2 years ago

Evaluate f(x) = 2x at x = 5. A) 32 B) 10 C) 64 D) 25

Mathematics

1 answer:

maks197457 [2]2 years ago

7 0

Answer:

A is the answer 32

Step-by-step explanation:

use a digital calculator or a scientific

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2 years ago

Solve this quadratic equation using the quadratic formula.<br> 5 - 10x - 3x2 = 0

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Step-by-step explanation:

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2 years ago

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For what values of $x$ is $$\frac{x^2 + x + 3}{2x^2 + x - 6} \ge 0?$$ note: be thorough and explain why all points in your answe

Rus_ich [418]

To solve the inequality $\frac{x^2+x+3}{2x^2+x-6}\ge \:0$

$\mathrm{Factor\:the\:left\:hand\:side\:}\frac{x^2+x+3}{2x^2+x-6}:$

The numerator $x^2+x+3$ is not factorizable.

so factor the denominator $2x^2+x-6$ :

$2x^2+x-6=\left(2x^2-3x\right)+\left(4x-6\right)=x\left(2x-3\right)+2\left(2x-3\right)\\ \mathrm{Factor\:out\:}x\mathrm{\:from\:}2x^2-3x\mathrm{:\quad }x\left(2x-3\right)\\ \mathrm{Factor\:out\:}2\mathrm{\:from\:}4x-6\mathrm{:\quad }2\left(2x-3\right)\\$