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FromTheMoon [43]
3 years ago
9

HELPPP ASAP What is the value of x in this equation 1/2x - 9 = 36

Mathematics
2 answers:
sleet_krkn [62]3 years ago
8 0

Answer:

Step-by-step explanation:

45

Ber [7]3 years ago
3 0
1/2x=36+9
1/2x=45
1=45*2x
1=90x
X=1/90
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It's a geometric sequence.

4,-12,36,... \\ \\
a_1=4 \\
r=\frac{a_2}{a_1}=\frac{-12}{4}=-3 \\ \\
a_n=a_1 \times r^{n-1} \\
a_n=4 \times (-3)^{n-1} \\
a_n=4 \times (-3)^{-1} \times (-3)^n \\
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It's the sum for term 4 through term 15.

 \boxed{ \sum\limits_{n=4}^{15} (\frac{4}{3}(-3)^n)}
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Step-by-step explanation:

Hi,

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