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Alla [95]
3 years ago
9

20/12=15/x find x plz help

Mathematics
2 answers:
Lemur [1.5K]3 years ago
4 0

Answer:

x=9

Step-by-step explanation:

We have: \frac{20}{12}=\frac{15}{x}

First, we can simplify 20/12 by 4

\frac{5}{3}=\frac{15}{x}

this is a proportion, so we can cross multiply (multiply 5 by x and 3 by 15)

5x=45

divide by 5

x=9

Hope this helps!

Ganezh [65]3 years ago
3 0

Answer:

x = 9

Step-by-step explanation:

To find x, we first have to solve the equation given in the question:

\frac{20}{12} = \frac{15}{x}

20x = 15 \cdot 12

x = \frac{180}{20}

x = 9

Therefore, x = 9.

Hope this helped!

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For a game show, a contestant will be asked to select three months at random. What is the probability that a contestant will sel
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Im pretty sure the answer is 3/12 why? Because your selection is 12 because there are 12 months in a year the way you get three is because of march July and November...hoped this helped
4 0
3 years ago
Thomas went to the store to buy video games for $13.50 each and controllers that cost $55 each and controllers. the total amount
Goshia [24]

Answer:6 games

Step-by-step explanation:

Thomas spent a total of 136 dollars so you subtract 55 from 136 and divide by 13.50 to get 6.

3 0
3 years ago
Last Friday DeShawn had $7. Over the weekend he received some money for cleaning the attic. He now has $21. How much money did h
hodyreva [135]

Answer:

he earned 14 dollars

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
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
Please help, this is due tonight
dolphi86 [110]

Answer:

It's B

Step-by-step explanation:

Just divide y by x. For example: 6.6 / 6 = 1.1. This would be B! Hope this helps!

6 0
3 years ago
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