Answer:
A is the Answer.
Step-by-step explanation:
You multiply x with 2x ( Gives you 2x^2 ) then -1 with 2x ( Gives you -2x ) then -8 with x ( Gives you -8x ) then -1 with-8 ( Gives you +8 ), finally you add the two x's ( not x^2 ). Your fibal answer will be 2x^2 - 10x +8.
Hope this helps.
Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The vector is a=<-4,-3,5>
Generally the unit vector is
Here y represent the y-coordinate
So
=>
Generally the resultant of a unit vector is 1
So

Hence

Taking the square of both sides

=> 
=>
=>
Rationalizing
=>
Given that the first coordinate is positive
Hence the unit vector is
=> 
Use the proportion formula:
5mm/32= Xmm/160
=22.22 mm
Answer:
The vertex of angle is S.
Hope this helps!!