Mathematics: Need help with these two questions please

Need help with these two questions please

Ответ:

poppy1173

17.02.2022

$3)\log_{49}7=\log_{7^2}7=\dfrac{1}{2} \log_7 7=\dfrac{1}{2} \times1=\dfrac{1}{2} \\\\4)\log40=\log(10\times4)=\log_{10}10+\log_{10}2^2=1+2\log_{10}2\\\log_{10}22\log_{10}2\log40\approx1.602$

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Ответ:

thompsonjeremiah837

02.11.2020

Mathematics

50kg

Step-by-step explanation:

K = Keith B = Beth H = Henry

K = 20 + B

H = 2B - 30

K = H

20 + B = 2B - 30

B = 50kg

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Need help with these two questions please

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