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If 3x-1 = 9 and 4y+2 = 64, What is the Value of X Y ? - Mathematics

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प्रश्न

If 3x-1 = 9 and 4y+2 = 64, what is the value  of \[\frac{x}{y}\] ?

थोडक्यात उत्तर

उत्तर

We have to find the value of `x/y` for `3^(x-1) = 9.4^(y+2) = 64` 

So,

`3^(x-4) = 3 ^2`

By equating the exponent we get

x-1=2

x=2+1

x=3

Let’s take `4^(y+2) = 64`

`4^(y+2) = 4^3`

By equating the exponent we get

y+2 = 3

y=3-2

y=1

By substituting x=3,y=1 in `x/y` we get  `3/1`

Hence the value of `x/y` is  3.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Exponents of Real Numbers - Exercise 2.3 [पृष्ठ २८]

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आरडी शर्मा Mathematics [English] Class 9
पाठ 2 Exponents of Real Numbers
Exercise 2.3 | Q 6 | पृष्ठ २८

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