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r-ruslan [8.4K]
2 years ago
11

210 students were asked whether they want to go to a water park or a roller skating rink for a class party. 50 students are girl

s who want to go to the water park. 45 students are girls who want to go skating. 60 students are boys who want to go to the water park. Answer the questions to analyze the data. 1. Use the given information to fill in the two-way table.

Mathematics
1 answer:
serg [7]2 years ago
4 0
Boys: 60 want to go to the water park, 55 want to go skating. 115 boys total

Girls: 50 want to go to the water park, 45 want to go skating. 95 girls total
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Answer:

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Step-by-step explanation:

The given series is :

24 + 48 + 72 + 96 +...+ 480

The first term, a= 24

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So,

a_n=a+(n-1)d\\\\480=24+(n-1)24\\\\480=24+24n-24\\\\n=20

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S_{20}=\dfrac{n}{2}(2a+(n-1)d))\\\\=\dfrac{20}{2}\times (2(24)+19(24))\\\\=5040

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