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Rainbow [258]
3 years ago
15

What is 670,130,000 km in scientific notation

Mathematics
2 answers:
Romashka [77]3 years ago
5 0

To write a number in scientific notation, first write a decimal point in the number so that there is only one digit to the left of the decimal point.

Next, count the number of places the decimal point would need to move to get back to the original number.

The exponent would be positive 5 because we would need to move the decimal point to the right to get back to the original number.

Lastly, we can drop the zeroes that are at the end of our number.

MrRa [10]3 years ago
4 0

Answer:

6.7013x10⁸ km

Step-by-step explanation:

670,130,000 km

=6.7013x10⁸ km

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In 2008, the average household debt service ratio for homeowners was 13.2. The household debt service ratio is the ratio of debt
ankoles [38]

Answer:

t=\frac{13.88-13.2}{\frac{3.14}{\sqrt{44}}}=1.436    

df=n-1=44-1=43  

p_v =P(t_{(43)}>1.436)=0.079  

We see that the p value i higher than the significance level so then we FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly higher than 13.2 *the value of 2008 ).

Step-by-step explanation:

Information given

\bar X=13.88 represent the sample mean

s=3.14 represent the sample standard deviation

n=44 sample size  

\mu_o =13.2 represent the value that we want to test

\alpha=0.05 represent the significance level

t would represent the statistic (variable of interest)  

p_v represent the p value for the test

Hypothesis to test

We want to conduct a hypothesis in order to check if the true mean has increased from 2008 , and the system of hypothesi are:  

Null hypothesis:\mu \leq 13.2  

Alternative hypothesis:\mu > 13.2  

The statistic for this case is:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Calculating the statistic

Replacing the info given we got:

t=\frac{13.88-13.2}{\frac{3.14}{\sqrt{44}}}=1.436    

P-value

The degrees of freedom are:

df=n-1=44-1=43  

Since is a right tailed test the p value is:  

p_v =P(t_{(43)}>1.436)=0.079  

Decision

We see that the p value i higher than the significance level so then we FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly higher than 13.2 *the value of 2008 ).

8 0
3 years ago
Can someone please assist me on this question!
BigorU [14]

Answer:

5^-2

Step-by-step explanation:

All you have to do in this situation is subtract the powers :)

10-12=-2

8 0
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Verdich [7]

Answer:

18/30 simplified is 3/5

Step-by-step explanation:

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Which of the following is ..... below
prisoha [69]
The answer is 1/6 because you multiply the two fractions that were made

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3 years ago
What is 8= 2 + 2u because I don’t know it
meriva

Answer:

u = 3

Step-by-step explanation:

Subtract 2 on both sides.

8 - 2 = 2u

Add like terms.

6 = 2u

Divide by 2 on both sides.

u = 3

8 0
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