It is b: False 1,729 isn’t divisible by 9
        
             
        
        
        
Answer:
$262.5
Step-by-step explanation:
Given data
Commission earned= 7.5%
Sales for last week=  $3,500
Let us find the amount of the commission
=7.5/100* 3500
=0.075*3500
=$262.5
Hence the commission earned last week is 
$262.5
 
        
             
        
        
        
Sorry what question? I don’t see anything so I can’t help.
        
             
        
        
        
Answer:
20.04
Step-by-step explanation:
He marked it down to 67%. Not up
 
        
             
        
        
        
The Prove that two non-zero vectors are collinear if and only if one vector is a scalar multiple of the other is given below.
<h3>What are the proves?</h3>
1.  To know  collinear vectors:
∧ ⁻a ║ ⁻a
If  ⁻b = ∧ ⁻a
then |⁻b| = |∧ ⁻a|
So one can say that  line ⁻b and ⁻a are  collinear.
2.  If ⁻a and ⁻b  are collinear
Assuming |b| length  is  'μ' times of |⁻a | 
Then | 'μ' ⁻a| = | 'μ' ⁻a|
So  ⁻b = 'μ' ⁻a
Learn more about vectors  from
brainly.com/question/25705666
#SPJ1