Wolfgirl2032
30.07.2020 •
Mathematics
Solve for x in the equation x squared + 11 x + 121/4 = 125/4.
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Ответ:
Step-by-step explanation:
x² + 11x + 121/4 = 125/4
x² + 11x + 121/4 - 125/4 = 0
x² + 11x - 1 = 0
after that apply quadratic formula
x = ( -b + or - √b² - 4ac ) ÷ 2a
x = (-11 + or - √11² - 4×1×-1 ) ÷ 2×1
+ = 0.090169
- = -11.090168
x = 0.090 or x = -11.09
Ответ:
P(B and A) = .3 + .10 = .13 P(A)= .3
So,
P(A|B)= .13/.3
P(A|B)= 0.43333...