avi49
28.02.2020 •
Mathematics
In ABC, IZB= 90°, cos(9 = 17, and AB = 16 units.
units.
Based on this information, mzA= m2C= y, and AC=
Note that the angle measures are rounded to the nearest degree.
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Ответ:
ax²+bx+c is -b/2a
the axis of symetry is the x value of the vertex so just put the axis of symetry for x an evaluate
4x²-8x-3
-b/2a=-(-8)/(2*4)=8/8=1
input for x
4(1)²-8(1)-3=4-8-3=-7
(1,-7) is vertex
A is answer