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2 years ago

20 POINTS

Mathematics

2 answers:

dmitriy555 [2]2 years ago

6 0

Answer:

Step-by-step explanation:

Its correct corrdenates are -8, 1 and 5, -3

serious [3.7K]2 years ago

4 0

Answer:

Its correct coordinates are -8, 1 and 5, -3

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The square root of 41 is between what perfect square

spayn [35]

Answer:

36 and 49

Step-by-step explanation:

5 0

3 years ago

A large on-demand video streaming company is designing a large-scale survey to determine the mean amount of time corporate execu

Diano4ka-milaya [45]

Answer:

$n=(\frac{2.262(3)}{0.25})^2 =736.79 \approx 737$

So the answer for this case would be n=737 rounded up to the nearest integer

Step-by-step explanation:

We have the following info given:

$\bar X = 12$ the sample mean

$s = 3$ the sample deviation

$n = 10$ represent the sample size

The degrees of freedom are given by:

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

The margin of error is given by this formula:

$ME=t_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =0.25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{t_{\alpha/2} s}{ME})^2$ (5)

The confidence level is 95% and the critical value for this case would be given by $t_{\alpha/2}=2.262$ , replacing into formula (5) we got:

$n=(\frac{2.262(3)}{0.25})^2 =736.79 \approx 737$

So the answer for this case would be n=737 rounded up to the nearest integer

7 0

2 years ago

If ABCD is a rectangle, calculate x as a function of α

Yanka [14]

Answer:

Step-by-step explanation:

The length of this triangle is 10 squares

and the width is 4 squares

The diagonals divide the rectangle into four triangles

These traingles are isoceles

Each two triangles facing each others are identical

<B = 90 degree

B = alpha + Beta

Let Beta be the angle next alpha

The segment that is crossing Beta is its bisector since it perpendicular to the diagonals wich means that:

Beta = 2x

Then B = alpha + 2x

90 = alpha +2x

90-alpha = 2x

x = (90-alpha)/2

4 0

2 years ago

Read 2 more answers

The wholesale cost of a pair of PUMA sneakers is $28. Academy Sporting Goods sells the sneaker for 74.99. Rounded to the nearest

Evgesh-ka [11]

<u>Answer:</u>

$167.8%$

The answer is also right here in this link: brainly.com/question/20831002

8 0

2 years ago

Factor 54c–9d. Write your answer as a product with a whole number greater than 1

lisov135 [29]

Answer:

9(6c - d)

Step-by-step explanation:

$54c - 9d \\ = 9 \times 6c - 9d \\ = 9(6c - d) \\$

5 0

2 years ago