5. A history lecture hall class has 15 students. There is a 15% absentee rate per class meeting.
1 answer:
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Answer:
n = 6
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin30° = , then
sin30° = =
=
( cross- multiply )
2n = 12 ( divide both sides by 2 )
n = 6