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IRINA_888 [86]
2 years ago
13

I don’t understand how to solve this

Mathematics
1 answer:
Lelechka [254]2 years ago
6 0

\huge\underline\mathtt\colorbox{cyan}{1. f(-1)}

For this to be a solution of f(x), the answer must be 0

x^2+1=0 when x=-1

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The answer is -1 and 12
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3 0
3 years ago
What is the area of the figure?
son4ous [18]
Yes. 95 is correct.
You have three congruent "indentations" in the right hand side. Thus each section must be 15/3 = 5 cm long.
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5 0
3 years ago
Write an equation for a parabola in which the set of all points in the plane are equidistant from the focus and line. F(–2, 0);
UNO [17]
The line is called the directrix.  Here we have a vertical directrix, so a parabola sideways from usual.

Geometry is best done with squared distances.  The squared distance from an arbitrary point (x,y) to the vertical line x=2 is (x-2)^2.

We equate that to the squared distance of (x,y) to the focus (-2,0): 

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x^2 -4x + 4=x^2 +4x +4 + y^2

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We could call that done.  A more standard form might be

x =- \dfrac 1 8 \ y^2

8 0
3 years ago
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