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Softa [21]
3 years ago
13

I need help with number 1

Mathematics
1 answer:
Yakvenalex [24]3 years ago
6 0
2:4
4:8
5:10
200:400
This is because if you divide each ratio you get 1/2
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Which is greater pls help 108.505 108.5? pls help!!
Citrus2011 [14]

Answer:

108.505

Step-by-step explanation:

Let's talk money for just a second. Which would you rather have 20 dollars or 20.32      20dollars and 32 cents?

Isn't 20.32 bigger than 20.

You should say yes.

If that is true, then 108.505 should be larger than 108.5 not by much, but still larger.

4 0
3 years ago
FORTY WHOLE POINTS FOR U AND THANKS AND BRAINLIEST AND 5 STARS PLEASE I NEED THIS IM CONFUSED IDK SLOPE IM NOT GOOD AT MATH I NE
loris [4]

Answer:  b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The claim that 40% of those persons who retired from an industrial job before the age of 60 would return to work if a suitable j
Bad White [126]

Answer:

The p-value of the test is of 0.1922 > 0.02, which means that there is not significant evidence to reject the null hypothesis, that is, there is not significant evidence to conclude that the proportion is of less than 40%.

Step-by-step explanation:

Test if the proportion is less than 40%:

At the null hypothesis, we test if the proportion is of at least 0.4, that is:

H_0: p \geq 0.4

At the alternative hypothesis, we test if the proportion is of less than 0.4, that is:

H_1: p < 0.4

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.4 is tested at the null hypothesis:

This means that \mu = 0.4, \sigma = \sqrt{0.4*0.6}

74 out of the 200 workers sampled said they would return to work

This means that n = 200, X = \frac{74}{200} = 0.37

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.37 - 0.4}{\frac{\sqrt{0.4*0.6}}{\sqrt{200}}}

z = -0.87

P-value of the test and decision:

The p-value of the test is the probability of finding a sample proportion below 0.37, which is the p-value of z = -0.87.

Looking at the z-table, z = -0.87 has a p-value of 0.1922.

The p-value of the test is of 0.1922 > 0.02, which means that there is not significant evidence to reject the null hypothesis, that is, there is not significant evidence to conclude that the proportion is of less than 40%.

7 0
2 years ago
What is 3/5 and 1/2 by using common denominator
gulaghasi [49]

6/10 and 5/10

The common denominator is 10

3 0
3 years ago
Read 2 more answers
1 &amp; 2
sveta [45]
The value of x is 13 for the first attachment. 
5 0
3 years ago
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