What is the lateral area of the drawing?
1 answer:
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Answer:
Step-by-step explanation:
Given:
Adding the above two equations, we get
Therefore, an equivalent system of equations using the sum of the system and the first equation is :
24 - 16 = 8
36 - 24 = 12
54 - 36 = 18
So, obviously, this isn't an arithmetic sequence.
24/16 = 3/2
36/24 = 3/2
54/36 = 3/2
Aha! This is a geometric sequence.
Now, let's find the 7th term in this sequence!
We're trying to solve for a_7.
We know that a_1 is 16
We know that n = 7
We know that r = 3/2 or 1.5
Plug it in!
The seventh term is 182.25
36 - 24 = 12
54 - 36 = 18
So, obviously, this isn't an arithmetic sequence.
24/16 = 3/2
36/24 = 3/2
54/36 = 3/2
Aha! This is a geometric sequence.
Now, let's find the 7th term in this sequence!
We're trying to solve for a_7.
We know that a_1 is 16
We know that n = 7
We know that r = 3/2 or 1.5
Plug it in!
The seventh term is 182.25
Answer:
let the number be x
therefore, the number is 28.
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