Answer: A>7
Step-by-step explanation:
Answer: ×=1.29
Step-by-step explanation:
Open the brackets
-12x +9 +5x
-12x+5x=-9
-7x= -9
Divide both sides by -7
X=9/7 =1.29
Answer:
15
Step-by-step explanation:
3 120/10
Answer:
sorry im not smart lol
Step-by-step explanation:
We're told that
where the last fact is due to the law of total probability:
so that and are complementary.
By definition of conditional probability, we have
We make use of the addition rule and complementary probabilities to rewrite this as
By the law of total probability,
and substituting this into gives