Which of the following best describes the graph of y=-x^2
2 answers:
Answer:
Step-by-step explanation:
to draw the graph of y = - x²............(1)
the above given equation is the equation of parabola.
now, comparing this equation (1) will general equation of parabola which is
x² = 4 a y
a = -1/4
this means the parabola vertex is at origin (0,0)
parabola will be open downward.
the graph shown is the required graph.
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Answer:
x = 41.2
Step-by-step explanation:
Assuming the dotted line at the top is parallel to the segment with length x, it follows from the alternate interior angles theorem that the interior angle of the triangle (marked in diagram) is also 27º.
Using SOH-CAH-TOA, we get that tan(27º) = 21/x, so x = 21/tan(27º), which is approximately equal to 41.2.
