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givi [52]
3 years ago
9

4. a) A load of 1000N can be lifted by applying an effort of

Mathematics
1 answer:
miv72 [106K]3 years ago
4 0

Step-by-step explanation:

load=1000N

effort=250N

load arm=25cm

effort arm=?

Now,

E×E.D=L×L.D

250×E.D=1000×25

E.D=1000×25÷250

E.D=100cm

therefore,effort arm is 100cm.

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<h3><u>Probabilities</u></h3>

Since the Better Business Bureau conducts a survey of 30 people who recently hired an attorney, and 17 of them say that they would recommend their attorney to a friend, while 8 say that they would not recommend their attorney to a friend, and the remaining 5 say that they are not sure, and then three people are selected from this group of 30 people at random, to determine what is the probability that A) all three would recommend their attorney to a friend, and B) the first would not, but the second and third would recommend their attorney to a friend, the following calculation must be performed:

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Learn more about probabilities in brainly.com/question/24217562

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