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Gre4nikov [31]
3 years ago
14

7.9 x 10 ^7+6.5 x 10^6

Mathematics
2 answers:
Misha Larkins [42]3 years ago
8 0

Answer:

85500000

Step-by-step explanation:

trasher [3.6K]3 years ago
3 0
The answer is 85500000
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What two numbers can you multiply to get 84?
svet-max [94.6K]
84 ÷ 2 = 42

Check it to make sure.

2 × 42 = 84

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3 years ago
1) Erik has a job at Hobby Lobby and he
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Answer:

78

Step-by-step explanation:

is there more to this problem?

13. 00* 6 = 78

7 0
2 years ago
Statement: All equilateral triangles are congruent by SSS congruence. Is the statement true? Why or why not?
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5 0
3 years ago
When Carson runs the 400 meter dash, his finishing times are normally distributed with a mean of 65 seconds and a standard devia
just olya [345]

Given Information:  

Mean time to finish 400 meter dash  = μ = 65 seconds

Standard deviation to finish 400 meter dash = σ = 2.5 seconds  

Confidence level = 95%

Required Information:  

95% confidence interval = ?

Answer:  

 CI = 60 \: to \: 70 \: seconds

Step-by-step explanation:  

In the normal distribution, the empirical rule states approximately 68% of all the data lie within 1 standard deviation from the mean, approximately 95% of all the data lie within 2 standard deviations from the mean and approximately 99.7% of all the data lie within 3 standard deviations from the mean.

The confidence interval for 95% confidence limit is given by

 CI = \mu \pm 2\sigma

Since approximately 95% of all the data lie within 2 standard deviations from the mean. μ is the mean time Carson takes to finish 400 meter dash and σ is the standard deviation.

 CI = 65 \pm 2(2.5)

 CI = 65 \pm 5

 CI = 65 - 5 \: to \: 65 + 5

CI = 60 \: to \: 70 \: seconds

Therefore, the 95% confidence interval is between 60 to 70 seconds

What does it mean?  

It means that we are 95% confident that the Carson's mean to finish 400 meter dash is within the interval of (60, 70).

4 0
2 years ago
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