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2 years ago

Please help!!!!!!! I’m stuck!

Mathematics

2 answers:

Elina [12.6K]2 years ago

7 0

notice the link above.... that's the relation of the sides in a triangle.

so, we start off by looking at the two smaller sides, nevermind the longest for a second.

on the second one listed there, 12, 5, 17, if we look at 12 and 5 only, how long can the last side be? well, can it be 17? well, 12+5 is 17, but only if 12 and 5 lie down flatly, only then we can put a 3rd side of 17 units long BUT, we're just going to end up with a flat-line, and lose the triangle, so, we can't have a longest leg of 17, because if we do, we don't have a triangle, just a flat-line, so no dice on that.

now checking the third one, 21, 7, 6, looking at 7 and 6, could be have a longest side of 21? wait a second!! 7+6 = 13, how in the dickens can we put a third side of 21 when 7 and 6 lying down flatly only give 13? so no dice there too.

anyhow the four one listed there is 9, 22, 11, again, looking at the small sides of 9 and 11, 9+11 = 20, how can we place a third side joining them that is 22 units long? no dice there either.

now looking at the first one listed, 10, 15, 24, we'll you already know.

vodomira [7]2 years ago

3 0

10 + 15 > 24

10 + 24 > 15

15 + 24 > 10

Answer

10 cm ,15 cm ,24 cm

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(x - 5)^2 + y^2 = 225/4,

or you could write it as (x - 5)^2 + y^2 = 56.25.

Step-by-step explanation:

The factor form is

(x - h)^2 + (y - k)^2 = r^2 where the center is (h, k) and r = the radius.

So we have:

(x - 5)^2 + (y - 0)^2 = r^2

As the point (-1, 9/2) is on the line:

(-1 - 5)^2 + (9/2)^2 = r^2

r^2 = 36 + 81/4

r^2 = 225/4.

So substituting for r^2:

(x - 5)^2 + (y - 0)^2 = 225/4

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3 years ago

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The confidence interval for mean of the "before-after" differences is $\fbox{(-0.4037,1.8037)}$

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Find the difference between the before pain and the after pain.

Difference = before-after

Kindly refer to the Table for the difference of between the before and after pain.

Sum of difference = $5.6$

Total number of observation = $8$

Mean of difference = $0.7$

Sample standard deviation $s$ = $1.3201$

Level of significance = $5\%$

Formula for confidence interval = $\left( \bar{X} \pm t_{n-1, \frac{\alpha}{2}\%} \frac{s}{\sqrt{n}} \right)$

confidence interval = $\left( 0.7 \pm t_{8-1, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)$

confidence interval = $\left( 0.7 \pm t_{7, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)$

From the t-table.

The value of $t_{7, \frac{5}{2}\%$ = $2.365$

Confidence interval = $( 0.7 \pm 2.365}\times \frac{1.3201}{\sqrt{8}}) \right)$

Confidence interval = $\left( 0.7 - 2.365}\times \0.4667,0.7 + 2.365}\times \0.4667) \right$

Confidence interval = $(0.7-1.1037,0.7+1.1037)$

Confidence interval = $\fbox{(-0.4037,1.8037)}$

The $95\%$ confidence interval tells us about that $95\%$ chances of the true mean or population mean lies in the interval.

Yes, the hypnotism appear to be effective in reducing pain as confidence interval include includes the positive deviation from the mean.

Learn More:

1. Learn more about equation of circle brainly.com/question/1506955

2. Learn more about line segments brainly.com/question/909890

Answer Details:

Grade: College Statistics

Subject: Mathematics

Chapter: Confidence Interval

Keywords:

Probability, Statistics, Speed dating, Females rating, Confidence interval, t-test, Level of significance , Normal distribution, Central Limit Theorem, t-table, Population mean, Sample mean, Standard deviation, Symmetric, Variance.

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