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kari74 [83]
3 years ago
10

What integer describes 139 feet below sea level?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
7 0
The answer is -139

Hope this helped:)
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A picture is 5 inches wide and 8 inches tall.
olganol [36]

Answer:

100 in^2

Step-by-step explanation:

Solve Area first:

5x8

= 40

Multiply by 2.5 (Enlarge)

40 x 2.5

= 100

6 0
3 years ago
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HELP PLEASE! WORTH 30 POINTS! In this diagram, both polygons are regular. What is the value, in degrees, of the sum of the measu
lara [203]

that is the sum of the interior angles of a triangle,or the 3 sided polygons

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3 years ago
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a washer and a dryer cost $640 combined. the washer cost $60 less than the dryer . what is the cost of the dryer?
Delvig [45]

Answer:

380

Step-by-step explanation:

640/2=320

320-60=260

640-260=380

5 0
3 years ago
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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
2. The smallest number from the given numbers 6895, 4875 and 5689 will have its smallest digits at place. (A) ​
Kruka [31]

The smallest digit of the smallest number is at the thousands place.

<h3>What is Number System ?</h3>

The system of representing numbers is called Number System.

The given numbers are 6895 , 4875 , 5689

The smallest number among these is 4875

The smallest digit in this number is 4

4 is at thousands place

Therefore , The smallest digit of the smallest number is at the thousands place.

To know more about Number System

brainly.com/question/22046046

#SPJ1

6 0
2 years ago
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