Question

let u=<4, -1> and v=<3, 5>. what is the absolute value of u+v rounded to the nearest hundredth?

Answer 1

if u = <a,b> and v = <c,d>

then

u+v = <a+c, b+d>

Answer 2

and

if

z = <p,q>

then

|z| = sqrt( p^2 + q^2 )

Answer 3

the answer choices are

a) 3.3
b) 6.1
c) 8.1
d) 9.2

Answer 4

what did you get for u+v

Answer 5

7, 4

Answer 6

now use the idea that if z = <p,q>, then |z| = sqrt( p^2 + q^2 )

Answer 7

in this case, p = 7, q = 4

Answer 8

49+16 which is 65

Answer 9

then take the square root of that

Answer 10

8.1! awesome thank you so much!

Answer 11

you got it, yw

Answer 12

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