Answer:
what are paralellograms------------>a four-sided plane rectilinear figure with opposite sides parallel.
mark me brainliest
Step-by-step explanation:
For the given vectors
and 
The dot product of vectors a and b is defined as = 
So, 

= -16+12
= -4
Answer:
The 2nd choice ( the one that starts with square root of 5 )
Step-by-step explanation:
I turned all of the choices into decimals so they had the same playing field then I put them from least to greatest and I got square root of five, 5/2, 2.717171717171, 2 and 3/4.
The answer is 240 :3
60+60= 120
120+60 = 180
and 60 more would be 240
60 fours would be 240
3 60's would be 180. So your answer is 240