Question

B A computer rando...4) Student Dashboard...Save & Exit CertifyLesson: 9.7 The Dot ProductQuestion 7 of 12,Step 1 of 18/15CorrectCalculate the following dot product.

Answer 1

From the question we were asked to calculate the dot product of (-5, 7) . (3, 7)

in order to calculate this, we use the component formula for the dot productof two dimensional vectors, which states that:

a . b = a1b1 + a2b2

so lets take:

a = (-5, 7)

b = (3, 7)

So,

a1 = -5

a2 = 7

b1 = 3

b2 = 7

a . b = -5(3) + 7(7)

= -15 + 49

= 34

Therefore, the dot product is 34