Question 81
If the probability of event A is 0.3 and event B is 0.5, and events are mutually exclusive, what is P(A ∪ B)?Statistics and probabilityProbabilitymedium
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Question 82
Given f(x) = 2x + 3, what is f^-1(11)?Functions and graphsInverse functionsmedium
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Question 83
If \(x^2 - 5x + 6 = 0\), what are the values of \(x\)?Quadratic equationsLinear, quadratic, and cubic equationseasy
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Question 84
If \(f(x) = 3x - 7\), what is \(f^{-1}(x)\), the inverse function?Functions and graphsFunctions and graphsmedium
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Question 85
The sum of the first 6 terms of an arithmetic progression is 108. If the first term is 7 and the common difference is \(d\), what is \(d\)?Sequences and seriesSequences and serieshard
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