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bezimeni [28]
3 years ago
12

In △DEF, DE = 5 and m∠F=55. Find FE.

Mathematics
2 answers:
Marizza181 [45]3 years ago
7 0
Check the picture below.

make sure your calculator is in Degree mode.

Elden [556K]3 years ago
3 0
SOH CAH TOA

tan(55°) = 5/(FE)
FE = 5/tan(55°)
FE = 3.5
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Step-by-step explanation:

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Answer:

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5 0
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Given the information below, write the conclusion in context. 1. H0 : The proportion of defective batteries = 0.02 2. HA : The p
Marizza181 [45]

Answer:

z = -1.23

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p_v = P(z

And for this case using a significance level of \alpha=0.05 ,0.1 we see that the p value is larger than the significance level so then we can conclude that we FAIL to reject the null hypothesis and we don't have enough  evidence to conclude that the true proportion is less than 0.02

Step-by-step explanation:

For this case we want to test the following system of hypothesis:

Null hypothesis: p =0.02

Alternative hypothesis: p < 0.02

The statistic for this case is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

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And we can calculate the p value with the following probability taking in count the alternative hypothesis:

p_v = P(z

And for this case using a significance level of \alpha=0.05 ,0.1 we see that the p value is larger than the significance level so then we can conclude that we FAIL to reject the null hypothesis and we don't have enough  evidence to conclude that the true proportion is less than 0.02

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3 years ago
Which of the following represents "two times the sum of a number and fifteen is equal to six times the number"?
Ivanshal [37]
Answer: 2(N+15) = 6N

======

We let N be the number.
Then, "<span>the sum of a number and fifteen" would be

    N + 15

Two times this sum would give us

   2(N+15) ... you must distribute!

This must be equal to six times the number. Six times the number is 6N, therefore

   2(N+15) = 6N</span>
6 0
3 years ago
Read 2 more answers
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