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3 years ago

If you draw two cards from the deck at the same time, what is the probability that they will both be hearts?

Mathematics

1 answer:

koban [17]3 years ago

4 0

Answer:

The probability is 1/17.

Step-by-step explanation:

The total number of ways in which 2 cards can be selected from a pack of 52 cards is $\binom{52}{2}$

The total number of combinations of 2 cards with hearts equals $\binom{13}{2}$

Thus the probability of the event that both the cards have hearts becomes

$P(E)=\frac{\binom{13}{2}}{\binom{52}{2}}=\frac{1}{17}$

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Sasha is making some shelves which are 75.5 cm long. If the wood she is using is 180 cm long, how many pieces will she need to m

anzhelika [568]

Answer:

Step-by-step explanation:

Since the shelves are 75.5cm long, the total length she would be needing is 75.5cm × 6 = 453cm

Now, the length of the wood she is using is 180cm, to get enough length to make the shelves, we would need to divide 453cm by 180cm which gives a value of around 2.51

This is approximately equal to 3 when rounded up to the nearest whole number.

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3 years ago

Perform the indicated operation and simplify the result. Leave your answer in factored form.

Aliun [14]

Answer:

$\frac{x }{x^{2}-9 } +\frac{9}{x}=\frac{x^{2} }{x(x^{2}-9) }+\frac{9(x^{2}-9) }{x(x^{2} -9)}\\\\=\frac{10x^{2} -81}{x(x-3)(x+3)}$

Step-by-step explanation:

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3 years ago

Read 2 more answers

Browning, montana, holds the u.S record for the greatest temperature drop in one day. On january 23, 1916, the temperature chang

dmitriy555 [2]

Answer:

Total temperature change 104.25 f.

Step-by-step explanation:

Average temperature change is calculated by dividing total temperature change by the total hours it took for the change.

We have been given the average temperature change.

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4 years ago

Some friends are making cakes for a bake sale. In all, they need 10 cups of sugar. However, they only have a 1/4 cup measuring

love history [14]

Answer:

Step-by-step explanation:

1/4 is one fourth of 1 cup then multiple that by 10. 4x10 =40

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2 years ago

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Harrizon [31]

Answer:ldk

Applying exponential property,

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Step-by-step explanation:

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3 years ago