What is the product of 0.4 and 2.5
2 answers:
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Answer:
137
Step-by-step explanation:
First start with what you know. The measure of the interior angles of a triangle total to so 51 + 2x + x = 180, then 51 + 3x = 180, 3x = 129, so
x = 43, the exterior angle is on a straight line with x so
x + exterior angle = 180 [since they are supplementary], since x = 43 then
43 + e = 180, so e has to be 137
One could use the relation
where
are two vectors, 
denotes the norm of that vector, and 
is the angle between the two vectors.
Then the two vectors will be parallel if
or 
.
where
Then the two vectors will be parallel if