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mihalych1998 [28]
4 years ago
14

Are the ratios 18:9 and 4:3 equivalent?

Mathematics
2 answers:
dimulka [17.4K]4 years ago
8 0
No
18/4 is 4.5
9/3 is 3
So ur answer is no
Rasek [7]4 years ago
3 0

Answer:

No. (see below)

Step-by-step explanation:

If you match up the ratios like this:

18 : 9

4 : 3

Matching the two numbers (one on top of another, since they correspond to each other), you can see that these are not equivalent.

Here's why:

The top ratio is 18 to 9, which can be represented by 18 total people to 9 girls in the amount of total people.

We know that the number of boys will also be 9 because 9 is half of 18.

Let's look at the second ratio:

This can be represented by 4 total people to 3 girls in the amount of total people.

4 - 3 = 1

So there would be only 1 boy. Meaning that they're not equal because 1 is <em>not</em> half of 4. It would only be 1/4.

1/4 ≠ 1/2

If we make them similar denominators, you can <em>really</em> see it:

1/4 ≠ 2/4

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What is the solution to the equation below? √ x-5 = x-11
Anuta_ua [19.1K]

Answer:

x= 14

Step-by-step explanation:

sqrt( x-5) = x-11

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6 0
3 years ago
From a sample with nequals24​, the mean number of televisions per household is 4 with a standard deviation of 1 television. Usin
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Answer:

At least 18 of the households have between 2 and 6 televisions.

Step-by-step explanation:

Chebyshev Theorem

The Chebyshev Theorem can also be applied to non-normal distribution. It states that:

At least 75% of the measures are within 2 standard deviations of the mean.

At least 89% of the measures are within 3 standard deviations of the mean.

An in general terms, the percentage of measures within k standard deviations of the mean is given by 100(1 - \frac{1}{k^{2}}).

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By Chebyshev's Theorem, at least 75% of the measures are within 2 standard deviations of the mean.

Out of 24

0.75*24 = 18

At least 18 of the households have between 2 and 6 televisions.

6 0
3 years ago
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