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from scalar multiplication lesson under vectors. 4. The vectors a and b are perpendicular. Are the vectors 4a and -2b also perpendicular? Explain.6. The vectors

from scalar multiplication lesson under vectors.

4. The vectors a and b are perpendicular. Are the vectors 4a and -2b also perpendicular? Explain.6. The vectors x and y, are unit vectors that make an angle of 90* with each other. Calculate the value of |2x + y) and the direction of 28 + y

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