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tekilochka [14]
3 years ago
12

A company makes batteries with an average life span of 300 hours with a standard deviation of 75 hours. Assuming the distributio

n is approximated by a normal curve fine the probability that the battery will last:(give 4 decimal places for each answer)
a. Less than 250 hours

b. Between 225 and 375 hours

c. More than 400 hours
Mathematics
1 answer:
Keith_Richards [23]3 years ago
4 0
Idk tbh, maybe the answer is A.
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1/2÷2/5=what's the answer?
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1.25 is the answer....
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A warden meets with 23 prisoners. He tells them the following:
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Evaluate the following expression if x= 2.14<br> 3.35x + 25 - 2x
prohojiy [21]

Answer:

The final answer is 27.889 (Feel free to round it)

Step-by-step explanation:

3.35 x 2.14 = 7.169

7.169 + 25 = 32.169

2 x 2.14 = 4.28

32.169 - 4.28 = 27.889

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2 years ago
Randy has two 28-pound blocks of ice for his snow cone stand. 1). How many pounds of ice does randy have at his snow cone stand?
dalvyx [7]

Randy has 56 pound blocks of ice for his snow cone stand

Tons of ice is 0.028 tons or \frac{7}{250} \text{ tons }

<em><u>Solution:</u></em>

Randy has two 28-pound blocks of ice for his snow cone stand

<em><u>1). How many pounds of ice does randy have at his snow cone stand?</u></em>

Calculate the total pounds that Randy has

Total pounds = 2 x 28 = 56

Thus Randy has 56 pound blocks of ice for his snow cone stand

<em><u>2) How many tons of ice is there?</u></em>

Total pounds of ice = 56 pounds

So we have to convert 56 pounds to tons

Use the conversion factor

1 pound = 0.0005 ton

Therefore, 56 pounds is equal to,

56 pound = 0.0005 x 56 tons = 0.028 tons

Thus in decimal we got, 0.028 tons

Convert to fraction form,

0.028 = \frac{0.028}{1000} \times 1000 = \frac{28}{1000} = \frac{7}{250}

Thus tons of ice is 0.028 tons or \frac{7}{250} \text{ tons }

8 0
3 years ago
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