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Nady [450]
3 years ago
6

Dominic books with 12 postcards in each book. He has 4 boxes with 20 coins in each box. If he gives 15 post cards to his friends

, how many postcards and coins does he have?
Mathematics
2 answers:
vlabodo [156]3 years ago
8 0
The awnser is 80 coins
Lena [83]3 years ago
5 0
How many books are there?

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What are the measures of Angles a, b, and c? Show your work and explain your answers.
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Answer:

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Step-by-step explanation:

Angle "a" and 30° are vertical angles, hence equal.

Angle "b" and angle "a" are complementary angles, so b = 90° -30° = 60°.

Angle "c" is supplementary to the one marked 75°, so is 180° -75° = 105°.

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Angles "a" and "b" are complementary because the sum of angles in a triangle is 180° and the third angle in that triangle is 90°. Then ...

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ki77a [65]

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<em><u>Explanation</u></em>

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