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WINSTONCH [101]
3 years ago
15

What is the answer of this attachment:

Mathematics
1 answer:
Solnce55 [7]3 years ago
4 0

Answer:

(B) 2

Step-by-step explanation:

=> \frac{\sqrt{32}+ \sqrt{48} }{\sqrt{8}+\sqrt{12}  }

=> \frac{4\sqrt{2}+4\sqrt{3}  }{2\sqrt{2}+2\sqrt{3}  }

=> \frac{4(\sqrt{2}+\sqrt{3})  }{2(\sqrt{2}+\sqrt{3)}  }

Cancelling \sqrt{2}+\sqrt{3}

=> \frac{4}{2}

=> 2

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x + y = 15 and 5x + 10y = 100 are the system of equations that represent this situation

<em><u>Solution:</u></em>

Let "x" be the number of multiple choice questions

Let "y" be the number of short answer questions

Worth of 1 multiple choice questions = 5 points

Worth of 1 short answer question = 10 points

<em><u>Ms. Lee wrote a test with 15 multiple choice short answer questions</u></em>

Therefore,

number of multiple choice questions + number of short answer questions = 15

x + y = 15 -------- eqn 1

<em><u>The maximum number of points possible on the test is 100</u></em>

Therefore, we frame a equation as:

number of multiple choice questions x Worth of 1 multiple choice questions + number of short answer questions x Worth of 1 short answer question = 100

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5x + 10y = 100 ------- eqn 2

Thus eqn 1 and eqn 2 are the system of equations that represent this situation

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45-24=21

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