3 years ago

What is the answer to 12x-83=6x+121

Mathematics

1 answer:

vitfil [10]3 years ago

5 0

Answer:

x=34

solve for x

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Can someone help me with this?

Anna35 [415]

Answer:

Let 'a' be the first term, 'r' be the common ratio and 'n' be the number of terms

Series = 2+6+18.......= 2+2•3¹+ 2•3².......= 728

Now,

$Sum = \frac{a( {r}^{n} - 1) }{(r - 1)} \\$

So,

$\frac{a( {r}^{n} - 1)}{(r - 1)} = 728 \\ \frac{2( {3}^{n} - 1) }{(3 - 1)} = 728 \\ \frac{2( {3}^{n} - 1) }{2} = 728 \\ {3}^{n} - 1 = 728 \\ {3}^{n}=728+1\\ {3}^{n} = 729 \\ {3}^{n} = {3}^{6} \\ \boxed{ n = 6}$

Therefore, number of terms is 6

6 is the right answer.

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3 years ago

64 plus what equals 100

jok3333 [9.3K]

The answer is 36 because 64+36=100

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11z > -33 help please

stich3 [128]

11z > -33

11z / 11 > 33 / 11

z > 3

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3 years ago

What is the distance between (-3, 2) and (2, -1)

MariettaO [177]

Answer:

(5,-3)

Step-by-step explanation:

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Urgent: What is an equation of the line perpendicular to y=-x-2 and through (-2,4)?

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Point slope form- y-4=(x+2)
Slope intercept- y=x+6

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