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KengaRu [80]
3 years ago
7

Geometry Homework ( SOH CAH TOA ) PLEASE HELP!!

Mathematics
1 answer:
Hoochie [10]3 years ago
3 0

Answer:

Question 3:

AC = 3 yd.

m∠B = 37°

m∠C = 53°

Question 4;

GH = 8 km.

m∠H = 62°

m∠I = 28°

Step-by-step explanation:

Question 3:

The length AC

AC = 5*sin B.

And the angle B

\boxed{\angle B=cos^{-1}(\frac{4}{5} )=36.87^o\approx 37^o.}

Therefore

\boxed{AC = 5*sin(37^o)= 3yd}

And the angle C:

\boxed{\angle C=sin^{-1}(\frac{4}{5} )=53.13^o \approx 53^o}

Question 4:

The side GH

GH =17\:sin(I)

The angle I is

\boxed{\angle I=cos^{-1}(\frac{15}{17} )=28.07^o\approx 28^o}

Therefore,

\boxed{GH =17\:sin(I)=17sin(28^o)=8km}

And the angle H:

\boxed{\angle H=sin^{-1}(\frac{15}{17} )=61.927^o\approx 62^o}

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A recent survey of 128 high school students indicated the following information about release times from school.
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Answer:

A) Interval estimate for those that want to get out earlier = (35%) ± (4%) = (31%, 39%)

Interval estimate for those that want to get out later = (39%) ± (4%) = (35%, 43%)

B) The group that wants to get out of school earlier can win after all the votes are counted if their true population proportion takes on a value that is higher than the closest true population proportion (for the group that wants to get out of school later)

That is, in the (31%, 39%) and (35%, 43%) obtained in (a), a range of (35.1%, 39%) and (35%, 38.9%) show how possible that the group that wants to get out of school earlier can win after all the votes are counted.

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The Interval estimate for the proportion is basically an interval of range of values where the true population proportion can be found with a certain level of confidence.

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ii) those that want to get out later.

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Interval estimate for those that want to get out earlier = (35%) ± (4%) = (31%, 39%)

ii) Sample proportion of those that want to get out later = 39%

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Interval estimate for those that want to get out later = (39%) ± (4%) = (35%, 43%)

b) Explain how it would be possible for the group that wants to get out of school earlier to win after all the votes are counted.

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