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FinnZ [79.3K]
3 years ago
6

Urgent! A tower that is 103 feet tall casts a shadow 123 feet long. Find the angle of elevation of the sun to the nearest degree

.

Mathematics
1 answer:
Trava [24]3 years ago
7 0

Answer:

39.9 rounded to 40 degrees

Step-by-step explanation:

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How can you express 1/4 as a percent?
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Step-by-step explanation:

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A recent study focused on the number of times men and women send a Twitter message in a day. The information is summarized here.
anastassius [24]

Answer:

There is no difference in the mean number of times men and women send a Twitter message in a day

Zmen = 0.4

Zwomen = 0.2

Step-by-step explanation:

Null hypothesis: There is no difference in the mean number of times men and women send a Twitter message in a day

Alternate hypothesis: There is a difference in the mean number of times men and women send a Twitter message in a day

Z = (sample mean - population mean)/(sd ÷ √n)

Zmen = (25 - 23)/(5÷√1) = 2/5 = 0.4

Zwomen = (30 - 28)/(10÷√1) =2/10= 0.2

For a two tailed test, at 0.01 significance level, the critical value is 2.576

0.2 and 0.4 falls within the region bounded by -2.576 and 2.576, so we fail to reject the null hypothesis

There is no difference in the mean number of times men and women send a Twitter message in a day

5 0
3 years ago
jamie wants to run a total of 9 miles thid week. so far, she has run 4 5/8 miles. use the equation 4 5/8 + r = 9​. please help m
Sladkaya [172]

Answer:

r = 4 3/8

Step-by-step explanation:

5 0
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