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sergij07 [2.7K]
3 years ago
14

)

Mathematics
1 answer:
Leno4ka [110]3 years ago
8 0

Answer:

10 in

Step-by-step explanation:

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Brainliest for the correct answer
dexar [7]

Answer:

30

Step-by-step explanation:

Tye answer is 30 because all the measures in a triangle are equal to 180 degrees. That would equal 30 + 60 + 90 = 180

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3 years ago
There are 30 students in a class that took a test. The average grade of 10 students was 80. The other 20 students average was 89
Vsevolod [243]
10 students averaged 80, so the sum of their scores was (10 x 80) = 800

20 students averaged 89, so the sum of their scores was (20 x 89) = 1,780

All together, the sum of all 30 scores was (800 + 1,780) = 2,580

30 students totaled 2,580, so their average was  (2,580 / 30)  = <em> 86</em> .
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In circle P, diameter QS measures 20 centimeters
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The answer is 19.9 centimeters. Hope this helps!!!
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