"Spin" is just a word; we no longer think the electron is actually spinning, but the mathematics is similar. I'm honestly not sure whether that answers your question or not.
y = 3x2+2x-1 Line of symmetry: x = -1/3 Vertex coordinate: (-1/3, -4/3)
The axis of symmetry for a parabola of the form y = ax2 + bx + c is x = -b/2a So the axis is x = -2/2*(-3) or x=1/3
91
Zero.
The answer is -8
I have revised this answer. This question is harder than it looks!The numbers 69, 6009 or 98886, for example, would have rotational symmetry (looks the same when rotated by 180 degrees) but not reflection symmetry.So I think the answer is going to be something like:A number which consists of the digits 6 and 9 plus or minus the digits 0 & 8 AND has the digits in the necessary order to maintain rotational symmetry.
y = 3x2+2x-1 Line of symmetry: x = -1/3 Vertex coordinate: (-1/3, -4/3)
A cymbal (minus the logo) A drum depending on the skin and finish A tambourine a Djembe a Bongo a conga a Tar
The axis of symmetry for a parabola of the form y = ax2 + bx + c is x = -b/2a So the axis is x = -2/2*(-3) or x=1/3
x = -4 The equation to find this is -b/2a with 8 being the b and 1 being the a.
82
91
8
The planet Venus spins very slowly in the opposite direction of almost everything else in the solar system. That's what the minus sign next to its rotational period means; it takes 243 days to spin, and spins "backward".
a minus take away a minus makes a minus
A minus plus a minus will give a sum with a minus also.
A minus plus a minus is not necessarily positive. A minus multiplied by a minus is. The reason being that the minus of a minus is a positive. It's a double negative.