Answer:
-2
Step-by-step explanation:
Well if we break -2x apart we see that it's really just -2 × x.
Now, let's say you completely forget this you can think of it like this:
-2x is, -2 and x.
Between these two terms x is the variable leaving -2.
You can try the same thing with these:
5x is ?
-9x is ?
50x is ?
You have to average out the total amount you pay by how many movies you see. For this deal, you must spend $16 (4 movies x $4) to get a fifth movie free. So, you are essentially spending $16 for 5 movies. To figure out how much the cost is per movie, divide the total cost by number of movies seen. $16/5 movies = $3.20 per movie
I believe the answer is smaller than
Answer:
u•u = 17
u•v = 13
v•u = u•v = 17
v•u/u•u = 13/17
Step-by-step explanation:
Given 2 column matrices
u = [-1 4] and v = [7 5]
Note that when computing product, we will multiply component wise.
To compute u times u, we will take the dot product of both column matrix.
u•u = [-1 4] • [-1 4]
u•u = (-1)(-1) + (4)(4)
u•u = 1+16
u•u = 17
To compute u times v, we will take the dot product of column matrix u and column matrix v.
u•v = [-1 4] • [7 5]
u•v = (-1)(7) + (4)(5)
u•v = -7+20
u•v = 13
v•u/u•u can be gotten by simply substituting the resulting values.
v•u/u•u = 13/17