Answer:
D. v=<20, 52>
Step-by-step explanation:
Vector u can be written in component form by subtracting its initial point from its terminal point:
u = (5, -4) -(15, 22) = <-10, -26>
We are told that v = -2u, so ...
v = -2<-10, -26> = <20, 52>
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Multiplying a vector by -1 reverses its direction; multiplying it by some factor k changes its magnitude by a factor of k. To reverse the direction and double the magnitude, we can multiply u by -2.
Step-by-step explanation:
12x + 3(x - 4) + 2x
17x-12
HOPE IT HELPS U
x=10.................................
Answer:
x = -1, y = 4.
Step-by-step explanation:
y = -x + 3
y = x + 5 Adding these 2 equation eliminates x:
2y = 0 + 8
y = 8/2 = 4.
Substituting for x in the first equation:
4 = -x + 3
4-3 = -x
1 = -x
x = -1.
A/B : 4/9 = 12/B
cross multiply
(4)(B) = (9)(12)
4B = 108
B = 108/4
B = 27
P = 4a...where a is the length of one side
P = 4(27)
P = 108 yds <=== perimeter of square B
