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lozanna [386]
3 years ago
13

Log 7 (x2 + 11) = log 7 15 answers; a)4 b)2 c)3.87 d)12

Mathematics
2 answers:
Finger [1]3 years ago
4 0

Answer:

2

Step-by-step explanation:

i thought 7 is a base so just solve equation

2x+11=15

x=2

vesna_86 [32]3 years ago
4 0

Answer:

2

Step-by-step explanation:

log 7 (x^2 + 11) = log 7 15

x^2 + 11 = 15

-11    -11

x^2 = 4

(\sqrt{x}^{2}) = (\sqrt{4})

x = 2

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