Answer:
the number of dreams that include people you know out of 28 is 21
Step-by-step explanation:
Here is the complete question:
It is believed that about
of our dreams involve people that we know.
So the expression to describe the number of dreams that feature people you know if you have "d" dreams is:

Now using the above expression we can predict number of dreams that include people you know out of 28. Here 28 represents number of dreams i.e. "d". So expression becomes:

Now simplify the above expression:
=
=
= 
Hence the number of dreams that include people you know out of 28 is 21
Answer:
96.76%
Step-by-step explanation:
185 - 6 = 179
Holly was 179 days in attendance.
179/185 = 0.967567568
Holly was about 96.76% present.
Answer:
P=30
W=12
T=16
Step-by-step explanation:
You have 135 blueberries, you share them equally among 9 friends. How many blueberries does each person get?
Answer:
Mean age = 1271.27
Step-by-step explanation:
No of children = 77
The age at which children first began to combine words = 16.51 months
Mean age = No of children × age at which children first began to combine words
= 77 × 16.51
= 1271.27
Mean age = 1271.27