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3 years ago

Which of the following is closest to the value of x?

Mathematics

2 answers:

valina [46]3 years ago

5 0

By the Pythagorean theorem:

AC = √(AB²-BC²) = √(9²-4²) = √(81-16) = √65 ≈ 8
CD = √(BD²-BC²) = √(5²-4²) = √(25-16) = √9 = 3
x = AC - CD = 8 - 3 = 5

Answer: 5

avanturin [10]3 years ago

3 0

Hello, the closest to x is 6

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A= bh;<br> A = 28, h = 4

kozerog [31]

28= b(4)
divide both sides by 4. to leave the variable b alone
Answer: 7=b

8 0

3 years ago

In a manufacturing process, a machine produces bolts that have an average length of 5 inches with a variance of .08. If we rando

xz_007 [3.2K]

Answer:

$\bar X \sim N(\mu , \frac{\sigma}{\sqrt{n}})$

And replacing:

$\mu_{\bar X}= 5$

And the deviation:

$\sigma_{\bar X}= \frac{0.283}{\sqrt{5}}= 0.126$

And the distribution is given:

$\bar X \sim N(\mu= 0.08, \sigma= 0.126)$

Step-by-step explanation:

For this case we have the following info given :

$\mu= 5. \sigma^2 =0.08$

And the deviation would be $\sigma = \sqrt{0.08}= 0.283$

For this case we select a sample size of n = 5 and the distirbution for the sample mean would be:

$\bar X \sim N(\mu , \frac{\sigma}{\sqrt{n}})$

And replacing:

$\mu_{\bar X}= 5$

And the deviation:

$\sigma_{\bar X}= \frac{0.283}{\sqrt{5}}= 0.126$

And the distribution is given:

$\bar X \sim N(\mu= 0.08, \sigma= 0.126)$

4 0

3 years ago

Find the value of x and y

Inessa [10]

Answer: D. x=9√3; y=18

Step-by-step explanation:

This is a 30-60-90 special triangle, where we can use the rules to find the value of x and y. (For specific explanation, please look at the attachment below)

-----------------------------------------------------------------------------------------------------

<u>X value</u>

- The shortest side of the triangle that corresponds with [x] is 9 units. This is because it is half of the larger triangle's side length.

- Using the rules, the shortest side is x, then the second short side is x√3

- Substitute value in= x√3=(9)√3=9√3

Y value

- The shortest side of the triangle that corresponds with [x] is 9 units. This is because it is half of the larger triangle's side length.

- Using the rules, the shortest side is x, then the longest side is 2x

- Substitute value in= 2x=2(9)=18

Hope this helps!! :)

Please let me know if you have any questions

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3 years ago

In your own words, define each of the following terms.

Leya [2.2K]

A. Whole number- a number that is whole, with no decimals or extra signs or variables next to or part of it.

b. Digit- a number from 0-9 is a digit.

c. The position a number has in a larger number. ex. Hundreds, Tens, and One's place

d. A number rounded to a whole number. Either to a smaller or larger to make it whole and easier to understand.

e. Equals: Numbers that equal each other.

I hope this helps you.

Brainliest answer would be appreciated!

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AVprozaik [17]

angle x would end up being equal to 71 degrees.

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