Answer:
A
Step-by-step explanation:
I took the test just for you
Answer:
.
c)"At least 1 O+" is equivalent to "not none O+" (forgive the incorrect English).
P(not none O+)+P(none O+)=1
P(not none O+)=1-P(none O+)
P(not none O+)=1-0.00491
P(at least 1 O+)=0.995
Step-by-step explanation:
First, simplify the denominator into 1+3i. Then multiply both the numerator and denominator by 1-3i to rationalize the denominator. Then, the numerator becomes i+3, and the denominator becomes 10. So, the first answer is correct.