Algebra

Algebra Level 1

If 38 + n = 46 38 + \sqrt{n} = 46 , find 3 n 4 3n-4 .

263 20 236 188 7

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3 solutions

Nabiella Zahra
Jul 23, 2016

38 + n = 46 38+\sqrt{n}=46

Subtracting 38 38 from both sides of the equation, we get n = 8 \sqrt{n}=8

Squaring both sides we get, n = 64 n=64 . Finally, the desired answer is 3 ( 64 ) 4 = 3(64)-4= 188 \boxed{188}

Una ang imong buhaton i equate sa ang 38 + n = 46 38+ \sqrt{n} = 46 nga mao ang pagpangita sa value sa n n

mao ni:

38 + n = 46 n = 46 38 ( n ) 2 = 8 2 Imo sa i - square both sides para makuha ang value sa n n = 8 ( n ) 2 = 8 2 n = 64 \begin{aligned} 38+\sqrt{n}=46 &\Rightarrow \sqrt{n} = 46 - 38 \\& \Rightarrow (\sqrt{n})^2 = 8^2 \quad\quad{\text{Imo sa i - square both sides para makuha ang value sa }n \space \sqrt{n} = 8 \Rightarrow (\sqrt{n})^2 = 8^2} \\&\Rightarrow n = 64 \end{aligned}

Dayon ang 3 n 4 3n - 4 ang variable nga n n imo na ilisan ug 64 64 kay tungod nakuha ang value sa n n mao ang 64 64

Ang mahitabo.

3 n 4 = 3 ( 64 ) 4 Himua ang n = 64 = 188 \begin{aligned} 3n - 4 &= 3(64) - 4 \quad\quad{\text{Himua ang }n = 64}\\&= 188 \space \square \end{aligned}


I will translate this in English soon.

ADIOS!!! \text{ADIOS!!!}

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