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3 years ago

Can someone help me solve this

Mathematics

1 answer:

alexira [117]3 years ago

8 0

Answer:

Step-by-step explanation:

First=4

Second=1 time

Third=3 turning points

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HELP image is provided

Hitman42 [59]

Answer:

yes

Step-by-step explanation:

angles z and b both have 2 congruent lines

angle y and a have one congruent line

and lines CA and XY have a congruent tick mark

5 0

2 years ago

Is 14 a solution for the equation -5 + 2x = 23? Explain.

Mila [183]

Answer:

Yes because after solving the equation, x does indeed equal 14.

Step-by-step explanation:

-5 + 2x = 23

2x = 23 + 5

2x = 28

x = 14

8 0

3 years ago

Read 2 more answers

Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

8 0

3 years ago

Defining Terms

____ [38]

Answers: line DB

7 0

3 years ago

A⋅a⋅c⋅c =

Naddik [55]

6+3 =9

The answer is 9

3 0

3 years ago

Read 2 more answers