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3 years ago

Write 2 ratios that are equivalent to 5/6

Mathematics

1 answer:

JulsSmile [24]3 years ago

4 0

Answer: So, 12 : 30 and 2 : 5 are the two equivalent-ratios of 6 : 15.

Step-by-step explanation:

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Is the following equation an example of direct variation? y equals 5 x

matrenka [14]

Yes it is a direct variation

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3 years ago

Read the problem below and find the solution.

dybincka [34]

Answer:

440 ft

Step-by-step explanation:

Ball dropped and we start count from that moment:

160 ft down
80 ft up and down
40 ft up and down
20 ft up and down, end

Total distance:

160 + 80*2 + 40*2 + 20*2 = 440 ft

7 0

3 years ago

Please answer this for me

marysya [2.9K]

216 square inches
Divide 24 by 40. Then multiply that by 15. You get 9. Multiply 9 and 24

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3 years ago

A news station would like to conduct an exit poll to determine the likelihood that a highly debated amendment will receive enoug

vladimir1956 [14]

Answer:

The expression is $n = (\frac{1.645*0.5}{0.03})^2$

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a p-value of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

What expression would give the smallest sample size that will result in a margin of error of no more than 3 percentage points?

We have to find n for which M = 0.03.

We have no prior estimate for the proportion, so we use $\pi = 0.5$ . So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.645\sqrt{\frac{0.5*0.5}{n}}$

$0.03\sqrt{n} = 1.645*0.5$

$\sqrt{n} = \frac{1.645*0.5}{0.03}$

$(\sqrt{n})^2 = (\frac{1.645*0.5}{0.03})^2$

$n = (\frac{1.645*0.5}{0.03})^2$

The expression is $n = (\frac{1.645*0.5}{0.03})^2$

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3 years ago

What is the next term in the sequence 4,-12,36,-108 use inductive reasoning

aksik [14]

The is answer is 324. The previous number is multiplied by -3.

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4 years ago