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k0ka [10]
3 years ago
8

Lucia has 50 sports cards she has 20 football cards 10 baseball card 15 basketball card and five hockey cards a single card is s

elected at a random what is the probability that the card is a football card or basketball card
Mathematics
2 answers:
Ket [755]3 years ago
4 0
The probability that the card is a football card is 20 out of 50 or 40%
the probability that the card is a basketball card is 10 out of 50 or 20%
monitta3 years ago
4 0

Answer: \dfrac{7}{10}

Step-by-step explanation:

Given : Total sports cards = 50

Number of football cards = 20

Number of basketball card = 15

Probability of getting a foot ball card =\dfrac{\text{No. of football card}}{\text{Total carrds}}

=\dfrac{20}{50}

Probability of getting a basketball card =\dfrac{\text{No. of basketball card}}{\text{Total carrds}}

=\dfrac{15}{50}

Since each card is different from another , so the events of drawing any card are independent.

In this case P(foot ball card or basket ball card)= P(foot ball card ) +P(basketball card)

=\dfrac{20}{50}+\dfrac{15}{50}=\dfrac{35}{50}=\dfrac{7}{10}

Thus , the probability that the card is a football card or basketball card is \dfrac{7}{10} .

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Awnser:

1/2 as m, and -3 as b

Step-by-step explanation:

To find the equation of any line, you use the formula: mx+b=y, where m is the slope, y is the y coordinate, b is the y intercept, and x is the x coordinate.  However, it only asks for b and m.

You'll need to first find 2 points.

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vladimir1956 [14]

Answer:

12.5 feet

Step-by-step explanation:

how to:

lets find the angle that corresponds with the 10 foot side.

to do that we add 50 degrees plus 90 degrees (right angle) to get 140 degrees.

as we know, a triangles angles will total 180 degrees, so 180 - 140 = 40 degrees for the angle corresponding to the 10 foot side.

put these into ratios:

<u>Angle A  </u>  =    <u>Angle B</u>

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now plug in our numbers:

<u>50 degrees</u>     =     <u>40 degrees</u>

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<u />

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Step-by-step explanation:

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