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shygrl05
22.07.2019 •
Mathematics
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Ответ:
a) Squared term is x
Parabola either opens up or down.
Positive coefficient means upward opening and negative coefficient means downward opening
b) Squared term is y
Parabola either opens right or left
Positive coefficient means rightwards opening and negative coefficient means leftwards opening
Since the coefficient is positive with squared x term, the parabola opens upward.
So the answer to this question is option D
Ответ:
a squared + b squared = c squared
a and b represent the sides of the triangle (aka the length of a side of the square), and c represents the hypotenuse (aka the diagonal).
9 squared + 9 squared = c squared
81 + 81 = c squared
162 = c squared
take the square root of both sides
81= x