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s2008m [1.1K]
3 years ago
11

joey ate 1/2 of the pie. molly ate 1/2 of what was left. lola ate 1/2 of what was lefet after molly finished. what fractional pa

rt of the pie did molly eat? what fractional part of the pie is left for another person?
Mathematics
1 answer:
anzhelika [568]3 years ago
8 0
Molly ate 1/4 and then the last one is 1/8
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Solve the following equation:<br>m - m-1/2 = 1 - m-2/3​
grigory [225]

Answer:

m = \frac{7}{5}

Step-by-step explanation:

m - \frac{m-1}{2} = 1 - \frac{m-2}{3}

Multiply through by 6 ( the LCM of 2 and 3 ) to clear the fractions

6m - 3(m - 1) = 6 - 2(m - 2) ← distribute parenthesis on both sides

6m - 3m + 3 = 6 - 2m + 4 , that is

3m + 3 = - 2m + 10 ( add 2m to both sides )

5m + 3 = 10 ( subtract 3 from both sides )

5m = 7 ( divide both sides by 5 )

m = \frac{7}{5}

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3 years ago
The radius of a circular rug is 4 feet. How much ribbing will you need to buy to go around the rug? Use 3 for i.
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Step-by-step explanation:

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2 years ago
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Eighteen increased by the product of three times a number w is 30. Find the number.
faltersainse [42]

Answer:

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Use the counting techniques from the last chapter. A bag contains three red marbles, four green ones, one fluorescent pink one,
sergiy2304 [10]

Answer:

The probability that she gets all the red ones, given that she gets the fluorescent pink one, is P=0.0035 or 0.35%.

Step-by-step explanation:

Susan grabs four marbles at random.

We have to calculate the probabilities that he picks the 3 red ones, given that she already picked the fluorescent pink.

If it is given that the fluorescent pink is already picked, we are left with three red marbles, four green ones, two yellow ones, and four orange ones. A total of 13 marbles.

The probability that the second marble is red is 3 in 13.

The probability that the third marble is also red is 2 (the red marbles that are left) in 12 (the total amount of marbles left), as there is a picking without replacement.

The probability that the fourth marble is 1 in 11.

Then, the probability that the 3 red marbles are picked, is:

P=P_1\cdot P_2\cdot P_3=\dfrac{3}{13}\cdot \dfrac{2}{12}\cdot \dfrac{1}{11}=\dfrac{6}{1716}=0.0035

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3 years ago
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vlabodo [156]

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A= 15*6

A=90

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