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8090 [49]
2 years ago
12

Plz Answer ASAP! Thank you!

Mathematics
1 answer:
NARA [144]2 years ago
3 0

Answer:

Step-by-step explanation:triangle P: 12, 24, and 30

triangle Q: 9, 40, and 41

triangle R: 5, 18, and 21

Which triangle is a right triangle? Explain your reasoning.

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Three times the sum of a number and 4 is the same as 18 more than the number
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First, figure out what you do and don't know....
You do know that 3 times the sum of a number and 4 is 18 more than the number....you don't know the number so you make it the variable x 
now take 3 times the sum of a number and 4 and make that an expression 3x+4 this expression is the same or equal to the sum of x and 18 x+18
3x+4=x+18
2x+4=18
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x=7
hope this helped :)
         
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