3 years ago

In the following figure, m AC = 64° and m BD = 130°. What is measure AEB?

Mathematics

1 answer:

Salsk061 [2.6K]3 years ago

6 0

Answer: 32°

Step-by-step explanation: see photo

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Shoot two arrows worth 16 points each (32 points)

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2 years ago

A rectangle ahs a long side of a length 8.5 cm its perimeter is 24cm work out the length of the shorter side

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Answer:

Width (length of shorter side) = 3.5 cm.

Step-by-step explanation:

L = 8.5 cm

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2(8.5+W) = 24

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3 years ago

The current temperature of 8"F below zero is 21°F below the high temperature of the day. What is the high temperature for the da

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Step-by-step explanation:

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2 years ago

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 3%

andre [41]

Answer: a) 683 b) 1067

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$p\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}$

a) Given : Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}}=\pm1.96$

Margin of error : $E=0.03$

Formula to calculate the sample size needed for interval estimate of population proportion :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.2(0.8)(\dfrac{1.96}{0.03})^2=682.951111111\approx683$

Hence, the required sample size would be 683 .

b) If no estimate of the sample proportion is available then the formula to calculate sample size will be :-

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.96}{0.03})^2=1067.11111111\approx1067$

Hence, the required sample size would be 1067 .

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3 years ago

so i just started modeling and two step inequalities and my question is 62°f and it drops 2 degrees every hour .How many hours w

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It was 11 hours because if the temperature drops 2 degrees after every hour, after 11 hours, the temperature would have dropped 22 degrees and 62 - 22 = 40.

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3 years ago

Read 2 more answers