2 years ago

Find the first term of the following geometric sequence: , 15, 45, 135, 405,

Mathematics

1 answer:

mash [69]2 years ago

6 0

The answer is 5 If you dont like this you first see what you can multiple to get to 15 first.

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a_sh-v [17]

Answer:

x = 8

Step-by-step explanation:

7x + 2(6x + 9) = 170

2(6x + 9) = 12x + 18

7x + 12x + 18 = 170

19x = 152

152/19 = 8

x = 8

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3 years ago

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irakobra [83]

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Step-by-step explanation:

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rewona [7]

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Step-by-step explanation:

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