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gladu [14]
3 years ago
5

From this density, the probability that X is between 0.5 and 1.5 is:

Mathematics
1 answer:
Anastasy [175]3 years ago
7 0

Answer:

bbbbbbbbbbbbbbbbbbbbb

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What is the missing term?
Nadya [2.5K]

Answer:

3x^2

Step-by-step explanation:

The missing term is the product of x and 3x.

x * 3x = 3x^2

Answer: 3x^2

8 0
3 years ago
Solve for 2. Round to the nearest tenth, if necessary.<br> 19<br> 38<br> R<br> X
inessss [21]

Answer:

24.36

Step-by-step explanation:

tan(angle) = opposite/adjacent

tan(38) = 19/x

x = 19/tan(38) = 19/0.78 = 24.4

4 0
2 years ago
On average, 28 percent of 18 to 34 year olds check their social media profiles before getting out of bed in the morning. Suppose
Lostsunrise [7]

Answer:

0.7881 = 78.81% probability that the percent of 18 to 34 year olds who check social media before getting out of bed in the morning is, at most, 32.

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:

\mu = 28, \sigma = 5

Find the probability that the percent of 18 to 34 year olds who check social media before getting out of bed in the morning is, at most, 32.

This is the pvalue of Z when X = 32. So

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

Z = \frac{32 - 28}{5}

Z = 0.8

Z = 0.8 has a pvalue of 0.7881

0.7881 = 78.81% probability that the percent of 18 to 34 year olds who check social media before getting out of bed in the morning is, at most, 32.

5 0
3 years ago
What’s equivalent to 5(2x+6)
SSSSS [86.1K]
Anyone want to join a zoom

Meeting 340 232 6008 and Code gc94F4
3 0
3 years ago
Read 2 more answers
A town has accumulated 4 inches of snow, and the snow depth is increasing by 6 inches every hour. A nearby town has accumulated
zimovet [89]

9514 1404 393

Answer:

  2 hours

Step-by-step explanation:

The initial difference in depth is 10-4 = 6 inches. The difference in snowfall rates is 6-3 = 3 inches per hour.

At that rate, the difference in depth will be made up in ...

  (6 in)/(3 in/h) = 2 h

In 2 hours the snowfall in the two towns will be equal.

_____

You could write equations for depth, then equate them.

  d1 = 4 +6h

  d2 = 10 +3h

  d1 = d2 . . . . . . . . . . for some value of h the depths will be equal

  4 +6h = 10 +3h

  h(6 -3) = 10 -4 . . . . . subtract 3h+4 from both sides

  h = 6/3 = 2

Snowfall will be equal in 2 hours.

7 0
3 years ago
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