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marishachu [46]

4 years ago

12

Hannah and Anthony are siblings who have ages that are consecutive odd integers. The sum of their ages is 92. Which equations co

uld be used to find Hannah’s age,h, if she is the older sibling?

1 answer:

g100num [7]4 years ago

5 0

Answer:

the answer is 47

Step-by-step explanation:

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An environmentalist wants to find out the fraction of oil tankers that have spills each month. Suppose a sample of 836 tankers i

Alexxandr [17]

Answer:

<em>The 99% confidence interval for the population proportion of oil tankers that have spills each month.</em>

<em>(0.6489 , 0.7311)</em>

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given sample size 'n' = 836

Suppose a sample of 836 tankers is drawn. Of these ships, 577 did not have spills.

sample proportion

$p^{-} = \frac{x}{n} = \frac{577}{836} = 0.690$

<em>The 99% confidence interval for the population proportion is determined by</em>

<em></em> $(p^{-} - Z_{0.01} \sqrt{\frac{p(1-p)}{n} } , p^{-} + Z_{0.01} \sqrt{\frac{p(1-p)}{n} })$ <em></em>

<u><em>Step(ii)</em></u><em>:-</em>

<em>The Z- value = 2.576</em>

<em></em> $(0.690 - 2.576 \sqrt{\frac{0.690(1-0.690)}{836} } , 0.690 + 2.576 \sqrt{\frac{0.690(1-0.690)}{836} })$ <em></em>

<em>On calculation , we get</em>

<em>(0.690 - 0.0411 , 0.690 + 0.0411)</em>

<em>(0.6489 , 0.7311)</em>

<u><em>Final answer</em></u><em>:-</em>

<em>The 99% confidence interval for the population proportion of oil tankers that have spills each month.</em>

<em>(0.6489 , 0.7311)</em>

<em></em>

<em></em>

8 0

4 years ago

Use compatible numbers to estimate the quotient of 776÷28

kiruha [24]

The answer to ur division problem would be 27.6785714286<span>
</span>

4 0

3 years ago

70 divided by 10 - 3 + 1 = 11 where to put parentheses

Aleonysh [2.5K]

Answer:

70/(10-3)+1=11

Step-by-step explanation:

simplify

70/(7)+1=11

10+1=11

11=11

6 0

3 years ago

Read 2 more answers

A stock loses 10% of its value on Monday. On Tuesday it loses 20% of the value it had at the end of the day on Monday. What is t

Natalija [7]

Answer: The overall percent loss is 28%.

Step-by-step explanation: Given that a stock loses 10% of its value on Monday and on Tuesday it loses 20% of the value it had at the end of the day on Monday.

We are to find the overall percent loss in value from the beginning of Monday to the end of Tuesday.

Let x represents the value of a stock at the beginning of Monday.

Then, the value of the stock at the end of Monday is given by

$x-10\%\times x=x-\dfrac{10}{100}x=x-\dfrac{x}{10}=\dfrac{9}{10}x.$

So, the value of the stock at the beginning of Tuesday is $\dfrac{9}{10}x.$

Therefore, the value of the stock at the end of Tuesday is given by

$\dfrac{9}{10}x-20\%\times\dfrac{9}{10}x\\\\\\=\dfrac{9}{10}x-\dfrac{20}{100}\times\dfrac{9}{10}x\\\\\\=\dfrac{9}{10}-\dfrac{9}{50}x\\\\\\=\dfrac{36}{50}x\\\\\\=\dfrac{18}{25}x\\\\\\=x-\dfrac{7}{25}x\\\\\\=x-\dfrac{28}{100}x\\\\\\=x-28\%x.$

Thus, the overall percent loss is 28%.

4 0

3 years ago

jake performed an experiment to find out which type of chocolate melts the fastest, milk chocolate or dark chocolate. He tested

devlian [24]

What’s the question??

4 0

3 years ago