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gtnhenbr [62]
3 years ago
7

A math class has 7 girls and 3 boys in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly select

s a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys? Write your answer as a fraction in simplest form.
Mathematics
1 answer:
Elena L [17]3 years ago
5 0

|\Omega|=10\cdot10=100\\ |A|=3\cdot5=15\\\\ P(A)=\dfrac{15}{100}=\dfrac{3}{20}

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Answer:

A) 20.82 > 20.55

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< — "is less than"

The only true statement of those listed is ...

20.82 is greater than 20.55, or 20.82 > 20.55 . . . . selection A

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3 0
3 years ago
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Answer:

150 mL

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We need a mixture that is at 50%, now we have 200 mL at 35% and another mixture that is at 70%, that is, we must calculate how much of this mixture is added, by the following equation

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150 mL must be added so that the mixture is 50%.

6 0
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