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Ronch [10]
2 years ago
7

Please help, I need this quickly. It's an easy trigonometric question.

Mathematics
2 answers:
Jet001 [13]2 years ago
6 0

Answer:c x=13

Step-by-step explanation:

straight line =180

180-50=130

7x+3x=10x

130/10=13

So the answer is x=13

Mashutka [201]2 years ago
4 0
\bold{ANSWER:}
OPTION D: None of these

\bold{EXPLANATIONS:}

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Alex wants to test the reliability of “lie detector tests,” or polygraph tests. He performs a polygraph test on a random sample
VladimirAG [237]

The correct statement is test is reliable and authentic as the probability of no false positives is more than 0.5

Given that

H_o:P= 0.50\\\\H_1:P>0.50

Now following calculations to be done to reach out the conclusion

There is no false positive as

= 100 - 5.5

= 94.5%

\hat P =0.945, n = 12

Now

z = \frac{\hat P - P}{\sqrt\frac{P(1-P)}{n} }\\\\=\frac{0.945-0.5}{\sqrt\frac{0.5\times0.5}{12} }  \\\\= 3.08

So

P value = P(z >3.08) = 0.0010

Therefore we can conclude that test is reliable and authentic as the probability of no false positives is more than 0.5

Learn more about the polygraph test here:

brainly.com/question/3790493

4 0
3 years ago
How long is 3/4 of an hour
user100 [1]
3/4 of an hour is <span>45 minutes.</span>
5 0
3 years ago
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Find the number of faces, edges and vertices of the solid.​
JulsSmile [24]

Answer: 6 faces 12 edges 8 verticies

Step-by-step explanation:

7 0
3 years ago
5+5+10+10+20+15-13+17
Pavel [41]
95 is the right answer
7 0
2 years ago
Let f be a real-valued function defined on [0,∞), with the properties: f is
USPshnik [31]

im not sure this is right

g'(x) = 6b(-5x + 1)^5 (-5)

g'(x) = -30b(-5x +1)^5

g''(x) = -30b(5)(-5x + 1)^4 (-5)

g''(x) = 750b (-5x +1)^4

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when

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x = 15

8 0
2 years ago
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