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frez [133]
3 years ago
7

Suppose that a single die with 9 sides (numbered 1, 2, 3, ... , 9) is rolled twice. What is the probability that the sum of the

two rolls equals 3
Mathematics
1 answer:
Darina [25.2K]3 years ago
8 0

Answer:

<h2>2/81</h2>

Step-by-step explanation:

Probability is defines as the likelihood or chance that an event will occur.

Probability = expected outcome of event/total outcome.

Since a single die with 9 sides was rolled, the total event outcome will be 9*9 = 81

Expected outcome will be the event that the sum of the two rolls equals 3. The possible outcomes are {(1,2), (2,1)}. The expected outcome is 2

Probability that the sum of the two rolls equals 3 = 2/81

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D’Andra has a dentist appointment in 5 weeks. There are 7 days in a week. How many days are in 5 weeks?
Lisa [10]

Answer:

A. 35

Step-by-step explanation:

Each week has 7 days, and we have 5 weeks.

Week 1 has 7 days.

Week 2 has 7 days.

Week 3 has 7 days.

Week 4 has 7 days.

Week 5 has 7 days.

We can add all these together to get the total number of days: 7 + 7 + 7 + 7 + 7 = 7 * 5 = 35.

Thus, the answer is A.

Hope this helps!

8 0
3 years ago
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Write 0.9 as a fraction with a denominator of 10
adelina 88 [10]
The answer is 9/10
the denominator is on the bottom
5 0
3 years ago
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The domain for variables x and y is the set {1, 2, 3}. The table below gives the values of P(x, y) for every pair of elements fr
Olin [163]

Answer:

Option B and C are correct answers.

Step-by-step explanation:

Option B and C are the correct options.

Option a is true since row 1 has all T.

so for X=1, P(x,y) is true for all y.

Option b is false since no column has all F.

Option C is false since no column has all F.

Option D is true since 1st row has all T.

hence option B and C are correct answers.

7 0
3 years ago
Lincoln High schools basket ball team won the regional playoffs scoring a total of 60 points, not including free throws. The tea
CaHeK987 [17]

Answer: 18

Step-by-step explanation:

Let x be the number of 2 point baskets made and y be the number of 3 point baskets made

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1) x + y = 26

:

2) 2x + 3y = 60

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solve equation 1 for x and substitute in equation 2

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x = 26 - y

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2(26 - y) +3y = 60

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52 -2y +3y = 60

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y = 8

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x = 26 - 8 = 18

:

******************************

The team made 18 2-point shots

5 0
3 years ago
1 5/6 divided by 5/6
marshall27 [118]
15 /6÷ 5/6
when we divide fractions we do the reciprocal of the second number that is of
5/6 = 6/5 and then multiply it by the first number
15/6 x 6/5
ans) 3 

6 0
4 years ago
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