Answer:
-4xy +6x
Step-by-step explanation:
combine like terms
-2xy + 3x - 2xy + 3x
3x + 3x = 6x
-2xy - 2xy = -4xy
-4xy +6x
the simplified expression is:
6s + 9
Answer:
Step-by-step explanation:
women=85+32=117
men=70+51=121
total=117+121=238
a. P(woman)=117/238
b. P(woman or summer)=p(woman)+P(summer )-P(woman and summer)
=117/238+155/238-85/238
=187/238
c. P(woman and summer)=85/238
Answer:
Step-by-step explanation:
a) If events A and B are independent we have
P(A/B) =P(A)
But here P(A/B) = 0.8 and P(A)=0.2
Hence A and B are not independent.
b) If events A and B are independent we have
P(A/B) =P(A)
But here P(A/B) = 0.6 and P(A)=0.3
Hence A and B are not independent.
c) If events A and B are independent we have
P(A/B) =P(A)
Jere P(A/B) = 0.5 and P(A)=0.5
Hence A and B are independent.
