Scalar products

The vectors a = (3, -2), b = (-1, 5) are given. Determine the vector c for which a. c = 17; b . c = 3

Final Answer:

x =  7
y =  2

Step-by-step explanation:

a=(3,2) b=(1,5) c=(x, y)  a . c = 17 b . c = 3  (3,2) (x,y)=17 (1,5) (x,y)=3  3x2y=17 x+5y=3  3 x2 y=17 x+5 y=3  3x2y=17 x5y=3  Row231 Row1Row2 4.33y=8.67  y=4.333333338.66666667=2 x=317+2y=317+2 2=7  x=7 y=2



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You need to know the following knowledge to solve this word math problem:

geometryalgebragoniometry and trigonometryGrade of the word problem

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