Answer:
36cm
Step-by-step explanation:
4.5+4.5 = 9
9*4 = 36cm
Answer:
The explicit formula for a given geometric sequence is of the form

Step-by-step explanation:
Given sequence is 
Let
To find the common ratio r:



Therefore r=-3



Therefore r=-3
Therefore common ratio is -3
Therefore given sequence is geometric sequence.
The explicit formula for a geometric sequence is
, where common ratio is r.
From given sequence we are having r=-3
Therefore the explicit formula for a given geometric sequence is of the form 


Answer:
yes
Step-by-step explanation:
To find the answer, you need to round to the nearest tens. Round 142 to 140 and 1 68 to 160. You know that 1+1=2, and 6+4=10, so 200+100=300 pages read.