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charle [14.2K]
3 years ago
15

Mac's age is 3 years less than twice Joe's age. The sum of their ages is 30. Find their ages.

Mathematics
1 answer:
k0ka [10]3 years ago
4 0

Answer:

Mac is 19 years old, Joe is 11 years old

Step-by-step explanation:

2J - 3 = M

J + M = 30

M = 30 - J

2J - 3 = 30 - J

3J = 33

J = 11

M = 30 - 11

M = 19

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Answer: You have a better chance if you do not replace the red marble.

Step-by-step explanation:

The bag has:

5 red marbles

8 blue marbles

4 yellow marbles

3 green marbles

A total of 5 + 8 + 4 + 3 = 20

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now you want to draw a blue marble.

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The probability is slightly bigger if you do not replace the red marble.

7 0
4 years ago
Read 2 more answers
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