Suppose that of 1400 students, 550 take Spanish, 700 take biology, and 400 take both
1 answer:
Answer:
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Explanation:
<u>1. Call A the event of selecting a student who takes Spanish and P(A) the corresponding probability:</u>
- P(A) = number of students who take Spanish / number of students
- P(A) = 550 / 1400 = 11/28
<u>2. Call B the event of selecting a student who takes biology and P(B) the corresponding probability:</u>
- P(B) = number of students who take biology / number of students
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<u>3. The joint probability, P(A∩B), is the probability that a student takes Spanish and biology:</u>
- P(A∩B) = number of students that take both Spanish and biology / number of students
<u>4. By the properties of probabilities, the probability of the event A or B is:</u>
- P (A or B) = P (A∪B) = P(A) + P(B) - P(A∩B)
- P(A or B) = 11/28 + 1/2 - 2/7 = (11 + 14 - 8) / 28 = 17/28
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Hope this helps mate
Answer:
- 5/7 - (3/14 + 3/14) = 2/7
See the steps of solution:
- 5/7 - (3/14 + 3/14) = Solve parenthesis first
- 5/7 - (3 + 3)/14 = Add fractions with same denominator
- 5/7 - 6/14 = Simplify
- 5/7 - 3/7 = Subtract fractions with same denominator
- (5 - 3)/7 = Simplify
- 2/7 Answer
9 hundreds=900 9 thousands=9,000
I'm guessing you want an equation.
In that case, the equation would be $2x =y
Answer:
2(4+x)
Step-by-step explanation: