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Llana [10]
3 years ago
15

4:×=28:42 ( pls send me photo of this ans)​

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
3 0

Answer:

4:x = 28:42

x × 28 = 4 × 42

28x = 168

x = 168/28

x = 6

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\begin{gathered} t=0=1960,y=14030 \\ t=1=1961,y=14060 \\ so\text{ b = 14000} \\ so\text{ k = 30} \end{gathered}

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\begin{gathered} y=15000 \\ y=30t+14000 \\ 15000=30t+14000 \\ 15000-14000=30t \\ 1000=30t \\ t=\frac{1000}{30} \\ t\approx33 \\ t=1960+33 \\ t=1993 \end{gathered}

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