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2 years ago

Ryan had 220 baseball cards

Mathematics

1 answer:

emmasim [6.3K]2 years ago

8 0

Answer:

220 baseball cards

Step-by-step explanation:

You didn't tell us anything s o i guess 220 baseball cards

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A used car dealer has 30 cars and 10 of them are lemons (i.e.~ mechanically faulty used cars), and you don't know which is which

Triss [41]

Answer: Hence, the probability that he will get at least one lemon is 0.70.

Step-by-step explanation:

Since we have given that

Number of cars = 30

Number of lemon cars = 10

Number of other than lemon cars = 30-10 = 20

According to question, he bought 3 cars,

we need to find the probability that you will get at least one lemon.

So, P(X≤1)=1-P(X=0)=1-P(no lemon)

Here, P(no lemon ) is given by

$\dfrac{20}{30}\times \dfrac{20}{30}\times \dfrac{20}{30}=(\dfrac{20}{30})^3$

so, it becomes,

$P(X\geq 1)=1-(\dfrac{20}{30})^3=1-(0.67)^3=0.70$

Hence, the probability that he will get at least one lemon is 0.70.

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2 years ago

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3 years ago

Which expression is equivalent to(8w 7x-5y3z-9)-2/3

Shkiper50 [21]

Answer:

$56wx - 15yz - \frac{29}{3}$

Step-by-step explanation:

$1. \: 56wx - 5y \times 3z - 9 - \frac{2}{3} \\ 2. \: 56wx - 15yz - 9 - \frac{2}{3} \\ 3. \: 56wx - 15yz + ( - 9 - \frac{2}{3} )$

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