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Andru [333]
3 years ago
13

Calculate the perimeter of a quadrilateral 3 cm 2 cm 2 cm 5 cm

Mathematics
2 answers:
dolphi86 [110]3 years ago
6 0
The answer is 12cm the only thing you have to do is add all of the measure
zhenek [66]3 years ago
3 0
The perimeter would be 12 cm. 3+2+2+5=12 cm
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Determine all real numbers a$ such that the inequality $ |x^2 2ax 3a|\le2$ has exactly one solution in x$.
vovikov84 [41]

Answer:

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Step-by-step explanation:

For the sake of clarity, assuming you meant:

|x^{2}+2x+3|\le2

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If |a|

2) Solving for x

I) x^{2}+2x+3\geqslant -2\Rightarrow x^{2}+2x+5\geqslant 0 \Rightarrow x\geqslant \frac{-2\pm \sqrt{2^{2}-4*1*5}}{2} x'\geqslant \frac{-2+4i }{2} \:and\:x''\geqslant \frac{-2-4i }{2}

Not defined in Real Set of Numbers

Evaluating x^{2}+2x+3\leqslant 2:

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3) So, since for the first case the Discriminant Δ <0, then the solutions presented for x^{2}+2x+3\geqslant -2\: \in \mathbb{C}. The only solution in the Real Set for the inequality |x^{2}+2x+3|\le2 is S=\{-1\}, i.e. x=-1.

8 0
3 years ago
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