Answer:
a = 
Step-by-step explanation:
Given
ai + bj and 5i - 2j are perpendicular and b = 3, that is
ai + 3j and 5i - 2j are perpendicular, then
The scalar product = 0 , that is
5a - 6 = 0 ( add 6 to both sides )
5a = 6 ( divide both sides by 5 )
a = 
Answer:
18
Step-by-step explanation:
3x6=6x3=6+6+6=12+6=18
I believe its B because it matched the y intercept of the question as you can see by the picture I put.
Answer:
BK=9
Step-by-step explanation:
A midsegment is one half of the length of the base. So, If the base, which is ST is 18, the midsegment will be 18/2=9
Answer:
A
Step-by-step explanation:
Hopefully this helps!