$0.09 per cookie
first, you subtract $2.25 from $5.40 to get $3.15.
then, you divide $3.15 by 35 and you get $0.09.
Hope this helps!(:
Answer:
Step-by-step explanation:
Keep 
and group -3x+8x which becomes 5x. Then keep -6.
Then it becomes the answer above.
Answer:
You multiply 5 by 1/5 to get 1. So with 2x, you multiply by 1/(2x) to get 1. That's about all you know, since we only know that x is positive.
Step-by-step explanation:
Answer:
a) 0.8333
b) 0.75
c) 0.8181 or 0.9090
Step-by-step explanation:
a)
The probability the visitor selects an authentic painting is
10/12 = 0.8333
b)
Since the opinion of the expert does not depend on your choice, the events are <em>independent</em>, so the probability that the expert says is authentic and it really is, is
0.8333*0.9 = 0.75
c)
If the expert decides the painting is a copy and it is not, then there are 11 paintings of which 9 are authentic, so the probability the visitor selects a new original painting is
9/11= 0.8181
If the expert decides the painting is a copy and it is, then there are 11 paintings of which 10 are authentic, so the probability the visitor selects a new original painting is
10/11= 0.9090
24
x
^2
+
54
x
+
21,
if you would like me to explain how to do it, I can in the comments.
