31 + (4*2^2 + 8*2) + (3*2^2 + 5*2 + 20) + (7*2 + 30) = 129
Answer:
b = -a
Step-by-step explanation:
Since a and b are equally distant to zero but in opposite directions, a and b are opposites, or additive inverses.
The sum of additive inverses is zero.
a + b = 0
b = -a
The answer is 16 meters. I hope this helps you
The number of possible combinations is given by
... C(18, 3) = 18!/(3!(18-3)!) = 18·17·16/(3·2·1) = 816 . . . . possible combinations
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There are 18 ways to choose the first one; 17 ways to choose the second one, and 16 ways to choose the 3rd one. The same 3 students can be chosen in any of 3! = 6 different orders, so the product 18·17·16 must be divided by 6 to get the number of possible combinations in which order doesn't matter.
From the graph given, the coordinates of point F are:
(x, y) ==> (-5, -3)
Using rotation rules, after a 90° clockwise rotation about the origin, (x, y) becomes (y, -x)
Thus, after a 90° clockwise rotation, we have:
(x, y) ==> (y, -x)
(-5, -3) ==> (-3, 5)
Therefore, 90° clockwise rotation about the orign, the coordinate