Answer:
0.9x-9 x=10
Step-by-step explanation:
Answer:
23+1•4-3 = 24 (Simplify the expression)
20+10-4•2 = 22 (Simplify the expression)
3+52-6•4 = 31 (Simplify the expression)
Hope this helps you out and is what you were looking for! ☺
-Karleif ☺-
Step-by-step explanation:

<span>get their dot product, if the dot product is 0, then they're orthogonal (perpendicular).
also keep in mind that, if two vectors bear the same slope, namely <a,b> and <c,d> and the simplified slope b/a is the same value as d/c, then they're parallel vectors.</span>