aaryadrover06 aaryadrover06

12-09-2022
Mathematics

contestada

For a geometric progression,
u3 = 4.5 and u7 = 22.78125. Find the value of the common ratio and the first term.

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jaisurajk jaisurajk

12-09-2022

Answer: Ratio: 2:3

2 ==> 1st term

Step-by-step explanation:

22.78125/4.5=5.0625

5.0625^(1/(7-3))=

5.0625^(1/4)=1.5 ==> Ratio: 1:1.5 ==> 2:3

4.5 / 1.5^(3-1)=

4.5 / 1.5^2=

4.5 / 2.25 = 2 ==> 1st term

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