Answer:
l = 6
+ 2a - 1
Step-by-step explanation:
the area (A) of a rectangle is calculated as
A = lw ( l is the length and w the width )
given A = 18
+ 6a² - 3a and w = 3a , then
3aw = 18 + 6a² - 3a ( divide each term by 3a )
w = 
+ 
- 
= 6 + 2a - 1
Answer:
In total there are 25 students in the class.
Answer=28 players
If there are 4 players at every 1 table then...
1 table would have 4 players
4=4
2 tables would have 8 players
4+4=8
3 tables would have 12 players
4+4+4=12
4 tables would have 16 players
4+4+4+4=16
5 tables would have 20 players
4+4+4+4+4=20
6 tables would have 24 players
4+4+4+4+4+4=24
7 tables would have 28 players
4+4+4+4+4+4+4=28
____________________________
You can also solver this problem by multiplying the number of tables, 7, by the number of player per table, 4.
7*4=28players
1/6*1/6*1/6*1/6 = 1/1296 = 0.078% probability of ANY 4-letter sequence (including qqqq)
1000/1296 is less than 1.
Expected number of times qqqq (or any given 4-letter sequence) will appear in 1000 letters is 0.
