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Naddika [18.5K]
3 years ago
12

Rosa has 55 books and gives 5 of them to her friend. How many does she have left?

Mathematics
1 answer:
Alecsey [184]3 years ago
7 0

Answer:

55-5

50 books she has left

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If two angles in a triangle measure and x degrees, then the third angle measures (90 − x) degrees.
Dmitriy789 [7]

Answer:

30° ,60° or 45 °,45°

Step-by-step explanation:

please mark as brainlist answer

6 0
3 years ago
Which shapes are similar?
shtirl [24]

Answer:

3

Step-by-step explanation:

Since the shapes are similar this means they are equal.

If the ratio is 2:1 that would mean divide each number by 2.

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4 0
2 years ago
Add. 523.71 + 0.55 = ?
Crank
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The first step is lining up the decimals.
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5 0
3 years ago
Read 2 more answers
the ratio of pencils to erasers is 4 to 1 if there are 20 pencils how many eraces are there please show ow work
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4 0
3 years ago
Here is a table showing all 52 cards in a standard deck.
stepan [7]

We want to find the probability of drawing 3 red cards from a deck of 52 cards.

We will find that the probability is P = 0.1176

Let's see how to get that probability.

We know that a standard deck of 52 cards has:

  • 26 red cards
  • 26 black cards

And we assume that all the cards have the same probability of being drawn. Then the probability of drawing a red card in the first draw is just the quotient between the number of red cards and the total number of cards, we get:

p₁ = 26/52

For the second draw, we compute the probability in the same way, but now there are 25 red cards in the deck and 51 cards in total (because one is already drawn). Then the probability in this case is:

p₂ = 25/51

Finally, for the third card, we have 24 red cards and 50 total cards, then the probability will be:

p₃ = 24/50

The joint probability (the probability of drawing the 3 red cards in the same event) is the product of the individual probabilities.

P = p₁*p₂*p₃ = (26/52)*(25/51)*(24/50) = 0.1176

If you want to learn more, you can read:

brainly.com/question/10224828

8 0
3 years ago
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