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Alex17521 [72]
3 years ago
11

Express cos I as a fraction in simplest terms

Mathematics
2 answers:
makkiz [27]3 years ago
6 0
It is 8/17 that’s the answer
quester [9]3 years ago
3 0
Cos I = 16/34 = 8/17
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Marina86 [1]
I think it might be 50? unless you meant 2/100, which is 0.02
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2 years ago
In need of help with functions in Algebra 2! Thank you!
Damm [24]

Answer: The answer should be B

6 0
2 years ago
Which expression should you simplify to find the 90% confidence interval,
bogdanovich [222]

Answer:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.2870.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is \hat p=0.45

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025.

And the critical value is:z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the true population proportion is interest is given by this formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

Replacing the values provided we got:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287\\\\0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

5 0
3 years ago
write an equation to find the number of students in mr.boggs homeroom if the total number of stdents is 90
prohojiy [21]

The number of students in Mr. Boggs’s homeroom is equal to b. Add the total number of students in each class and set it equal to 90.

90 = b + 1.5(b + 2) + 15 + (2b – 9)

Use the Distributive Property, and collect like terms. 90 = b + 1.5b + 3 + 15 + 2b – 9

90 = 4.5b + 9

4 0
3 years ago
Are the 2 triangles congruent? If so, what postulate did you use?
jok3333 [9.3K]

Answer:

Step-by-step explanation:

4

3 0
3 years ago
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