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kykrilka [37]
3 years ago
8

3 = log8 + 3logx. help me please

Mathematics
1 answer:
jeka943 years ago
6 0
The\ domain:\\D:x \ \textgreater \  0\\\\\log8+3\log x=3\\\\use:\\a\log b=\log b^a\\ \log a+\log b=\log(a\cdot b)\\\log_ab=c\iff a^c=b\\\\\log8+\log x^3=\log10^3\\\\\log8x^3=\log10^3\iff8x^3=1000\ \ \ \ |divide\ both\ sides\ by\ 8\\\\x^3=125\to x=\sqrt[3]{125}\to\boxed{x=5}\in D
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3 years ago
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if 5000000 invested at 4% interest compounded continuously how much will the investment be worth in 30 years
umka21 [38]
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A=furutre amount
P=present amount
e=natural base
r=rate in decimal
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6 0
2 years ago
The sum of two numbers is 85. twice one number plus four times the other is 218. find the numbers
Nina [5.8K]
X + y = 85
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6 0
3 years ago
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