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Irina18 [472]
3 years ago
12

Two number cubes are rolled. What is the probability of rolling a sum of 9 or a sum that is even?

Mathematics
2 answers:
Murljashka [212]3 years ago
8 0

Well I don't know !
Let's figure it out together.

Each cube can land in 6 different ways, so the total number
of possible results with two cubes is (6 x 6) = 36 .

Now we need to figure out how many of those 36 possibilities
meet your specifications ... either 9 or any even number.

Ways to make 9 :

3 . . . 6
6 . . . 3
4 . . . 5
5 . . . 4

Four ways to make 9.
____________________________

Ways to make an even number:

1 . . . 1
3 . . . 1
1 . . . 3
2 . . . 2
5 . . . 1
1 . . . 5
6 . . . 2
2 . . . 6
6 . . . 4
4 . . . 6
6 . . . 6

Eleven ways to make an even number.
_____________________

Total number of ways to succeed = (4 + 11) = 15 ways

So the probability of succeeding (rolling 9 or an even number)
is

               15 / 36  =  5 / 12  =  0.41666... =  (41 and 2/3) % .

elixir [45]3 years ago
5 0
Two dice are thrown and the only possibilities are rolling 2-12. we are trying to find the probability of rolling a 2,4,6,8,9,10,12
7 out of 11 is the probability of rolling a 9 or an even
You might be interested in
Refer to the following information:
Brilliant_brown [7]

Answer:

Step-by-step explanation:

Hello!

A: "Method A is used" and the probability of using it is P(A)= 0.75

B: "Method B is used" and its associated probability P(B)= 0.25

L: "The skill was learned"

"Learning the skill given that the method A is used" is a conditional probability, you can also say that "the skill was learned because method A was used", symbolically P(L/A)= 0.8

"Learning the skill given that method B is used" or "the skill was learned because method B was used", symbolically: P(L/B)= 0.95

1) Which of the following is the correct representation of the information that is provided to us?

Correct option: a.P(A)= .75, P(B) = .25, P(L |a) =. 80, P(L | B) = .95

2) What is the probability that a worker will learn the skill successfully?

You need to calculate the probability of L occuring, symbolically: P(L)

If you were to put all possible options in a contingency table:

A B Total

L P(A∩L) ; P(B∩L) ; P(A∩L) + P(B∩L) = P(L)

You can easily notice that the probability of learning the skill is the sum of the probabilities of "learning the skill and using method A" plus "learning the skill and using method B" These two intersections are unknown so first you apply the formula of conditional probability to find them out:

P(L/A)= P(A∩L)/P(A) ⇒ P(A∩L)= P(A)*P(L/A)= 0.75*0.80= 0.6

P(L/B)= P(B∩L)/P(B) ⇒ P(B∩L)= P(B)*P(L/B)= 0.25*0.95= 0.2375

P(L)= P(A∩L) + P(B∩L)= 0.6 + 0.2375= 0.8375

Correct option: e.P(L) = .75 * .80 + .25 * .95 = .8375

I hope you have a SUPER day!

5 0
3 years ago
7 = 3x − 5? What does X equal
Anit [1.1K]
7=3x-5
12=3x
4=x
Hope this helps
3 0
3 years ago
Last year there were 221 students and 13 teachers at Hillard School. This year there are 272 students. The principal wants to ke
weeeeeb [17]
221 / 13  =  272 / x 

Hope this helps.
4 0
3 years ago
Read 2 more answers
8x+y=300
Bond [772]
D. The elevator takes 37.5 seconds to move down to the lobby.


8x+y=300

y= 300-8x
y= 300 - 8 (37.5)

y = 300-300
y = 0

wheb y =0 that means that the height is 0
5 0
3 years ago
James has worked full time as an entry-level web designer since earning his certification. He
Norma-Jean [14]

A budget is a periodical compilation of the estimated revenue earned and expenses incurred within a given time period

Monthly income calculation

James monthly income is calculated as follows;

Monthly income = \dfrac{\$47,000}{12} \approx \$ 3,916.\overline 6

The required <u>James' monthly personal budget </u>is presented as follows;

Based on the above monthly income, the monthly personal budget is found by entering the given values in a budget template as follows;

\begin{array}{lllc}& Incone &\$3,916.6 \\&Rent&\$950\\&Insurance \ (renter's)&\$25\\&Insurance \ (health)&\$185\\&Retirement \ (401 (k))&\$157\\&Car \ insurance &\$120 \\Fixed \ expenses&Utilities&\$100 &\\&Cell \ phone &\$85 &\\&Cable \ TV& \$70 &\\&Credit \ card& \$150 \\&Car \ payment&\$554\\&\underline{ \mathbf{Total \ fixed \ expenses}}& \$2,396 \\&&\\&Clothing& \$80 & \\Variable \ expenses&Groceries& \$300 \\&Entertainment&\$196 \\&\underline{ \mathbf{ Total \ variable \ expenses}}&\$576 \end{array}

                                Savings   {}                             $944.\overline 6

Learn more about how to make a budget here:

brainly.com/question/14080312

5 0
2 years ago
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