Answer:
-12x^2+42x-6
Step-by-step explanation:
Prob (8) = 4/52 = 1/13
Prob(Queen) = 4/52 = 1/13
Prob ( 8 then a queen) = 1/13 * 1/13 = 1/169 answer
The probabilities are multiplied beause the 2 events are independent
Answer:
53.2 kg
Step-by-step explanation:
Let E represent Esther's weight. Then Henry's weight is E/2, and David's weight is E-5.2. Their average weight is ...
((E-5.2) + E + (E/2))/3 = 42.6
2.5E -5.2 = 127.8 . . . . . . . . . . multiply by 3, simplify
2.5E = 133 . . . . . . . . . . . . . . . . add 5.2
E = 133/2.5 = 53.2 . . . . kg
Esther's weight is 53.2 kg.