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allochka39001 [22]
3 years ago
11

A single die is rolled twice. Find the probability of rolling an odd

Mathematics
1 answer:
melisa1 [442]3 years ago
4 0

Step-by-step explanation and answer:

The 6 sides of the die are numbered 1,2,3,4,5,6

There are 3 odd and 3 even numbers

probability of an odd number on 1st roll is:

3/6=1/2

When you want A AND B probabilities, you multiply

the events A and B

The number less than 3 are 1,2, so the probability is:

2/6=1/3

so the probability of both events are going to be:

(1/2) *(1/3)=1/6

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1) 9.1 = -0.2x + 10         | - 10

9.1 - 10 = -0,2x + 10 - 10

-0.9 = -0.2x            | × 10

-0.9 × 10 = -0.2x × 10

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9/2 = x

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2) 10 = 9.1 + 0.2x         | - 9.1

10 - 9.1 = 9.1 + 0.2x - 0.9

0.9 = 0.2x             | × 10

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9 = 2x              | ÷ 2

9 ÷ 2 = 2x ÷ 2

9/2 = x

x = 4.5

3) 10 - 0.2x = 9.1             | - 10

-0.2x = -0.9                | × 10

-2x = -9               | ÷ (-2)

x = 9/2

x = 4.5

4) 9.1 - 10 = 0.2x

-0.9 = 0.2x              | × 10

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Answer: The last one equation gives a different value of x.

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