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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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2 years ago
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A DEF has vertices D(-5,-1), E (3, 3), and F (1,-5). Find the equation of the altitude through F in
Tems11 [23]

Answer:

y = -2x -3

Step-by-step explanation:

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- find slope of line DE

D ( x2 = -5, y2 = -1); E (x1 = 3, y1 = 3)

slope m = (y2-y1) / (x2-x1) = (-1-3) / (-5-3) = -4/ -8 = 1/2

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equation of the altitude trough F is y = -2x -3

4 0
2 years ago
WHAT IS THE ANSWER FOR 12 1/3 + 8 3/4 +17 2/8 +23 2/3=
gulaghasi [49]
12  \dfrac{1}{3}  + 8  \dfrac{3}{4}  +17  \dfrac{2}{8}  +23  \dfrac{2}{3}

Simplify
= 12  \dfrac{1}{3}  + 8  \dfrac{3}{4}  +17  \dfrac{1}{4}  +23  \dfrac{2}{3}

Change the denominators to be the same
= 12  \dfrac{1 \times 4}{3 \times 4}  + 8  \dfrac{3 \times 3}{4 \times 3}  +17  \dfrac{1 \times 3 }{4 \times 3}  +23  \dfrac{2 \times 4}{3 \times 4}

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Combine into single fraction
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6 0
2 years ago
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dezoksy [38]

Answer: $7.95+$1t ?

Step-by-step explanation:

7 0
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A scientist measures a substance to be 0.8 grams. Calculate the percent of error in the measurement. Show all work for full cred
Volgvan
You'll need to give a bit more information for the question to be answered. You can only calculate the percentage of error if you know what the mass of the substance *should be* and what you've *measured* it to be.

In other words, if a substance has a mass of 0.55 grams and you measure it to be 0.80 grams, then the percent of error would be:

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So, in order to calculate the percent of error, you'll need to know what these two measurements are. Once you know these, plug them into the formula above and you should be all set!
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