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satela [25.4K]
3 years ago
10

Find the first four terms of this geometric sequence. A1=40 and r=0.5

Mathematics
1 answer:
Yuliya22 [10]3 years ago
5 0
In a geometric sequence, u find the next term by multiplying by the common ratio (r), which in this problem = 0.5

A1....means first term

so the first term is 40
second term would be 40 * 0.5 = 20
third term is 20 * 0.5 = 10
fourth term is 10 * 0.5 = 5

so ur first 4 terms are : 40, 20, 10, 5
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