Parallel: line p with slope 2/5
Perpendicular: line n with slope -5/2
the other two would be neither.
2y=1/2x+10
divide by two
y=1/4x+5
Answer:
x=-4
Step-by-step explanation:
divide 32 by 8 and move the negative sign to the result.
The dot product is used to determine the magnitude of the resultant vector of two component vectors. It is expressed as a·b. It does not literally mean that you multiply their values. Instead, you multiply their matrices. However, since we cannot find matrices, let's just find the resultant vector through theorems involving triangles. By cosine law:
R = √[a² + b² - 2abcos(3π/4)]
R = √[60² + 30² - 2*60*30*cos(3π/4)]
R = 83.94
Thus, a·b = 83.94
