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1 year ago

Simplify the expression. n+3(n−1)

Mathematics

2 answers:

dlinn [17]1 year ago

8 0

4n-3 I’m sure I’m right.

puteri [66]1 year ago

3 0

Answer:

4n - 3

Step-by-step explanation:

$n+3(n-1)\\n+3n-3\\4n-3$

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Answer:

y-8=5/6(x-12)

Step-by-step explanation:

y-y1=m(x-x1)

y-8=5/6(x-12)

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2 years ago

Solve this x²+8/10 -x = 10/2

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$x^2+\frac{8}{10}-x=\frac{10}{2}\\
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x^2-x-\frac{42}{10}=0\\
x^2-x+\frac{1}{4}-\frac{1}{4}-\frac{42}{10}=0\\
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x-\frac{1}{2}=\sqrt{\frac{89}{20}} \vee x-\frac{1}{2}=-\sqrt{\frac{89}{20}}\\
x=\frac{1}{2}+\frac{\sqrt{89}}{\sqrt{20}} \vee x=\frac{1}{2}-\frac{\sqrt{89}}{\sqrt{20}}\\


$
$x=\frac{1}{2}+\frac{\sqrt{89}}{2\sqrt{5}} \vee x=\frac{1}{2}-\frac{\sqrt{89}}{2\sqrt5}}\\
x=\frac{1}{2}+\frac{\sqrt{445}}{10} \vee x=\frac{1}{2}-\frac{\sqrt{445}}{10}}\\
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