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2 years ago

14

Martin buys 3 hardcover books and 4 paperback books for $6.50. Anna buys 2 hardcover books and 6 paperback books for $6.00. What

is the cost, in dollars, of each hardcover book?

1 answer:

Travka [436]2 years ago

6 0

Answer: Each hard cover book is worth $1.50

Step-by-step explanation:

Hard cover is worth $1.50, so the softcover is worth 0.50, 3x1.5 is 4.5, 4x0.50 is 2, 2+4.5=6.50

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romanna [79]

Answer:

$\displaystyle x \approx 37.4^\circ$

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Equality Properties

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[Right Triangles Only] SOHCAHTOA
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2 years ago

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2 years ago

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Blizzard [7]

Answer:

Probability is: $\frac{\textbf{13}}{\textbf{51}}$

Step-by-step explanation:

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Also, there are 26 red cards. (Hearts and Diamonds).

First, we determine the probability of drawing a black card.

P(drawing a black card) = $\frac{number \hspace{1mm} of \hspace{1mm} black \hspace{1mm} cards}{total \hspace{1mm} number \hspace{1mm} of \hspace{1mm} cards}$ $= \frac{26}{52} = \frac{\textbf{1}}{\textbf{2}}$

Now, since we don't replace the drawn card, there are only 51 cards.

But the number of red cards is still 26,

∴ P(drawing a red card) = $\frac{number \hspace{1mm} of \hspace{1mm} red \hspace{1mm} cards}{total \hspace{1mm} number \hspace{1mm}of \hspace{1mm} cards}$ $= \frac{26}{51}$

Now, the probability of both black and red card = $\frac{1}{2} \times \frac{26}{51}$

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3 years ago

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2 years ago

Read 2 more answers