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Nata [24]
2 years ago
8

1.Bart's grandfather gave him a collection of 780 old books. Bart purchases 20 books every

Mathematics
1 answer:
Tatiana [17]2 years ago
3 0
The answerrrr is 84 I think
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True or False
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Svetach [21]

Answer:

y=3(2)

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2 years ago
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Llana [10]

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experimental, 3

Step-by-step explanation:

6 0
3 years ago
Can anyone help me with this geometry proof
Artemon [7]

Answer:

m∠3 = 57° → proved down

Step-by-step explanation:

The given is:

  • Lines l_{1} and l_{2}
  • Lines t_{1} and t_{2}
  • m∠1 = 123°

We want to prove that m∠3 = 57°

∵  l_{1} // l_{2} and t_{1} is the transversal → given

∴ m∠1 = m∠2 → corresponding angles

∵ m∠1 = 123° → given

∴ m∠2 = 123° → equality of two corresponding angles

∵ t_{1} // t_{2} and l_{2} is the transversal → given

∴ m∠2 + m∠3 = 180° → interior supplementary angles  

∵ m∠2 = 123° → proved

∴ 123 + m∠3 = 180 → subtract 123 from both sides

∴ m∠3 = 57° → inverse addition property

4 0
2 years ago
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