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PIT_PIT [208]
2 years ago
8

Quinn had $4.00. He spent 1/2​ of his money on a baseball card, 1/4 of it on a drink, and 1/8 of it on bubble gum. How much mone

y does Quinn have left?
US dollars btw
Mathematics
2 answers:
Pepsi [2]2 years ago
4 0

Answer:

$0.50

Step-by-step explanation:

He spent 2 on a card 1 on a drink and 1/2 on a piece of gum.

4 - (2+1+1/2) = 1/2

I am not sure it's correct.

mart [117]2 years ago
3 0

Answer: Quinn has $0.50 left.

Step-by-step explanation:

This is because if you were to divide $4.00 into 1/2 it would equal $2.

Next, you would divide $4 into 1/4, this would give you $1.

Finally, you would divide $4 into 1/8, this would give you $0.50.

To get the answer you would add all of those quotients together, adding up to $3.50.

You would then take $4.00 - $3.50 = $0.50

(To get those numbers just divide by the denominator it is way easier. Example: To divide $4 into 1/8 you would divide by 8. aka 4 ÷ 8.)

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P (X ≤ 4)

Step-by-step explanation:

The binomial probability formula can be used to find the probability of a binomial experiment for a specific number of successes.  It <em>does not</em> find the probability for a <em>range</em> of successes, as in this case.

 

The <em>range</em> "x≤4" means x = 0 <em>or</em> x = 1 <em>or </em>x = 2 <em>or</em> x = 3 <em>or</em> x = 4, so there are five different probability calculations to do.

 

To to find the total probability, we use the addition rule that states that the probabilities of different events can be added to find the probability for the entire set of events only if the events are <em>Mutually Exclusive</em>. The outcomes of a binomial experiment are mutually exclusive for any value of x between zero and n, as long as n and p don't change, so we're allowed to add the five calculated probabilities together to find the total probability.

 

The probability that x ≤ 4 can be written as P (X ≤ 4) or as P (X = 0 or X = 1 or X = 2 or X = 3 or X = 4) which means (because of the addition rule) that P(x ≤ 4) = P(x = 0) + P(x = 1) + P (x = 2) + P (x = 3) + P (x = 4)

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Step-by-step explanation:

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How do we know this? Check this out using the four points given on the graph.

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