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Ratio is 3

and 7th term is 162 i think so

1 Answer

The arithmetic mean formula is also sometimes just called the mean. One can arrive at the solution to this formula by adding together all the number in a set and dividing them by the number of items in the set. Essentially one can also look at the mean of a set of numbers as the average of that...Read More

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Answer must be 60

First term is 12, Last term is 248

248 = 12 + (n-1)4

236 = (n-1)4

59 = n-1

n = 60

1 Answer

A= 121
d= -4
let the first negative term be an,
s0 an...Read More

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Solution

time= distance divide by speed

time=60 divide by 7

time=8whole4out of seven

1 Answer

I would like to see the explicit formula written for this question

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None.dont understand it

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An=A1 + (n-1)d.
A4= A1 + (4-1)d
93= A1 + (3) -7
93= A1 - 21
93 + 21=A1
114 = A1...Read More

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