It has one solution that is the answer
D. 4/8 is your answer hope this helps
Answer:
The first one
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan30° =
=
= 
Multiply both sides by 8
8 × tan30° = b, that is
b = 8tan30°
Answer:
b. (10,10,0)
Step-by-step explanation:
r+v can be evaluated if the vectors/matrices have the same dimensions.
These do. They are both 1 by 3 vectors.
Just add first to first in each.
Just add second to second in each.
Just add third to third in each.
Example:
(5,-5,6)+(1,2,3)
=(5+1,-5+2,6+3)
=(6,-3,9)
Done!
In general, (a,b,c)+(r,s,t)=(a+r,b+s,c+t).
r+v
=(7,3,9)+(3,7,-9)
=(7+3,3+7,9+-9)
=(10,10,0)
Done!