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navik [9.2K]
2 years ago
12

Justin buys 12 pencils for $0.56 each. he pays with a $10 bill. how much change will he recieve?

Mathematics
1 answer:
blondinia [14]2 years ago
7 0

Answer:

$3.28

Step-by-step explanation:

→ Find how much he should pay

6.72

→ Subtract from original amount

10.00 - 6.72 = 3.28

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A building that is 100 for tall casts a shadow that makes a 30 degree angle. Approximately how long in feet is the shadow across
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Answer:   173.20 ft

Step-by-step explanation:

Observe the attached image. To know how long the shadow is, we must find the length of the adjacent side in the triangle shown. Where the opposite side represents the height of the building

By definition, the function tan (x) is defined as

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So

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Then

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l = \frac{100}{tan(30\°)}

l = 173.20\ ft

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