Everyone should do this derivation, because otherwise the "quadratic formula" is some sort of "magic" LOL...
ax^2+bx+c=0
x^2+bx/a+c/a=0
x^2+bx/a=-c/a
x^2+bx/a+b^2x/(4a^2)=b^2/(4a^2)-c/a
(x+b/(2a))^2=(b^2-4ac)/(4a^2)
x+b/(2a)=±√(b^2-4ac)/(2a)
x=-b/(2a)±√(b^2-4ac)/(2a)
x=(-b±√b^2-4ac)/(2a)
For 1 hour = $12
for 2 1/4 OR 9/4 hour, it would be = 12*9/4 = $27
so, your answer is $27
Answer:
The probability that you made this call is 0.8639.
Explanation:
Parameter for you = λ1 = 2
⇒ β1 = 1 / λ1 = 1 / 2 = 0.5
Parameter for Janice = λ2 = 4
⇒ β2 = 1 / λ2 = 1 / 4 = 0.25
Probability that you made a for 0.5 hours or more:
Probability that Janice made a for 0.5 hours or more:
Overall probability that a call was made for 0.5 hours of more
= (0.7 x 0.3679) + (0.3 x 0.1353)
= 0.2981
Probability that you made the given call
= 0.7 x 0.3679 / 0.2981
= 0.8639
Answer:
Step-by-step explanation:
<u>Increase of production:</u>
<u>Percent increase:</u>
ANSWER:
p=5
explanation:
distribute the -6 and simplify