Which of the following is a rational number? (4 points)
2 answers:
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Answer:
nth term =
Step-by-step explanation:
Let us assume that the given sequence is a G.P.
Now, if the first term of the G.P. is a and the common ratio is r, then
Third term = .......... (1) and
20th term = ........... (2)
Now, dividing equation (2) with equation (1) we get
⇒
⇒ r = 1.2.
Hence, from equation (1) we get
a(1.2)² = 11
⇒ a = 7.639 (Approx.)
Therefore, the general term of the sequence i.e. nth term = (Answer)
Let w and l be the length and height of the rectangle.
We know that:
Substitute the first equation in the second:
Use the first equation to compute the length:
So, length = 7 cm; width = 6 cm