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2 years ago

Find arc JK BRAINLIEST,POINTS,THANKS AND RATING GIVEN!!!

Mathematics

1 answer:

nikklg [1K]2 years ago

8 0

Answer: 164
x = 19

Explanation: The equation you would make is:

250 = 7x + 117.

Or you could also do :

125 = 1/2 ((7x + 31) + (86)) ; they both come out as the same answer.

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The mean number of hours of part-time work per week for a sample of 317 teenagers is 29. If the margin of error for the populati

Shtirlitz [24]

Answer:

The degrees of freedom are given by:

$df=n-1=317-1=316$

And replaicing we got:

$29-2.1=26.9$

$29+2.1=31.1$

The 95% confidence interval would be between 26.9 and 31.1

Step-by-step explanation:

Information given

$\bar X= 29$ represent the sample mean

$\mu$ population mean

s represent the sample standard deviation

$ME= 2.1$ represent the margin of error

n represent the sample size

Solution

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

And this formula is equivalent to:

$\bar X \pm ME[/te]xThe degrees of freedom are given by:[tex]df=n-1=317-1=316$

And replaicing we got:

$29-2.1=26.9$

$29+2.1=31.1$

The 95% confidence interval would be between 26.9 and 31.1

7 0

4 years ago

Find the volume of a rectangular solid with the given dimensions: length 8 feet, width 17 feet, height 10 feet. What is the volu

Alex787 [66]

Answer: 1360 cubic meter

Step-by-step explanation:

Volume of solid= Length*width*height

=8*17*10

=1360 cubic meter

4 0

3 years ago

Graph the line that passes through the two points then find the slope of the line (-3,-3)(1,1)

zheka24 [161]

Answer:

i think its -3

Step-by-step explanation:

8 0

3 years ago

Christina's bird feeder holds 7/10 of a cup of birdseed. Christina is filling the bird feeder with a scoop that holds 1/10 of a

AveGali [126]

Answer:

7 scoops

Step-by-step explanation:

hope this helps

5 0

3 years ago

The tallest man ever recorded was Robert Wadlow, who was 272 cm tall. The tallest woman on record was Zeng Jinlian. Her height w

Zanzabum

Hello!

Here we just need to find .91 of 272cm to find her height,

so we take .91percent * 272cm= 247.52 rounded to nearest cm is 248cm tall

hope this helps. any questions please ask! thank you!

3 0

3 years ago

Read 2 more answers