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Alecsey [184]
3 years ago
10

Help me out would you please?

Mathematics
2 answers:
elena55 [62]3 years ago
7 0

Answer:

7a-28

Step-by-step explanation:

Sliva [168]3 years ago
5 0

Answer:

7a-28

Step-by-step explanation:

To expand this simply multiply both pieces of the inside by 7.

7a - 28

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If P(A) = 1/6 , P(B) = 5/12, and P(A\B) + P(B\A) = 7/10 Find P(AUB)
Nesterboy [21]

Probability is the likelihood or chance that an event will occur. The probability of P(AUB) is 1/2

<h3>Conditional probability</h3>

Probability is the likelihood or chance that an event will occur. Given the following parameters

If P(A) = 1/6

P(B) = 5/12

P(A\B) + P(B\A) = 7/10

Required

p(AUB)

Recall that:

P(A|B)=P(AnB)/P(B)

P(B|A) = P(BnA)/P(A)

P(AnB)/P(B) + P(BnA)/P(A) = 7/10
12/5P(AnB) + 6P(BnA) = 7/10

42/5P(BnA) = 7/10
6/5P(BnA) = 1/10
6P(BnA) = 1/2
P(BnA) = 1/12

<u>Determine P(AUB)</u>

P(AUB) = P(A) + P(B) - P(AnB)
P(AUB) = 1/6 + 5/12 - 1/12
P(AUB) = 1/6 + 4/12
P(AUB) = 2+4/12
P(AUB) = 1/2

Hence the probability of P(AUB) is 1/2

Learn more on probability here: brainly.com/question/24756209

6 0
3 years ago
abigail has 1/2 gallon of orange juice. She divides the juice equally into 6 glasses. What equation represents the fraction of a
gavmur [86]
There are 1/12 gallons of orange juice in each cup
3 0
4 years ago
Determine whether or not the given procedure results in a binomial distribution. If not, identify which condition is not met. Sp
alisha [4.7K]

Answer:

We conclude that is the binomial distribution.

Step-by-step explanation:

We know that the binomial distribution describes the probability of k successes in n draws with replacement.

We know that:  Spinning an  American roulette wheel 45 times and recording the number of times the ball lands on green.

So with each new turn, we have the same opportunity for the ball to be on the green.

We conclude that is the binomial distribution.

7 0
3 years ago
Which of the following does NOT give you congruent angles?
kirill115 [55]

Answer:

Triangle Sum Theorem

Step-by-step explanation:

These do not give you congruent angles

6 0
3 years ago
To obtain an estimate of the proportion of "full time" university students who have a part time job in excess of 30 hours per we
musickatia [10]

Answer:

2,436 students

Step-by-step explanation:

At a 90% confidence level, the z-score is 1.645 and the confidence interval is given by:

x\pm z\frac{s}{\sqrt n}

Where s is the standard deviation, and  n is the sample size.

If they want the length of their confidence interval to be no greater than 0.2, it must be no further than 0.1 from the mean 'X':

0.1>1.645\frac{3}{\sqrt n}\\\sqrt n>1.645*30\\n>2,435.42

Rounding up to the next whole number, the sample size should be 2,436 students.

5 0
4 years ago
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