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lapo4ka [179]
3 years ago
13

Describe the energy transformations that occur when you burn a piece of wood

Mathematics
1 answer:
Nesterboy [21]3 years ago
3 0
The wood burns into an ash.

Chemical change.
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Christina rolls a number cube twice.What is the probability she rolls a prime number and then an odd number?
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The probability is 3/6 (1/2) as there are 3 prime numbers on a dice (2,3,5) and also 3 odd numbers on a dice (1,3,5)
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6.28 x^2 + 43.96 x + 62.8 + 12.56 x + 25.12
Anuta_ua [19.1K]
The correct answer is 157
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4 years ago
Select the correct answer.
ss7ja [257]

Answer:

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3 years ago
If you choose two cards at random from a deck of 52 cards, what is the probability that it is two diamonds?
kari74 [83]
<h3>Answer:</h3>

1/17 or 0.0588 (without replacement)

<h3>Step-by-step explanation:</h3>

To answer this question we need to know the following about a deck of cards

  • A deck of cards contains 4 of each card (4 Aces, 4 Kings, 4 Queens, etc.)
  • Also there are 4 suits (Clubs, Hearts, Diamonds, and Spades).
  • Additionally, there are 13 cards  in each suit (Clubs/Spades are black, Hearts/Diamonds are red) .

In this case, we are required to determine the probability of choosing two diamonds.

  • There are 13 diamonds in the deck.
  • Assuming, the cards were chosen without replacement;

P(Both cards are diamonds) = P(first card is diamond) × P(second card is diamond)

P(First card is diamond) = 13/52

If there was no replacement, then after picking the first diamond card, there are 12 diamond cards remaining and a total of 51 cards remaining in the deck.

Therefore;

P(Second card is diamond) = 12/51

Thus;

P(Both cards are diamonds) = 13/52 × 12/51

                                               = 156/2652

                                              = 1/17 or 0.0588

Hence, the probability of choosing two diamonds at random (without replacement) is 1/17 or 0.0588.

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4 years ago
Solve the equation-54-9g
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-68hen you enter an equation into the calculator, the calculator will begin by expanding (simplifying) the problem.
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3 years ago
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