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dybincka [34]
3 years ago
10

if 60% of the students in math club or boys and if there’s 12 girls in the club then how many students are in the club

Mathematics
1 answer:
nekit [7.7K]3 years ago
8 0

Answer:

30

Step-by-step explanation:

100-60=40. This means that 40% of the students are girls (Assuming there is no ppl that identify as anything else). If that 40% is 12 ppl, 10% in 12/4=3. 3*10=30, there are 30 ppl in the club.

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<u>Explanation:</u>

An image is attached for reference.

(a)

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sin 60^o = \frac{BG}{BD} \\\\0.866 = \frac{BG}{2} \\\\BG = 1.732 m

According to the figure, BG = OE = 1.732 m

Height of the tent, AE = AO + OE

                                  = 1 m + 1.732 m

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(b)

DF = ?

In ΔAOB,

tan 30^o = \frac{AO}{OB} \\\\0.577 = \frac{1}{OB} \\\\OB = 1.733 m\\\\\\

According to the figure, OB = GE = 1.733 m

In ΔBGD,

tan 60^o = \frac{BG}{DG} \\\\1.732 = \frac{1.732}{DG}\\ \\DG = 1m

According to the figure, DE = DG + GE

                                      DE = 1 m + 1.733 m

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Length of the base, DF = 2 X DE

                              DF = 2 X 2.733 m

                               DF = 5.466 m

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Answer:

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Step-by-step explanation:

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