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kipiarov [429]
4 years ago
12

How do I find side a?

Mathematics
2 answers:
il63 [147K]4 years ago
6 0

Answer: find a

Step-by-step explanation:

nika2105 [10]4 years ago
5 0

Answer:

a=18

Step-by-step explanation:

the triangles are similar, so the coefficient k is \frac{30}{20}

\frac{a}{12}=\frac{30}{20}  \\a= (30*12)/20=360/20=18

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Gregg subtracted some number x from 47, then multiplied the result by two, subtracted 15 and got 45. What was Gregg's number?
irinina [24]
Work in reverse.

45 + 15= 60. 60/2= 30. 30 + x = 47.

So, x= 47-30.
x= 17.


6 0
3 years ago
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aniked [119]

Answer:

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Step-by-step explanation:

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3 0
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Alona [7]
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3 years ago
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Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
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___________________________________________

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