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3 years ago

What is 2,871,000,000 in scientific notation

Mathematics

2 answers:

lbvjy [14]3 years ago

7 0

Answer:

2.871 * 10^9

Step-by-step explanation:

For some reason, brainly deleted my answer even though I provided an explanation AND used detail. The reason this is the answer is because you take away all the zeros, resulting in 2871 * 10^6. Then, you take away 3 more places to make it 2.871 * 10^6 * 10^3. That simplifies to 2.871 * 10^9. Scientific notation is like a simplified form, but using exponents that have a base of 10.

Nimfa-mama [501]3 years ago

3 0

Answer:

2.871*10^9

Step-by-step explanation:

add a decimal point at the end of the number ( 2,871,000,000.) then count how many places it takes to move the decimal point between the first and second number (2.8) then write the rest of the numbers higher than "0" after, giving you the 2.871

to show that the number written is in scientific notation you add 10 to the power of the amount of times you moved the decimal place. In this case, because the decimal point was moved a total of 9 times, it would be 10 to the 9th power (10^9).

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4 years ago

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Define rates at which the individuals paint.
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Bob: y = (2 signs)/(8 h) = 1/4 signs/h
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3 years ago

A study measured the speeds at which cars pass through a checkpoint. Assume the speeds are normally distributed such that the av

xxTIMURxx [149]

Answer:

0.3085 = 30.85% probability that the next car will be traveling less than 59 miles per hour.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 61, \sigma = 4$

Calculate the probability that the next car will be traveling less than 59 miles per hour.

This is the pvalue of Z when X = 59. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{59 - 61}{4}$

$Z = -0.5$

$Z = -0.5$ has a pvalue of 0.3085

0.3085 = 30.85% probability that the next car will be traveling less than 59 miles per hour.

7 0

3 years ago