Answer:
The answer is C i.e an=4n-7
Answer:
= 
+ 2.5
Step-by-step explanation:
This is an arithmetic sequence with common difference d = 2.5
The recursive formula allows any term in the sequence to be found by adding d to the previous term, thus
= + 2.5 ← recursive formula with a₁ = 3
E^2x=(42-12)/3, that is easy
Then, the magic!
Ln(e^2x)=Ln[(42-12)/3]
2x.Ln(e)=Ln[(42-12)/3]. "Ln(e)=1"
X={Ln[(42-12)/3]}/2
Good luck!
M.
The ratio of the areas is the ratio of the squares of the sides ( which is 10:15 or 2:3) so the answer is
2^2 : 3^2 = 4:9.
The ratio of the perimeters = ratio of corresponding side = 2:3.
14.4/4 is 3.6. Therefore the answer is 3.6.
