Answer:
its a combination problem, so in your calculator put 9 nCr 4 and you'll get 126. i hope this helps. :)
Step-by-step explanation:
Answer:
(21/30)*100 = $70
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Factor 
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<em>good luck, hope this helps :)</em>