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topjm [15]
3 years ago
14

2a−1/2 please help me :(

Mathematics
1 answer:
Korvikt [17]3 years ago
3 0

Answer:

this is unsolvable i think

Step-by-step explanation:

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Consider rolling two fair dice one 3-sided the other 5-sided
Ne4ueva [31]

Since the dice are fair and the rolling are independent, each single outcome has probability 1/15. Every time we choose

1\leq x\leq 3,\quad 1\leq y \leq 5

We have P(X=x)=\frac{1}{3} and P(Y=y)=\frac{1}{5}, because the dice are fair.

Now we use the assumption of independence to claim that

P(X=x, Y=y) = P(X=x)\cdot P(Y=y) =\dfrac{1}{3}\cdot\dfrac{1}{5} = \dfrac{1}{15}

Now, we simply have to count in how many ways we can obtain every possible outcome for the sum. Consider the attached table: we can see that we can obtain:

  • 2 in a unique way (1+1)
  • 3 in two possible ways (1+2, 2+1)
  • 4 in three possible ways
  • 5 in three possible ways
  • 6 in three possible ways
  • 7 in two possible ways
  • 8 in a unique way

This implies that the probabilities of the outcomes of W=X+Y are the number of possible ways divided by 15: we can obtain 2 and 8 with probability 1/15, 3 and 7 with probability 2/15, and 4, 5 and 6 with probabilities 3/15=1/5

8 0
3 years ago
Which number line model shows 8 x 1/2
77julia77 [94]

Answer:

do you have a picture i would help then

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How many gallons of gas is in my tank?
weqwewe [10]

F(180) = x/30

= 180/30 = 6 gallons of gas is needed

5 0
3 years ago
A truck travels from a factory to a gas station in 2 minutes. It stops at the gas station for 5 minutes. The truck then returns
guapka [62]

Answer:

caluta the answer

Step-by-step explanation:

x=16

6 0
3 years ago
You invest $700 in an account that pays an interest rate of 6.5%, compounded continuously.
Nina [5.8K]
Please include the instructions when you post a question.  Thanks.

Use the formula A = P*e^(rt).

Here, A = $700*e^(0.065*t), where t is the # of years (which you have not yet included in your post).

As an example:  After 2 years you'll have   A = $700*e^(0.065*2), or A=$797.18, in your account.
5 0
3 years ago
Read 2 more answers
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