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Sever21 [200]
2 years ago
13

Solve for the missing side “b” and simplify your answer.

Mathematics
1 answer:
aleksklad [387]2 years ago
8 0

Answer:

Step-by-step explanation:

Already answered here: brainly.com/question/26834893

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This is the countiue question to the last one I posted. so please help ​
Vedmedyk [2.9K]

Answer:

4.5 i think

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
My Notes A large manufacturing plant uses lightbulbs with lifetimes that are normally distributed with a mean of 1600 hours and
Evgen [1.6K]

Answer:

The bulbs should be replaced each 1436.9 hours.

Step-by-step explanation:

Problems of normally distributed samples are solved using 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 problem, we have that:

\mu = 1600, \sigma = 70

How often should the bulbs be replaced so that no more than 1% burn out between replacement periods?

This is the first percentile of hours. So it is X when Z has a pvalue of 0.01.

So it is X when Z = -2.33.

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

-2.33 = \frac{X - 1600}{70}

X - 1600 = -2.33*70

X = 1436.9

The bulbs should be replaced each 1436.9 hours.

6 0
3 years ago
What is the slope-intercept equation of the line below? y - i ntercept = (0, - 4) slope = 3
Artist 52 [7]

Answer:

y = 3x -4

Step-by-step explanation:

The slope-intercept equation looks like this: y = mx +b. Where m is the slope of the function and b is the y-coordinate of the vertical intercept (where the function crosses the y-axis). Let's apply the formula:

y = mx +b

y = 3x +(-4)

y = 3x -4

4 0
3 years ago
How do I solve this?
vampirchik [111]
4 , divide the x by the y to find a constant
4 0
3 years ago
12 out of 30 people chose their favourite colour as blue. calculate the angle you would use for blue on a pie chart.
yKpoI14uk [10]
You'd first have to find out what percentage of people would be 30 out of 100%
4 0
3 years ago
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