Which number is irrational? A. 3.14 B. 0.181818... C. V10 D. V27/3

Mathematics

1 answer:

kolezko [41]3 years ago

5 0

Answer:

√ 10

Step-by-step explanation:

An Irrational Number is one which cannot be put into rational form (i.e. a fraction)

Pretty much, any decimal that is not in any particular order is irrational. Of this list, √ 10 is the only one that generates a non-repeating decimal, so that is your irrational number.

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What is the solution to the following system of equations?

Mrac [35]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}x-3y=6&\text{multiply both sides by (-2)}\\2x+2y=4\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-2x+6y=-12\\2x+2y=4\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad8y=-8\qquad\text{divide both sides by 8}\\.\qquad\qquad y=-1\\\\\text{Put the value of y to the first equation:}\\\\x-3(-1)=6\\x+3=6\qquad\text{subtract 3 from both sides}\\x=3$