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KengaRu [80]
2 years ago
15

2. Select all ratios that are equivalent to 3:18. 21:126 6:36 1:6 1:18 15 21

Mathematics
1 answer:
mafiozo [28]2 years ago
5 0

Answer:

21:126

6:36

1:6

Step-by-step explanation:

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Answer:

1.\:2^x=64, x=\boxed{6},\\2.\:x=\left(\frac{2}{3}\right)^3,x=\boxed{\frac{8}{125}}\\3.\:3\cdot (3^4)=3^x, x=\boxed{5}\\4.\:\frac{16}{25}=x^2,x=\boxed{\frac{4}{5}},

Step-by-step explanation:

1.\\\\2^x=64,\\\log 2^x=\log64,\\x\log 2=\log 64,\\x=\frac{\log 64}{\log 2}=\boxed{6}

2.\\x=\left(\frac{2}{5}\right)^3=\frac{2^3}{5^3}=\boxed{\frac{8}{125}}

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