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Mathematics
Liana Shannon
20 January, 14:07
Solve 3^x - 2 = 3^7
A. 2
B. 5
C. 7
D. 9
+1
Answers (
1
)
Makai Reynolds
20 January, 16:22
0
C) 7
Step-by-step explanation:
3^x-2=2187
Step 1: Add 2 to both sides.
3^x-2+2=2187+2
3^x=2189
Step 2: Solve Exponent.
3^x=2189
log (3x) = log (2189) <
x * (log (3)) = log (2189)
x = log (2189) / log (3)
x=7.000832
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