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Pie
3 years ago
11

-3x+3y=4 -x + y = 3 solve using elimination

Mathematics
1 answer:
viktelen [127]3 years ago
4 0

Answer:

No solution

Step-by-step explanation:

-x + y = 3

-3x + 3y = 4

Multiply top by -3

3x -3y =-9

-3x +3y = 4

0 = -5

No Solution

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Three functions are given below: f(x), g(x), and h(x). Explain how to find the axis of symmetry for each function, and rank the
SpyIntel [72]

for f(x) = -2(x-4)2+2 - set equation to y = -2(x-4)2+2, solve x-4=0, x = 4

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3 years ago
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MariettaO [177]

To find the area of a rectangle, we multiply the Base by the Height.                        In this case the:   Base = AB   and     Height = BC  

So to get the area, we multiply AB by BC.                                               (and we know that <em>BC = 5x+5/x+3</em> <em>and BC = [3x+9/2x-4)</em>  

So we would do:

\frac{5x+5}{x+3} x \frac{3x+9}{2x-4}                              

Note: When multiplying fractions together, we multiply the numerator by the numerator, and the denominator by the denominator.                                        

For example \frac{2}{8} x \frac{3}{4} = \frac{6}{32}    


Answer: \frac{5x+5}{x+3} x \frac{3x+9}{2x-4} = \frac{(5x+5)(3x+9)}{(x+3)(2x-4)}

\frac{(5x+5)(3x+9)}{(x+3)(2x-4)} = \frac{5(x+1)*3(x+3)}{(x+3)*2(x-2)} [<em>Note: </em><em>we are able to factorise some brackets to make the sum easier. For example we can factor out the 5 in (5x+5) to get: 5(x+1)   ]</em>

Now lets simplify by multiplying the 5 and 3 together in the numerator:

\frac{5(x+1)*3(x+3)}{(x+3)*2(x-2)} = \frac{15 (x+1)(x+3)}{(x+3)*2(x-2)}

If you notice, there is a (x+3) in numerator and the denominator. This means that we can cancel out the (x+3), to get the most simplified expression for the area:

\frac{15 (x+1)(x+3)}{(x+3)*2(x-2)} = \frac{15(x+1)}{2(x-2)}

Final Simplified Answer: \frac{15(x+1)}{2(x-2)} which is the last option

3 0
2 years ago
Read 2 more answers
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