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Marat540 [252]
3 years ago
15

Write 49,000 in scientific notation?

Mathematics
2 answers:
prisoha [69]3 years ago
8 0

Answer:

4.9x10^4

Step-by-step explanation:

4.9*10000=49,000

german3 years ago
3 0
4.9x10^3 bbbbbbbbbbbbbbbbbbb
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The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.35°F and a standard deviati
DochEvi [55]

Answer:

a) 99.97%

b) 65%

Step-by-step explanation:

• 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ.

• 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ.

• 99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ.

Mean of 98.35°F and a standard deviation of 0.64°F.

a. What is the approximate percentage of healthy adults with body temperatures within 3 standard deviations of the mean, or between 96.43°F and 100.27°F?

μ - 3σ

98.35 - 3(0.64)

= 96.43°F

μ + 3σ.

98.35 + 3(0.64)

= 100.27°F

The approximate percentage of healthy adults with body temperatures is 99.97%

b. What is the approximate percentage of healthy adults with body temperatures between 97 .71°F and 98.99°F?

within 1 standard deviation from the mean - that means between μ - σ and μ + σ.

μ - σ

98.35 - (0.64)

= 97.71°F

μ + σ.

98.35 + (0.64)

= 98.99°F

Therefore, the approximate percentage of healthy adults with body temperatures between 97.71°F and 98.99°F is 65%

4 0
3 years ago
Helpppppppppp meeee please
Artemon [7]

Answer:

<2 and <8

<3 and <5

Step-by-step explanation:

The Alternate Interior Angles Theorem states that, when two parallel lines are cut by a transversal , the resulting alternate interior angles are congruent .

This is my 100th question answered!

3 0
3 years ago
Alex is thinking of a doubles fact. The sum is greater than the sum of 7 7 but less than the sum of 8 9. What fact is Alex think
elena-14-01-66 [18.8K]
There has to be something in between the two numbers, for example 7 x 7 or 7+7 not just 7 7. Without the equation it would be highly impossible to answer :D
6 0
3 years ago
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An elevator has a placard stating that the maximum capacity is 23252325 lblong dash—1515 passengers.​ So, 1515 adult male passen
alexgriva [62]

Answer:

0.7734; no, it does not.

Step-by-step explanation:

To find this probability we will use a z-score.  We are dealing with the probability of a sample mean being larger than a given value; this means we use the formula

z=\frac{\bar{X}-\mu}{\sigma \div \sqrt{n}}

Our x-bar in this problem is 155, as that is the sample mean we are trying to find the probability of.  Our mean, μ, is 161 and our standard deviation, σ, is 31.  Our sample size, n, is 15.  This gives us

z=\frac{155-161}{31\div \sqrt{15}}=\frac{-6}{8.0042}=-0.75

Using a z table, we see that the area under the curve less than this, corresponding with probability less than this value, is 0.2266.  This means that the probability of the sample mean being larger than this is

1-0.2266 = 0.7734, or 77.34%.

Since there is a 77.34% chance of the passengers having a mean weight that is too heavy, this elevator is not safe.

8 0
3 years ago
Camila had a large collection of basketball cards. She gave half of them to her friend Erin and a sixth of them to her brother.
Nookie1986 [14]
<span>450 Camila started with 450 cards. She gave Erin half of them (225) and her brother a sixth of them (75). She was left with 150 cards (450 - 225 - 75 = 150). If x = number of cards Camila started with, then x/2 = half the cards and x/6 = one sixth of the cards. 150 = number of cards left. This can be represented as: x - x/2 - x/6 = 150 Multiply by 6 and solve for x 6x - 3x -x = 900 2x = 900 x = 450 = number of cards Camila started with</span>
8 0
3 years ago
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