Question
What will be the value of P(not E) if P(E) = 0.07?
Solution
If the probability of happening of an event P(E) and that of not happening is P(E), then P(E) + P(not E) = 1 So, P(not E) = 1 - P(E) Since P(E) = 0.07 P(not E) = 1 - 0.07 P(not E) = 0.93
I. 8a2 – 22a+ 15 = 0
II. 12b2 - 47b + 40=0
I. 2x2 – 5x – 12 = 0
II. 2y2 + 13y + 20 = 0
For 3x² − 10x − 8 = 0, find (1/α + 1/β).
I. x2Â - 9x - 52 = 0
II. y2Â - 16y + 63 = 0
I. 10x2 + 33x + 9 = 0
II. 2y2 + 13y + 21 = 0
I. 3x2 - 16x - 12 = 0
II. 2y2 + 11y + 9 = 0
I. 2y² - 11 y + 15 = 0
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I). 5p2 Â - p - 4 = 0
II). q2 - 12q + 27 = 0
If the roots of the quadratic equation 5x² + 4x + 6 = 0 are α and β, then what is the value of [(1/α) + (1/β)]?
...I. y/16 = 4/yÂ
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