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Mars2501 [29]
3 years ago
14

A card is drawn from a well shuffled deck of 52 cards find the probability of drawing a spade or a heart

Mathematics
2 answers:
Scilla [17]3 years ago
8 0

A card is drawn from a well shuffled deck of 52 cards

Probability of (drawing a card) = \frac{number \ of \ cards \ that \ occur}{total \ number \ of \ cards}

Total number of cards = 52

Number of spade = 13

Number of heart = 13

Probability ( drawing a spade) = \frac{13}{52} = \frac{1}{4}

Probability ( drawing a heart) = \frac{13}{52} = \frac{1}{4}

probability of drawing a spade or a heart = \frac{1}{4} +\frac{1}{4}

= \frac{2}{4} = \frac{1}{2}


Kryger [21]3 years ago
7 0

a half ratio so 26:52 or 2:4 or 1:2 depending on if it asked you to simplify or not.

Because it asked both heart and spade, there are 13 per shape in a deck. so 13+13 = 26 and 26 is equal to one half of a deck.

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In the division statement: m ÷ n = q + \frac{r}{n}

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Let us use the fact above to solve the question

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→ Use the rule above to find f(x)

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→ Multiply the 2 brackets at first

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∴ (x² - x + 2)(2x - 3) = 2x³ - 3x² - 2x² + 3x + 4x - 6

→ Add the like terms

∴ (x² - x + 2)(2x - 3) = 2x³ + (-3x² - 2x²) + (3x + 4x) - 6

∴ (x² - x + 2)(2x - 3) = 2x³ + (-5x²) + 7x - 6

∴ (x² - x + 2)(2x - 3) = 2x³ - 5x² + 7x - 6

→ Substitute it in f(x)

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→ Add the like term

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∴ f(x) = 2x³ - 5x² + 7x + (-7)

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