Answer: 18
Step-by-step explanation:
To average 20 in 4 games, she would need 80 points in total. In her 3 games, she gets 62 points.
80 - 62 = 18
Answer:
9
Step-by-step explanation:
k=-9
-9×-9
81 square rooted
9
Answer:
u=2 root 2
Step-by-step explanation:
All 45 45 90 degree triangles follow the same pattern
Answer:

Step-by-step explanation:
Since the sequence is geometric (it multiplies the previous number each time). The nth term sequence would be 
Because the sequence multiplies by 3 each time, The base number in that equation would be
.
So
of the equation would be:
.
Compare the 2 equations:
4, 12, 36
3, 9 ,27
The difference between the 2 equations is: 1, 3, 9 which itself is a geometric sequence so the nth term of this new equation is:
.
Combine these 2 equations together and you get:
.
-3 and 3, both three away from 0