = 5 units$

$FA = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Let,

$F(0, -6) = (x_1, y_1)$

$A(5, -8) = (x_2, y_2)$

$FA = \sqrt{(5 - 0)^2 + (-8 -(-6))^2}$

$FA = \sqrt{(5)^2 + (-2)^2}$

$FA = \sqrt{25 + 4} = \sqrt{29}$

$FA = 5.4 units$ (nearest tenth)

Perimeter = 6 + 8 + 5.8 + 2 + 5 + 5.4

= 32.2 units

7 0

3 years ago

Anthony, Brian and Chris are hired for a job. If Anthony and Brian are working together they will finish the job in minutes. If

Tcecarenko [31]

Answer:

12.5

Step-by-step explanation:

Let individual time taken by Anthony, Brian and Chris = t1 , t2 , t3 respectively

So, total time taken by A & B = 1 / t1 + 1 / t2 , lets suppose = 10 {i}

Total time taken by A & C = 1 / t1 + 1 / t3 , lets suppose = 15 {ii}

Total time taken by B & C = 1 / t2 + 1 / t3 , lets suppose = 20 {iii}

From {i} , 1 / t2 = 10 - 1 / t1

From {ii} 1 / t1 = 15 - 1 / t3

By above two eqtns , 1 / t2 = 10 - (15 - 1 / t3)

1 / t2 = 1 / t3 - 5

Putting in {iii} , 1 / t3 - 5 + 1 / t3 = 20

2 / t3 = 25

t3 = 12.5

5 0

3 years ago

– (9 – 5c) + 18 – c = 37 please show your work.

love history [14]

-9 + 5c + 18 - c = 37

4c + 9 = 37
4c = 37 - 9

4c = 28

4c/4 = 28/4

c = 7

hope this helps

4 0

3 years ago

Read 2 more answers

Answer the photo below thanks <br> Please explain your answer

Assoli18 [71]

Answer:

Step-by-step explanation:

so remember that volume of rectangular prism is

base X width X height

=10.4X5X8=416

add units

416mm

pl give brainly

6 0

3 years ago