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Zolol [24]
3 years ago
7

Please help with this? (And explain if you can.)

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0
3X+2=X+16

4X=14

X=3.5

So your final answer would be 3.5

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Simplify completely..........​
vitfil [10]

Answer:

\frac{x}{x-1}

Step-by-step explanation:

\frac{3x^2 - 1}{x^2 - 1} - \frac{2x + 1}{x + 1}                                          [ \ x^ 2- 1 = (x-1)(x + 1) \ ]

= \frac{3x^2 - 1}{(x-1)(x  + 1 )} - \frac{2x + 1}{x + 1}\\\\=\frac{(3x^2 - 1)-(2x + 1)(x-1)}{(x + 1)(x-1)}                        [\ Taking \ LCM \  ]

= \frac{(3x^2 - 1)- (2x^2 - 2x + x - 1)}{(x+1)(x-1)}\\\\=\frac{3x^2 - 1 - 2x^2 + x + 1 }{(x+1)(x-1)}\\\\=\frac{x^2 +x}{(x+1)(x-1)}\\\\=\frac{x(x+1)}{(x+1)(x-1)}\\\\=\frac{x}{x-1}

<em><u>Finding LCM :</u></em>

Example :

                 \frac{1}{6} + \frac{1}{3}

6 = 2  x   3

3 = 1   x   3

                \frac{1}{2 \times 3} + \frac{1}{ 3} = \frac{1}{2 \times 3} + \frac{1 \times 2}{ 3 \times 2}  

[ To make the denominators same : the second fraction is multiplied and divided by 2 ]

Similarly :

 (x^2 - 1 ) = (x -1)(x+1)\\\\(x + 1)  = 1 \times (x + 1)

Same rule we applied : multiplied the numerator and denominator of the second term with ( x - 1 )

Therefore the second term becomes ,

                                       \frac{2x + 1}{x + 1} = \frac{(2x + 1)(x - 1)}{(x + 1)( x - 1)}

7 0
3 years ago
Find the Total Surface Area of the following Triangular Prism’s NET……
Zielflug [23.3K]

Answer:

170 cm^2.

Step-by-step explanation:

This consists of 3 rectangles of same area and 2 triangles of the same area.

= 3 * 10 * 5 + 2 * 1/2 * 5 * 4

= 150 + 20

= 170 cm^2.

8 0
3 years ago
The formula for the area, A, of a triangle is A=1/2bh, where b is the base and h is the height of the triangle. Find the area of
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Answer:

x = 8

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Step-by-step explanation:

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Area = 1/2 ( 6*√12+ √48)

Area = 1/2 (6*√12 + 4√3)                            Multiply by 1/2

Area  =  3√12 + 2√3

Area =  3*2√3 + 2√3

Area = 6√3 + 2√3

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5 0
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.5x + 2y<br> coefficients
alukav5142 [94]

Answer:

Is this ur final  exam

Step-by-step explanation:

7 0
3 years ago
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