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Rom4ik [11]
3 years ago
5

Ben writes the product of 7 and 50. Then I have subtracts the least 3-digit multiple of 10 from the product. What is the differe

nce?
Mathematics
2 answers:
S_A_V [24]3 years ago
6 0
250 because
7x50 is 350
Then subtract (350-100)
Finally you get 250.. which is the answer
Hatshy [7]3 years ago
4 0
250. 7*50=350 and the least 3-digit multiple of 10 is 100 (10*10). 350-100=250
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The life times of light bulbs produced by a particular manufacturer have a mean of 1,200 hours and a standard deviation of 400 h
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Answer:

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Step-by-step explanation:

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Using a table of partial areas beneath the standardized normal curve (see Table of normal curve, a z-value of 0.375 corresponds to an area of 0.1460 between the mean value.

Thus the probability of a lightbulbs having lives of fewer than 1,050 hours is 0.1460.

for 9 lightbulb it is likely that 9*0.146 i.e. 1.31 bulbs will have lives of fewer than 1,050 hours?  

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