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Serjik [45]
3 years ago
13

Water hose has filled up 1/7 of a pool after 1/10 of an hour at this rate how many hours will it take to fill the pool

Mathematics
2 answers:
expeople1 [14]3 years ago
4 0

Given that

time required to filled 1/7 of pool = 1/10

so time required to fill  1 pool = 1/10 ÷ 1/7 = 1/10 × 7 = 7/10 hrs

So 0.7 hrs will require to fill the pool at given rate

Lynna [10]3 years ago
4 0

Answer:

It takes   \frac{7}{10}  of an hour to fill the pool

Step-by-step explanation:

Let x be the number of hours taken to fill the pool.

Using proportion;

1/7 pool=   1/10 hour

1    pool   =   x

cross-multiply

1/7     x   =  1/10

\frac{x}{7}   =   \frac{1}{10}

cross- multiply

10x = 7

Divide both-side of the equation by 10

\frac{10x}{10}      =    \frac{7}{10}

(On the left-hand side of the equation 10 at the numerator will cancel-out 10 at the denominaor while at the right-hand side of the equation 7 will be divided by 10)

x =  \frac{7}{10}  of an hour

It takes   \frac{7}{10}  of an hour to fill the pool

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Step-by-step explanation:

if square plus circle is triangle then if you subtract a square from it all you have left is a circle

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What are the solutions to the quadratic equation <img src="https://tex.z-dn.net/?f=x%5E2%20%2B40%3D0" id="TexFormula1" title="x^
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Step-by-step explanation:

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3 years ago
Can anybody help me with these two questions​
sladkih [1.3K]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
mauricio estimates that the first module of the project could be completed in as few as 15 days or could take as many as 25 days
4vir4ik [10]

Answer:

<em>Most likely time, </em>according to PERT (Program evaluation and review technique).

Step-by-step explanation:

PERT is "a statistical tool used in <em>project management" (Program evaluation and review technique (2020), </em>in Wikipedia), and it is commonly used with CPM <em>(Critical Path Method)</em> to manage projects.

Inside PERT, there are different defined times to accomplished an activity in a project, that is:

  • An <em>optimistic time</em> or minimum time required to accomplished an activity, i.e., if everything goes better than normal, the activity is accomplished before expected.
  • A <em>pessimistic time, </em>a time quite the opposite to optimistic time.
  • A <em>most likely time</em>, or a time required to accomplished an activity if everything goes as expected or normally.
  • An <em>expected time</em>, an statistical estimation.

Considering the question, we have that the <em>time</em> when "the first module of the project could be completed":

  • "[...] in as few as 15 days"  is the <em>optimistic time</em>.
  • "[...] or could take as many as 25 days" is the <em>pessimistic time</em>.
  • "[...] but most likely will require 20 days" is the <em>most likely time</em>.

As a result, the <em>20-day estimate</em> is called the <em>most likely time</em> in the context of the PERT/CPM techniques.

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