a G.P. 729, 243, 81 ... find t7.
20. Find the sum of 13 + 23 + 33 +43 +
+ 703
21 Find the zeros of the 1
Answers
Step-by-step explanation:
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A: There are about 115,000 species of moths and butterflies.
Q: Why are butterflies so colorful?
A: Color is important in many ways. It functions as camouflage, to absorb heat, aids in finding a mate, serves as warning, and in many more ways.
Q: Which butterfly is bigger, the male or female?
A: Though it depends on the species, the female butterfly is often larger.
Q: What do butterflies eat?
A: The majority of butterflies feed on flower nectar and pollen.
Q: What are some of the differences between moths and butterflies?
A: Moths fly mostly at night, have thick bodies, antennae without enlargements on the end, and they spin a cocoon.
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Answer:
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Step-by-step explanation:
It is given that the first term of G.P is a1=729 and the second term is a2 =243, therefore,
r= a2/a1= 243/729= 1/3
We know that the formula for the nth term of an G.P is Tn=ar^n−1 , where a is the first term, r is the common ratio.
It is given that the first term is a=729 and the common ratio is r= 1/3
, thus,
T7=729×( 1/3)^7−1 =729×1/3^6