Use Pythagorean theorem:
9i-j = sqrt (9^2 - 1^2) = sqrt(81-1) = sqrt80
now divide both terms in V by that:
u = 9/sqrt(80)i - 1/sqrt(80)j
see attached picture:
Answer:
Q.#1 is a
Q.#2 is d
Step-by-step explanation:
hope this helps:)
Answer:
Step-by-step explanation:
Just plug in
7 - 2(2) = 3
Answer:
9/100
Step-by-step explanation:
Hi there!
So all you need to do is replace the x in that equation with -1.
After you simplify the answer comes to 0, which leaves your correct
choice to be D. 0
Happy studying!
~Brooke❤️