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4 years ago

9

pressure equals force per unit of area. if 60 lbs of force were exerted on a 3 square inch surface, what was the pressure in pou

nds per square inch?

1 answer:

Anvisha [2.4K]4 years ago

3 0

Answer:

20 pounds / in^2

Step-by-step explanation:

Presssure = Force in pounds / Area in square inches.

Force: 60 pounds (given)

Area: 3 in^2 (given

Pressure = 60/3 = 20 pounds / square in

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It takes 24 electricians 36 days to wire a new housing subdivision. How many days would 32 electricians take to do the same job?

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Answer:

The 32 electricians are expected to finish the job in 27 days.

Step-by-step explanation:

In this case we can apply a rule of three to calculate the time it'll take for the 32 electricians to finish the job. This is done below:

24 electricians -> 36 days

32 electricians -> x days

We have to be careful here, since the variables are inversely proportional, since if there are more electricians working on the same job, we expect the job to be finished in fewer days, therefore we need to invert one of the fractions as shown below:

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Probabilities are used to determine the chances of an event.

<em>The probability of selecting a flower that has a long stem and is large is 0.29</em>
<em>The probability of selecting a large flower that has a short stem is 0.597</em>

<em><u /></em>

<u />

<u>A. Probability of selecting a large flower with a long stem</u>

The total number of flowers is:

$Total = 10 + 18 + 43 + 29$

$Total = 100$

Large flowers with long stem are 29.

So, the probability is:

$Pr = \frac{29}{Total}$

$Pr = \frac{29}{100}$

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<u>B. Probability that a large flower has a short stem</u>

The total number of large flowers are

$Large = 43 + 29$

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Large flowers with short stem are 43

So, the probability is:

$Pr = \frac{43}{Large}$

$Pr = \frac{43}{72}$

$Pr = 0.597$

Read more about probabilities at:

brainly.com/question/24297863

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