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4vir4ik [10]
3 years ago
14

each day, Mr. Samms randomly chooses 2 students from his class to serve as helpers. There are 15 boys and 10 girls in the class.

what is the probability that Mr. Samms will choose 2 girls to be helpers?
Mathematics
1 answer:
Ugo [173]3 years ago
6 0
2 over 25 because 15+10=25 and it says 2 girls so it comes to 2 over 25
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Hi there,

Take y from first equation and use it / substitute it into the second equation:

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We need to find the base x in the following equation:

365_7+43_x=217_{10}

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Now, lets do the same for 43 based x. Lets convert 43 based x to base 10:

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Now, we have all number in base 10. Then, our first equation can be written in base 10 as

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