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3 years ago

During a marathon race an athlete loses 2 % of his mass.

Mathematics

1 answer:

Semmy [17]3 years ago

6 0

Answer:

his mass before the race was 68.5kg

Step-by-step explanation:

let,his mass before the race was 'x'

By question,

x-2% of x =67.13

or,x- 2x/100=67.13

or, 98x/100=67.13

or,98x=67.13×100

or,98x=6713

or,x=6713÷98

or,x=68.5

thus,his mass before the race was 68.5 kg

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Step-by-step explanation:

Given:

Coin is tossed and a single 6 sided number cube is rolled.

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Probability of an event 'A' = Favorable outcomes of 'A' ÷ Total possible outcomes

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Similarly, for rolling a 6 sided cube, the possible outcomes are numbers 1 to 6. So, the number of possible outcomes is, $n(S)=6$

Now, probability of rolling a 3 is given as:

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Therefore, the probability of landing on the heads side of the coin and rolling 3 on the number cube is 0.083.

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