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3 years ago

Can someone help me and tell me the steps plzz

Mathematics

2 answers:

Elodia [21]3 years ago

7 0

So this is what you know:-
8 car race
What your looking for:-
How many arrangements for the first, second, and third place?

AfilCa [17]3 years ago

3 0

Answer:

Step-by-step explanation:

The actual answer would be 21 because 8 people can qualify for first place and after only 7 for second place because someone already got first, then for third place only 6 would qualify but, here the only reasonable answer would be 24 because maybe all 8 people can qualify for first, second, and third, which would make no sense.

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3 years ago

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uysha [10]

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$\stackrel{\begin{array}{llll} \textit{\tiny "t"ime varies}\\ \textit{\tiny inversely with "s"peed} \end{array}}{t = \cfrac{k}{s}}\qquad \textit{we know that} \begin{cases} t=\stackrel{minutes}{40}\to \stackrel{hrs}{\frac{2}{3}}\\ s=\stackrel{m/h}{9} \end{cases} \implies \cfrac{2}{3}~~ = ~~\cfrac{k}{9} \\\\\\ 18=3k\implies \cfrac{18}{3}=k\implies 6=k~\hfill \boxed{t=\cfrac{6}{s}} \\\\\\ \textit{when s = }\stackrel{m/h}{12}\textit{ what is "t"?}\qquad t=\cfrac{6}{12}\implies t=\cfrac{1}{2}$

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aleksley [76]

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4 years ago

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Can someone help me and tell me the steps plzz​

Can someone help me and tell me the steps plzz