Simplify (3x + 5) + (2x - 9) - (4x + 3).

Mathematics

1 answer:

ahrayia [7]3 years ago

7 0

The answer is x-7
(3x+2x-4x)+(5+-9-3)
(5x-4x)+(-4-3)
(1x)+(-7)
x-7

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$\dfrac{1}{2} \times 10 \times 10 = \dfrac{1}{2} \times r \times 10 + \dfrac{1}{2} \times r \times 10 + \dfrac{1}{2} \times r \times 10\sqrt2\\\Rightarrow r = \dfrac {10}{2+\sqrt2} \\\Rightarrow r = \dfrac{5\sqrt2}{\sqrt2+1}\\\text{Multiplying and divinding by }(\sqrt2 +1)\\\Rightarrow r = 10-5\sqrt2$