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Elenna [48]
3 years ago
15

9 is 3% of what number? Which proportion matches this information?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
4 0

Answer:

B

Step-by-step explanation:

3% = 3/100

So we can eliminate the first answer.

The proportions have to match each other so the number nine should be above and thus the x has only the option of being under it.

As a result, we eliminate the third answer and remain with one reasonable answer

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Someone pls helpppppppp
frutty [35]

Answer:

well the first one is x^3 y^2 z 7root x^2 z

5 0
3 years ago
PLZ IN THIS ASAPP!!! ILL GIVE YOU BRAINLIST!!!
Anastaziya [24]

Answer:

14

Explanation:

The constant of proportionality is 14, when we divide all of the y values by all of the x values, we get 14.

hope this helps!

8 0
2 years ago
The mean income per person in the United States is $44,500, and the distribution of incomes follows a normal distribution. A ran
Artist 52 [7]

Answer:

We conclude that the residents of Wilmington, Delaware, have higher income than the national average

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $44,500

Sample mean, \bar{x} = $52,500

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, s =  $9,500

a) First, we design the null and the alternate hypothesis

H_{0}: \mu = 44,500\text{ dollars}\\H_A: \mu > 44,500\text{ dollars}

We use one-tailed(right) t test to perform this hypothesis.

c) Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{52500 - 44500}{\frac{9500}{\sqrt{16}} } = 3.37

b) Rejection rule

If the calculated t-statistic is greater than the t-critical value, we fail to accept the null hypothesis and reject it.

Now,

t_{critical} \text{ at 0.05 level of significance, 15 degree of freedom } = 1.753

Since,                    

t_{stat} > t_{critical}

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis. We conclude that the residents of Wilmington, Delaware, have higher income  than the national average

5 0
3 years ago
I need some help please
Anvisha [2.4K]

Answer:

10x - 5

Step-by-step explanation:

Perimeter is found by adding up all the side lengths.

(2x-4) + (5x+6) + (3x-7) = 10x - 5

5 0
3 years ago
What is 8/12 in simlplifyed
julsineya [31]

Answer:

2/3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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