Answer: Two-dimensional vectors can be represented in three ways. Here we use an arrow to represent a vector. Its length is its magnitude, and its direction is indicated by the direction of the arrow. The vector here can be written OQ (bold print) or OQ with an arrow above it.
The answer for this problem is going to be 30 because you take the 50° that you already have and subtract 20° and you get 30
Answer: A. -4
Step-by-step explanation:
6/((-4)^2-9)-(1/-4-3)= 6/7+1/7=1
Answer:
5040 ways
Step-by-step explanation:
That is 7 books.
So the number of ways is factorial 7 , written 7!.
= 7*6*5*4*3*2*1
= 5040 ways
You should get constants to one side, and variables to the other. Like this:
4+4x=4x+7
Subtract 4x from left side: 4=4x+7-4x
Combine 4x, that would give you 0: 4=7
But... that isn't possible? I'm not completely sure, is the question just asking you to simplify?