Solve the quadratic equation by completing the square. What are the missing pieces to the steps?
1 answer:
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Answer:
y = -4x - 1
Step-by-step explanation:
x - 4y = 24
-4y = -x + 24
y = x - 6
m⊥ = -4
y = -4x + b
7 = -4 ( -2 ) + b
7 = 8 + b
b = -1
y = -4x - 1
Answer:
0.6667 or 66.67%
Step-by-step explanation:
Since the waiting time is normally distributed between 0 and 6 minutes, for any time 'x' within the interval, the probability the waiting time is longer than 'x' is given by:
For x = 2 minutes:
The probability that she will have to wait more than two minutes 0.6667 or 66.67%