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3 years ago

How many ways are there for 15 track runners to win 1st place, 2nd place and 3rd place?

Mathematics

2 answers:

const2013 [10]3 years ago

6 0

Answer:

Step-by-step explanation: 15x3

Olin [163]3 years ago

3 0

2,730 ways. You multiply 15x14x13 to get the answer of 2,730.

Further explanation: when you are looking for ways to find 1st place you have 15 ways total. After one of those spots are taken, you have one less way and therefore have 14 ways. Subtract one more way and you have 13 ways left. You multiply these together and that is how you get the answer <3

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Do 1/4 and 4/16 form a proportion

Anna11 [10]

Answerino:

yes, a 1:1 proportion

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2 years ago

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Is 3/4y=9 true or false

amm1812

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Answer:

Let's solve your equation step-by-step.

3 / 4 y = 9

Step 1: Multiply both sides by 4/3.

(4 / 3 ) * ( 3 / 4 y ) = ( 4 / 3 ) * ( 9 )

y = 12

Answer:

y = 12

<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3

Insert 12 to the y value:

3 / 4 ( 12 ) = 9

9 = 9

True

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2 years ago

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Please help me, I need an explanation as well please, not just the answer

elena-s [515]

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2 years ago

Ruden bought 6 new books for his collection, increasing his collection by 12%. How many books did he have before his purchase?

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Answer:

he had 44 books before he bought those 6

Step-by-step explanation:

If you multiply 6 times 2 it is 12, which means if you take away 12 from 100 that is 88. if you divided 88 by 2 (the same thing you did to the 6 to make it 12%) that would be 44.

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3 years ago

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