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oksian1 [2.3K]
3 years ago
13

What is the sum of the n terms of the series 4 + 12 + 36 + 108 + . . . ?

Mathematics
1 answer:
arlik [135]3 years ago
8 0
Sum of n terms of a geometric series is
Sn = a1 (r^n-1)/(r-1)
a1 = 1st term = 4
r = common ratio = 12/4 = 3
so, the sum is
Sn = 4 (3^n-1)/(3-1) = 2(3^n-1)
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Write the equation of the line that passes through the point ( -6 , 2 ) and is parallel to the line y = 1/2x + 4.
SashulF [63]
Parallel lines need the same slope, and for y = 1/2x + 4, it is 1/2.

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3 years ago
Find the missing side?
weeeeeb [17]

Answer:

Hey there!

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2 years ago
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nasty-shy [4]

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2 years ago
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ollegr [7]

Answer:

JM = 20

Step-by-step explanation:

Find the value of JM

Using similar triangles;

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<em>Hence the length of JM is 20</em>

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