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Advocard [28]
2 years ago
6

Do the ratios 5:3 and 13:8 form a proportion?

Mathematics
1 answer:
shepuryov [24]2 years ago
4 0

Answer:

  No

Step-by-step explanation:

Each ratio is irreducible, and they are different. Hence they are not the same value, so cannot be a proportion. A proportion is two equal ratios.

  5 : 3 = 40 : 24

  13 : 8 = 39 : 24 . . . . not the same as 40 : 24

_____

<em>Examples of proportions</em>

  5/3 = 40/24 . . . is a proportion

  13/8 = 39/24 . . . is a proportion

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Explain why 20 is not a square number.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 20 is about 4.472. Thus, the square root of 20 is not an integer, and therefore 20 is not a square number.

8 0
2 years ago
3. Suppose you are testing H0 : µ = 20 vs H1 : µ &gt; 20. The sample is large (n = 71) and the variance, σ 2 , is known. (a) Fin
LUCKY_DIMON [66]

Answer:

We reject the null hypothesis.

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 71

Population variance is known.

Level of significance, α = 0.08

z_{\text{stat}} = 1.56

The null and alternate hypothesis are:

H_{0}: \mu = 20\\H_A: \mu > 20

We use one-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} } = 1.56

Now, z_{critical} \text{ at 0.08 level of significance } = 1.41

Since,  

z_{stat} > z_{critical}

We fail to accept the null hypothesis and reject it and accept the alternate hypothesis.

7 0
3 years ago
The length of the remote car is 8 1/2 inches to nearest half inch and 8 1/4 to the nearest quarter inch. Which measurement is mo
dangina [55]

Answer:

Step-by-step explanation:

3 0
2 years ago
1. what is the exact demical value of 225/16?<br> 2. what is the exact decimal value of 77/12?
SOVA2 [1]

Answer:

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Hope that this helps!

7 0
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A large company that must hire a new president prepares a final list of five candidates, all of whom are equally qualified. Two
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Answer:

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The probability that one of the minority candidates is hired is P;

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3 years ago
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