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8_murik_8 [283]
2 years ago
15

The diagram shows rays of light from a point source, P, that reach a detector, D, along two paths. One path is a straight line,

while the other is bent by reflection off a mirror. What is the value of b, correct to one decimal place? Assume that all the points in the diagram lie in the same plane.
5.4



4.2



3.6



2.8
Mathematics
1 answer:
Lady_Fox [76]2 years ago
5 0
The answer is C) B = 3.6.

Hope this helps and p.s. I have done this before.
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Answer:

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Third person: $93

Step-by-step explanation:

Let be "f" the amount of money (in dollars) that the first person contributed to the purchase, "s" the amount of money (in dollars) that the second person contributed to the purchase and "t" the amount of money (in dollars) that the third person contributed to the purchase.

With the information given in the exercise, you can set up the following equations:

Equation 1 → f+s+t=298

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Substitute the Equations 2 and 3 into the Equation 1 and then solve for "f":

f+(f-9)+(f-14)=298\\\\3f-23=298\\\\f=\frac{321}{3}\\\\f=107

Finally, substitute the value of "f" into the Equation 2 and then into the Equation 3, in order to find the values of "s" and "t".

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s=107-9\\\\s=98\\\\\\t=107-14\\\\t=93

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Answer:

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