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kolezko [41]
3 years ago
5

Please need help on this one not even sure on this

Mathematics
1 answer:
zlopas [31]3 years ago
7 0

Answer:

I‘m pretty sure its a special right triangle, basically a 30, 60, 90 triangle. I checked with the formula and it’s correct. So the angle W is wither a 60 Degree or 30 degree and I‘m on the side of 30 degrees.

So I’m pretty sure its 30 degree.

The formuda is the hypotenuse is 2x and the (a) (3 in this case) is x. The 5 would come out as the formula 3\sqrt{3}. Now we know the sides, 3, 5 and 6 so we just plug it in and solve for the square root and it equals to ABOUT 5.

I’m not sure if I’m correct but I’m not confident.

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PLEASE HELP! THIS IS A BIG PART OF MY GRADE AND IS DUE RLLY SOON. I DONT WANNA FAIL, I WILL GIVE BRAINLIEST.
sweet [91]

Answer:

8931

Step-by-step explanation:

                     1 1 1

21 x 18 x 13 = 4914

16 x (18x13) = 3744

        13 x 21 = 273

                      -------

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Hope this helps  :|

(I am not 100% Sure, you should double check)

3 0
4 years ago
Construct a 95% confidence interval for the population mean, μ. Assume the population has a normal distribution. A random sample
GuDViN [60]

Answer: (628.48,\ 661.52)

Step-by-step explanation:

Given : Sample size : n=16 , which is a small sample (, 30) so we use t-test.

Sample mean : \overline{x}=645 \text{ hours}

Standard deviation : \sigma = 31 \text{ hours}

Significance level : \alpha=1-0.95=0.05

Critical value : t_{n-1,\alpha/2}=2.131

The confidence interval for population mean is given by :-

\overline{x}\pm t_{n-1,\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=645\pm(2.131)\dfrac{31}{\sqrt{16}}\\\\\approx645\pm16.52\\\\=(645-16.52,\ 645+16.52)\\\\=(628.48,\ 661.52)

Hence, a 95% confidence interval for the population mean \mu = (628.48,\ 661.52)

6 0
3 years ago
Rewrite the inequality with zero on one side and one rational expression on the other. +4>3 x = 2 What is the first step? add
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Answer:

part 1 is a part 2 is c on edge 2021

Step-by-step explanation:

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ololo11 [35]

Answer:

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Step-by-step explanation:

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