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melomori [17]
3 years ago
7

Find the missing term in the geometric sequence : 8 , 20 , 50, 125 , ____

Mathematics
1 answer:
Solnce55 [7]3 years ago
3 0

Answer:

312.50

Step-by-step explanation:

8 , 20 , 50, 125 , 312.50

First term, a = 8

Second term, ar = 20

Find common ratio, r

Substitute a = 8 into second equation

ar = 20

8r = 20

r = 20/8

r = 2.5

Find the fifth term

ar⁴

= 8 * 2.5⁴

= 8 * 39.0625

= 312.50

Fifth term, ar⁴ = 312.50

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