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3 years ago

Identify the number which is IRRAITONAL

1 answer:

6 0

Irrational numbers are numbers that cannot be expressed as the ratio of two whole numbers. This is opposed to rational numbers, like 2, 7, one-fifth and -13/9, which can be, and are, expressed as the ratio of two whole numbers. When expressed as a decimal, irrational numbers go on forever after the decimal point and never repeat.

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Only the a) part please!!!!

choli [55]

$(i)\\\\2A = \begin{pmatrix}3x \times 2 & 1 \times 2 & 5 \times 2\\0\times 2 & 2x \times 2 & -3 \times 2\end{pmatrix} = \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix}\\\\\\(ii)\\\\2A + B = C\\\\\implies \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix} + \begin{pmatrix}y & 0 & -4\\1 & -3y & 2\end{pmatrix} = \begin{pmatrix}31& 2 & 6\\1 & 17& -4\end{pmatrix}$

$\implies \begin{pmatrix}6x+y & 2+0 & 10-4\\0+1 & 4x-3y & -6+2\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\\\implies \begin{pmatrix}6x+y & 2 & 6\\1 & 4x-3y & -4\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\text{System of equations},\\\\6x +y =31,~~ 4x -3y = 17\\\\\\(iii)\\\\6x +y-31 =0 \\\\4x-3y -17=0\\\\\text{Solving by cross multiplication method}\\\\\\\dfrac x{1(-17) - (-31)(-3)} = \dfrac y{4(-31) - 6(-17)} = \dfrac 1{6(-3) - 4(1)}$

$\implies \dfrac{x}{-17 -93} = \dfrac{y}{-124 +102} = \dfrac 1{-18-4}\\\\\\\implies -\dfrac{x}{110} = -\dfrac{y}{22} = -\dfrac 1{22}\\\\ \implies \dfrac{x}{110} = \dfrac{y}{22} = \dfrac 1{22}\\\ \\\text{Hence,}\\\\\\x=\dfrac{110}{22}=5,~~~~ y= \dfrac{22}{22} =1$

7 0

2 years ago

Read 2 more answers

Find the perimeter of a square with sides of 6x + 5.

omeli [17]

Answer:

24x+20

Step-by-step explanation:

perimeter is just the sum of all the sides

6x+5 +6x+5 +6x+5+6x+5= 24x+20

4 0

3 years ago

PLEASE I REALLY NEED HELP

Luda [366]

Answer:

<u>GUEN AND KEITH </u>

Step-by-step explanation:

both the equations are the same so you take those and do a simultaneous equation if you were to find the answer

hope this helps :)

4 0

3 years ago

Please help..... , click on it to get a better view :)

Vlad1618 [11]

Answer:

Step-by-step explanation:

6 0

3 years ago

I need help with this 2

Inessa [10]

Answer:

Ned lost 16 points total.

Step-by-step explanation:

If Ned got 6 questions wrong, and each one cost him four points, that would be 24 points total. 6x4=24. But since Ned got 8 additional points on a bonus question. It equals out to a total los of 18 points.

-24 + 8= -16

4 0

3 years ago