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Oksanka [162]
3 years ago
7

A City has a population of 360,000 people, suppose each year the population grows by 3% what will the population be after five y

ears?
Mathematics
2 answers:
cricket20 [7]3 years ago
7 0

Answer:

10800*5=54000

Step-by-step explanation:

juin [17]3 years ago
7 0

370800

Step-by-step explanation:

360000*3%

=10800

360000+10800

370800

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5 times marys age is the same as 28 less than 7 times her age. Find her age
Gnom [1K]

setup a simple algebraic equation and solve.

5x = 7x-28

-5x   -5x

0=2x-28

+28  +28

28=2x

Now divide both sides by 2 and you get that she is 14

3 0
3 years ago
Read 2 more answers
In analyzing the city and highway fuel efficiencies of many cars and trucks, the mean difference in fuel efficiencies for the 60
Olegator [25]

Answer:

7.38-1.96\frac{2.51}{\sqrt{601}}=7.18    

7.38+1.96\frac{2.51}{\sqrt{601}}=7.58    

For this case the confidence interval is given by :

7.18 \leq \mu \leq 7.58

Step-by-step explanation:

Data provided

\bar X=7.38 represent the sample mean for the fuel efficiencies

\mu population mean

s=2.51 represent the sample standard deviation

n=601 represent the sample size  

Confidence interval

The formula for the confidence interval of the true mean is given by:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom for this case is given by:

df=n-1=601-1=600

The Confidence level for this case is 0.95 or 95%, and the significance level \alpha=0.05 and \alpha/2 =0.025 and the critical value is given by t_{\alpha/2}=1.96

Replcing into the formula for the confidence interval is given by:

7.38-1.96\frac{2.51}{\sqrt{601}}=7.18    

7.38+1.96\frac{2.51}{\sqrt{601}}=7.58    

For this case the confidence interval is given by :

7.18 \leq \mu \leq 7.58

8 0
3 years ago
What is the Gcf for 12,54
JulsSmile [24]
I believe it’s 6

Hope this helps you :))
4 0
3 years ago
Read 2 more answers
The newborn weights 7 pounds and is 21 inches long. What is the ratio of weight to length?​
Nikolay [14]

Answer:

1:3

Step-by-step explanation:

The required ratio will be ,

7:21

= 1 :3

4 0
3 years ago
Read 2 more answers
What is the factor of 9x2-16?
Grace [21]

Answers:

9×2-16

18-6

= 2

7 0
3 years ago
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