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Whitepunk [10]
1 year ago
12

A coin is thrown 3 times. What is the probability that at least one head is thrown?.

Mathematics
2 answers:
zvonat [6]1 year ago
3 0

Answer:7/8

A coin is tossed 3 times. The probability of getting at least one head is 7/8.

swat321 year ago
3 0

Answer:

1/3

Step-by-step explanation:

1 head,3 times

probability 1/3

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Suppose that you draw two cards from a deck. After drawing the first card, you do not put the first card back in the deck. What
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Answer:

(B) 0.0588

Step-by-step explanation:

The probability is calculated as a division between the number of possibilities that satisfy a condition and the number of total possibilities. Then, the probability that the first card is diamonds is:

P_1=\frac{13}{52}

Because the deck has 52 cards and 13 of them are diamonds.

Then, if the first card was diamonds, the probability that the second card is also diamond is:

P_2=\frac{12}{51}

Because now, we just have 51 cards and 12 of them are diamonds.

Therefore, the probability that both cards are diamonds is calculated as a multiplication between P_1 and P_2. This is:

P=\frac{13}{52}*\frac{12}{51}=\frac{1}{17}=0.0588

8 0
2 years ago
an actor gains 20pounds for a part and then losses 15 pounds during the filming of the movie to go along with the story.who do y
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Let the actor's initial weight be 'x'

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He then loses 15 pounds. The clue is in the word 'losses' as it means 15 pounds is to be subtracted from the last value

Last value is x + 20
The weight now is x + 20 - 15 = x + 5
7 0
3 years ago
EASY MATH GOOD POINTS
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Answer:

t = (D/C - 1) (100/r)

Step-by-step explanation:

D = C(1+rt/100)

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D/C - 1 = t (r/100)

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8 0
3 years ago
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The perimeter of a rectangular painting is 310 centimeters. If the width of the painting is 56 centim
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Answer:

The length is 99 cm

Step-by-step explanation:

The perimeter of a rectangle is

P = 2 (l+w)

310 = 2( l+56)

Divide each side by 2

310/2 = 2/2( l+56)

155 = l+56

Subtract 56

155-56 = l+56-56

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7 0
2 years ago
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Solve c= 8a-3b for a
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Answer:

(c+3b)/8 = a

Step-by-step explanation:

c= 8a-3b

Add 3b to each side

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Divide each side by 8

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3 years ago
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