Answer:
-8 hope this helps
Step-by-step explanation:
It is just the multiplication of vectors. We'll multiply corresponding pairs together. The general formula for the pairs of (

;

) and (

;

) is

*

+

*

= (-6)*(-3)+4*6=18+24=42
Answer:
B
Step-by-step explanation:
5^2 - 3^2 = 4^2 So you know that 4 is the height. 4^2 + 7^2 is 65. Find the square root. Square root of 65.