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defon
3 years ago
14

It takes Paul 9 hours longer than Li Ming to paint a house. Working together they can do the job in 20 hours. How long would it

take Li Ming, working alone, to paint the house ?
Mathematics
1 answer:
Triss [41]3 years ago
3 0

Li Ming can paint the whole house in 10 hours

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lorasvet [3.4K]

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2 years ago
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Answer:

84.13% of bottles will have volume greater than 994 mL

Step-by-step explanation:

Mean volume = u = 1000

Standard deviation = \sigma = 6

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Since the data is normally distributed we will use the concept of z-score to find the required proportion. First we convert 994 to its equivalent z-score, then using the z-table we will find the corresponding value of proportion. The formula to calculate the z score is:

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Since, 994 is equivalent to a z score of -1, we can write that proportion of values which will be greater than 994 would be:

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Answer:

90

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if you get the numbers 10 and 9 you multiply them to get 90

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