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kakasveta [241]
3 years ago
11

A positive real number is 4 more than another. When -8 times the smaller is added to

Mathematics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

Step-by-step explanation:

x = y+4

x > y

x² - 8y = 61

(y+4)² - 8y = 61

y² + 8y + 16 - 8y = 61

y² + 16 = 61

y² = 45

y = √45 = 3√5

x = y+4 = 4+3√5

3√5 and 4+3√5

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Two number cubes are rolled. What is the probability that the sum of the numbers rolled is either 4 or 8?
sveticcg [70]

There are 6 numbers on each die.

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To get a sum of 4, the combinations are: 1 & 3, 2 & 2 or 3 & 1.

To get a sum of 8, the combinations are: 1 & 7, 2 & 6, 3 & 5, 4 & 4, 7 & 1, 6 & 2, 5 & 3


The total of those combinations are:  3  + 7 = 10 total combinations of a sum of either 4 or 8.


The probability of either is 10/36, which can be reduced to 5/18.

8 0
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Harrizon [31]
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3 years ago
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Anni [7]

Answer:

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Read 2 more answers
Value of X and Y please
morpeh [17]
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360 = 80 + 90 + 150 + y

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M<X=100
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