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34kurt
3 years ago
6

It takes 12 people 15 hours to complete and certain job.how many hours would it take 18 people, working at the same rate to comp

lete 2/5 of the same job?
Mathematics
1 answer:
pochemuha3 years ago
8 0

Answer:

2 Hours

Step-by-step explanation:

Required man hours to complete the full job = 12 *15

                                                                           =180 Man hours

Required man hours to complete the 2/5 of the job = 180/5

                                                                                      = 36 Man hours

if 18 peoples are working,

required hours to complete the 2/5 of the job = 36 /18

                                                                            = 2 hours

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X+136 x+56<br> Solve for x
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Answer:

x=-56/137

Step-by-step explanation:

x+136x+56=0

=137x+56=0

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=137x/137= -56/137

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3 years ago
The difference between the volume of cone and the volume of a cylinder?
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Solution:

we have been asked to find

The difference between the volume of cone and the volume of a cylinder?

As we know that the volume of the cone is given by the formula

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And the volume of the Cylinder is given by the formula

V= \pi r^2h\\ \\ \text{where h=Height, r=radius}\\

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4 0
3 years ago
When flipping a coin, the chance that it will come up a head is . If you flip the coin a second time, the chance that it will co
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Answer:

all 0.5

Step-by-step explanation:

Suppose this is a fair coin, so the chance of getting head vs tail is 50-50, or 0.5.

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If you flip a coin 25 times and all get head, then the chance of getting the next head is still 0.5. Because this event is still independent and not related to all the previous flips.

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3 years ago
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Answer:

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Step-by-step explanation:

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1) The probability of each event should be strictly POSITIVE.

2) Sum of all events in a a distribution should be 1.

Now, here

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D)The table is NOT a PROBABILITY DISTRIBUTION as here

P(Purple) =  -0.1, which is negative.

Hence, table 1 is the only table which represents  PROBABILITY DISTRIBUTION table.

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