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Leviafan [203]
2 years ago
11

A campus deli serves 250 customers over its busy lunch period from 11:30 a.m. to 1:30 p.m. A quick count of the number of custom

ers waiting in line and being served by the sandwich makers shows that an average of 9 customers are in process at any point in time. What is the average amount of time that a customer spends in process
Mathematics
1 answer:
hammer [34]2 years ago
4 0
2 mins brief douxv six
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Please help fassssst
Zarrin [17]

Answer:

\dfrac{9}{2}

Step-by-step explanation:

You can do this using the quadratic equation:

x =\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}

Let's first setup our expression:

4x² + 12x = 135

the quadratic formula is:

ax² + bx + c = 0

4x² + 12x - 135 = 0

Then:

a = 4

b = 12

c = -135

Now we plug in our coefficients and solve:

x =\dfrac{-12\pm\sqrt{12^{2}-4(4)(-135)}}{2(4)}

We solve for both to determine the positive one:

x =\dfrac{-12+ \sqrt{12^{2}-4(4)(-135)}}{2(4)}              x =\dfrac{-12- \sqrt{12^{2}-4(4)(-135)}}{2(4)}

x =\dfrac{-12+ \sqrt{144+2160}}{8}                        x =\dfrac{-12- \sqrt{144+2160}}{8}

x =\dfrac{-12+ \sqrt{2304}}{8}                                 x =\dfrac{-12- \sqrt{2304}}{8}

x =\dfrac{-12+ 48}{8}                                        x =\dfrac{-12- 48}{8}

x =\dfrac{36}{8} = \dfrac{9}{2}                                           x =\dfrac{-60}{8} = \dfrac{-15}{2}

So if you are looking for a positive solution, just take the positive one as x.

8 0
2 years ago
On the diagram, two angles (<1 and <2) formed by the road, and the borders are congruent.
iren [92.7K]

Answer: they share a road lol

Step-by-step explanation:

8 0
3 years ago
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What is an atom? and what is the difference of atom and molecule<br><br>​
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Answer: <u>An atom is the basic unit of matter</u> and the defining structure of elements. The difference between an atom and a molecule is that <u>molecules are formed when two or more atoms bond together</u>. If molecules contain atoms of different elements, that substance is known as a compound. <u>Atoms make up molecules. </u>

6 0
3 years ago
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Use the line graph to solve.
Ksenya-84 [330]
The answer is c. 0.10. Week 4 is plotted at 0.35 and Week 2 is plotted at 0.25. Difference means subtract. 0.35 - 0.25 = 0.10. Hope this helps!
4 0
3 years ago
A box of candy had 4 cherry pieces for every 9 lemon pieces. If the box had 45 lemon pieces, how many cherry pieces would there
Damm [24]

Answer:

20

Step-by-step explanation:

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2 years ago
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