Step-by-step explanation:
because because that would be subtracting positive 10 by -10. not adding -10 + -10 which would be 20
 
        
                    
             
        
        
        
Answer:
 b= 10 miles/hr and c= 5 miles/hr
Step-by-step explanation:
Let it's downstream and upstream speed be d and u respectively
also speed of the boat be b and speed of stream be c.
as per question d = 150/10= 15 miles/hr 
and, u= 150/30= 5 miles/hr
also we know d= b+c = 15.....i and u = b-c= 5....ii
solving i and ii we get b= 10 miles/hr and c= 5 miles/hr
 
        
             
        
        
        
Answer:
The unit vector in component form is  or
 or  .
.
Step-by-step explanation:
Let be  , its unit vector is determined by following expression:
, its unit vector is determined by following expression:

Where  is the norm of
 is the norm of  , which is found by Pythagorean Theorem:
, which is found by Pythagorean Theorem:


Then, the unit vector is:


The unit vector in component form is  or
 or  .
.
 
        
             
        
        
        
Integers are positive and negative whole numbers. Integers between -5 and 3 are -4, -3, -2, -1, 0, 1, 2
        
                    
             
        
        
        
Answer:
perimeter = 16x+9x+8x+11
simplified perimter = 33x+11
Step-by-step explanation:
this isnt even close to 100 pts but okay