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neariah24
25.07.2019 •
Mathematics
Which equation does the graph of the systems of equations solve? quadratic graph opening down and quadratic graph opening up. they intersect at negative 4, 0 and negative 3, negative 1. x2 − 2x + 8 = x2 − 8x − 16 x2 + 6x + 8 = −x2 − 8x − 16 −x2 − 2x + 8 = 2x2 − 8x − 16 −x2 − 2x + 8 = 2x2 − 8x + 16
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Ответ:
x² +6x +8 = -x² -8x -16
_____
The quadratic with those two points as solution will be of the form
.. a(x +4)(x +3) = 0
.. a(x^2 +7x +12) = 0
When you subtract one side or the other to put the equation in this form, only the 2nd selection matches:
.. 2(x^2 +7x +12) = 0
Ответ:
117.86
Step-by-step explanation:
Find the area of a circle:
A=πr2
3.14 times 7^2
= 153.86
Area of the square:
Length times Width
6 times 6
= 36
Subtract both of the areas:
153.86 - 36
= 117.86
117.86 is your answer.