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3 years ago

The question in the image

Mathematics

2 answers:

Korvikt [17]3 years ago

8 0

Answer:

Answer : x=30°

Step-by-step explanation:

weeeeeb [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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A parachutists rate during the freefall reaches 189 km/h. What is the rate in meters per second? At this rate how many meters wi

Lera25 [3.4K]

1 km = 1000m
1 hr = 3600 s

189 km/h
189 * 1000 / 3600 m/s
189*5/18 m/s
945/18 m/s
315/6 m/s
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52.5 m/s

in 10 s
52.5*10
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2 years ago

Factoring polynomials <br> -12n2-11n=-15

bagirrra123 [75]

Answer:

n=3/4,-5/3

Step-by-step explanation:

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2 years ago

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3 years ago

A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening night midni

Alex17521 [72]

Answer: It is believed that exactly 20% of Evergreen Valley college students attended the opening night midnight showing of the latest harry potter movie.

Step-by-step explanation:

Since we have given that

n = 84

x = 11

So, $\hat{p}=\dfrac{x}{n}=\dfrac{11}{84}=0.13$

p = 0.20

So, hypothesis:

$H_0:p=\hat{p}\\\\H_a:\hat{p}$

so, test statistic value would be

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.13-0.20}{\sqrt{\dfrac{0.2\times 0.8}{84}}}\\\\z=-1.604$

At 1% level of significance, critical value would be

z= 2.58

Since 2.58>-1.604

So, We will accept the null hypothesis.

Hence, It is believed that exactly 20% of Evergreen Valley college students attended the opening night midnight showing of the latest harry potter movie.

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2 years ago

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yuradex [85]

8 is the digit in the hundredth place. Note: it goes decimal tenth hundredth thousandth.

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3 years ago

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