3 years ago

Using the distance formulas, find the equation of a parabola with a focus of (3, 4) and a directrix of y = −2.

Mathematics

1 answer:

Charra [1.4K]3 years ago

4 0

Try using a site like Khan Academy to get a solution

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3 years ago

The number of eggs in the refrigerator e decreased by 9 equals 17.

alexandr402 [8]

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3 years ago

If c(x)= 5/x-2 and d(x) = x + 3, what is the domain of (cd)(x)?

Nataly [62]

$(fg)(x)=f(x)\cdot g(x)\\\\\text{We have}\ c(x)=\dfrac{5}{x-2}\ \text{and}\ d(x)=x+3.\ \text{Substitute}\\\\(cd)(x)=\dfrac{5}{x-2}\cdot(x+3)=\dfrac{5(x+3)}{x-2}\\\\\text{Domain:}\\\\\text{The denominator must be different than zero. Therefore}\\\\x-2\neq0\to x\neq2\\\\Answer:\ \text{Domain is the set of all real numbers except 2}\to D=\mathbb{R}-\{2\}$