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3 years ago

Any help please thanks

Mathematics

2 answers:

vekshin13 years ago

6 0

Answer:

n=54

Step-by-step explanation:

Since this is a proportion problem, you have cross mulitply.

7n=9x42

7n=378

n=54

Dovator [93]3 years ago

6 0

Answer:

cross multiply

9×42=378

7×n=7n

n=378/7

n=54

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What is the sum of the first 15 terms of the geometric series: 1/6 1/2 3/2 9/2 ... 7174453 4782968.6667 797161.4444 1195742.1667

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