1 answer:
Answer:
19. 4^9=262144
20. 349524
Step-by-step explanation:
Each week, the number of new cases is equal to 4^n, for the 9th week, this is equal to 4^9=262144.
The number of total cases each week is a geometric series. The sum of the first n terms of a geometric series with common ratio r and first term a is
a(1-r^n)/(1-r). Using this, 4(1-4^9)/(1-4)=349524.
You might be interested in
Answer:
160 is a whole angle so 37+72=109 160-109=51
51 is your answer
Step-by-step explanation:
Answer:
12, and -2
Step-by-step explanation:
12 + (-2) = 10
12 * (-2) = -24
Answer:
3/4
Step-by-step explanation:
Answer:
y = 18
Step-by-step explanation:
As a formula, you're saying 4*(n-7)=32
This solves to n-7 = 8, so n=15