(-x)+2•4/2=6
-x+8/2=6
-x+8=12
-x=4
x=-4
I think the answer is D, I've been told it's D by many people.
7 + 28n + 4
28n + (7 + 4)
28n + 11
Answer: 1.48
Step-by-step explanation:
Answer:
1.4
Step-by-step explanation:
Probability of selecting a red counter :
Number of red counter / total number of counters
5 / (5 + 3) = 5 /8 = 0.625
Probability of selecting a blue counter = 0.375
Let number of red counters :
0, 1 or 2
0 red counters :
Expected value = x * p(x)
0 + (0.625*1) + (0.390625 * 2)
0 + 0.625 + 0.78125 = 1.40625
Expected number of red counters = 1.4
