Mathematics: Justin has 1200 dollars in his bank account and saves 30 a week emmanuel has 3600 but spends 25 each week. when will they have the same amount of money?

Justin has 1200 dollars in his bank account and

Ответ:

mouna45

01.01.2022

1200 + 35w = 3600 - 25w
35w + 25w = 3600 - 1200
60w = 2400
w = 2400/60
w = 40 <== 40 weeks

Justin : 1200 + 35(40) = 1200 + 1400 = 2600
Emmanuel : 3600 - 25(40) = 3600 - 1000 = 2600
so at 40 weeks, they both have $ 2600

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Ответ:

sarahlearn3

07.05.2023

Mathematics

$D:x-2\ \textgreater \ 0 \wedge 2x-3\ \textgreater \ 0 \wedge x\ \textgreater \ 0\\
D:x\ \textgreater \ 2 \wedge x\ \textgreater \ \dfrac{3}{2}\wedge x\ \textgreater \ 0\\
D:x\ \textgreater \ 2\\\\
\ln (x-2) +\ln (2x-3)=2\ln x \\
\ln (x-2)(2x-3)=\ln x^2\\
(x-2)(2x-3)=x^2\\
2x^2-3x-4x+6=x^2\\
x^2-7x+6=0\\
x^2-x-6x+6=0\\
x(x-1)-6(x-1)=0\\
(x-6)(x-1)=0\\
x=6 \vee x=1\\
1\not \in D\\
\boxed{x=6}$

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Justin has 1200 dollars in his bank account and saves 30 a week emmanuel has 3600 but spends 25 each week. when will they have the same amount of money?

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