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Sonbull [250]
3 years ago
5

Please help me hurry!! 8

Mathematics
2 answers:
tiny-mole [99]3 years ago
7 0

Answer:

r = 7

Step-by-step explanation:

a =5\\\\a_{3}=245\\\\a_{n}=ar^{n-1}\\\\a_{3}= 5*r^{2} \\\\5*r^{2} = 245\\\\r^{2}=\frac{245}{5}\\\\r^{2}=49 = 7^{2}\\\\r = 7

hichkok12 [17]3 years ago
5 0
R=7

Explanation I just calculate it
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