A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red marble is 1 in 5. Yasmine returns the marble to the bag and adds ﬁve more red marbles to the bag. The probability that she takes one red marble at random is now 1 in 3. How many red marbles were originally in the bag?

Answers

Answer 1

Answer: There was one red marble because it said that the probability of choosing a red marble is 1/5 so the other marbles are blue.
Hope this helps.

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the fair committed wants to decorate each ride with 40 balloons there are 13 rides if balloonso come 24 package how many package will needed

Answers

14x30=520. So, 520 divided by 24 = 21.6 . So, that means that you will need 22 packages of balloons and you will have 8 left over

22 r.8
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Anna and Charles have a bag that contains 1 black marble and 1 white marble. They are playing a game where they randomly select a marble out of the bag three times, with replacement Anna thinks that the probability of getting a black marble on the first selection and a black marble on the third selection is greater than the probability of getting a black marble on the first selection and a white marble on the third selection. Charles disagrees. He thinks that the two probabilities are equal. The sample space of possible outcomes is listed below. B represents a black marble, and W represents a white marble. Who is correct, Anna or Charles?

Answers

Answer: Charles

Step-by-step explanation:

Either it is the third selection or the first, what matters is that there is only one white ball and 1 black ball.

Answer:

Charles is correct

Step-by-step explanation:

Khan Academy

a cookie recipe calls for a half cup of chocolate chips per 3 dozen cookies. How many cups of chocolate chips should be used for 10 dozen cookies?

Answers

The number of cups of chocolate chips that should be used for 10 dozen cookies is 1 2/3 cups.

Based on the information given, the expression to solve the question will be:

0.5/3 = x/10

Cross multiply

3 × x = 0.5 × 10

3x = 5.

x = 5/3

x = 1 2/3 cups

Therefore, the number of cups of chocolate chips that should be used for 10 dozen cookies will be 1 2/3 cups.

Read related link on:

brainly.com/question/11164105

To answer this question, you should set up a proportion that demonstrates the ratio of chocolate chips to cookies.

$(0.5)/(36) =(x)/(120)$

36 and 120 are used because 1 dozen=12.

Cross multiply and solve for x to get the answer.

$60=36y$

$(5)/(3)=x$

The answer is $(5)/(3)$ cups.

Marge has saved $350 toward the costof her vacation. The vacation will cost
$1,750. What percent of the cost of the
vacation has Marge saved?
Show all work!!!

Answers

She has saved 20% so far.
350 / 1,750 = .2

The temperature in the morning was 3°F the temperature dropped 11° by night what was the temperature at night

Answers

Answer:

Temperature at night was -8°F

Step-by-step explanation:

Since the temperature in the morning was 3°F and it dropped that means reduced by 11° at night,

Then the temperature at night was

(3° - 11°) F = -8°F

Kim bought a poster that cost $8.95 and a ome colored pencils.The total cost was $21.35.How much did the colored pencils cost?

Answers

if the total cost was 21.35, and the poster cost 8.95, then all you need to do is subtract to poster cost from the total cost to find the cost of the pencil.
21.35-8.95= $12.40

$21.35 - $8.95 = your answer: 12.4

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