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Lorico [155]
3 years ago
5

20 POINTS HURRY PLEASE

Mathematics
2 answers:
grin007 [14]3 years ago
7 0

right triangle

Step-by-step explanation:

i already did this one so this is the correct answer your welcome well this is her sister i took her phone but you may get it correct

irina1246 [14]3 years ago
4 0

Answer:

Not a right-angle triangle

Step-by-step explanation:

15² = 12² + 8²

225 = 144 + 64

225 = 208 is a false statement

So not a right angle triangle

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Each point on the coordinate plane has an address called
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I do not understand what to do , more explicitly sorry :(
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3 years ago
36.00x0.07 show explanation
makkiz [27]

Answer: 2.52

Step-by-step explanation: 36.00x0.07

36.00 is the same as 36

so, 36x0.07=2.52

5 0
2 years ago
Suppose that a random sample of 10 adults has a mean score of 62 on a standardized personality test, with a standard deviation o
aniked [119]

Answer:

The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{4}{\sqrt{10}} = 2.08

The lower end of the interval is the sample mean subtracted by M. So it is 62 - 2.08 = 59.92

The upper end of the interval is the sample mean added to M. So it is 62 + 2.08 = 64.08.

The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.

5 0
2 years ago
18. The sum of 10 times a number and fifteen is added to eleven times the same number.​
sergij07 [2.7K]

Answer:

Sum of 10 times a number and fifteen is added to eleven times the same number is therefore: 10x + 15 + 11x = 21x + 15

Step-by-step explanation:

4 0
3 years ago
I need help please thanks for helping
tresset_1 [31]
I cant see on my
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3 years ago
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