
This statement can be represented as  , since the quotient is the answer to a division problem.
, since the quotient is the answer to a division problem.
Divide. 
Multiply. 
Simplify.  When the numerator and denominator are the same, the fraction is equal to 1. 
 
        
             
        
        
        
Answer:
-8/5 or 1.6
Step-by-step explanation:
if you get the 2 points on the graph and use slope formula you get the answer
 
        
             
        
        
        
Answer:
Real values of x where x < -1
Step-by-step explanation:
Above the x-axis, the function is positive.
The function is decreasing when the gradient is negative.
The function has a positive 

coefficient, therefore the vertex is a local minimum;
This means the gradients are negative before the vertex and positive after it;
To meet the conditions therefore, the function must be before the vertex and above the x-axis;
This will be anywhere before the x-intercept at x = -1;
Hence it is when x < -1.
 
        
                    
             
        
        
        
As soon as I read this, the words "law of cosines" popped 
into my head.  I don't have a good intuitive feeling for the 
law of cosines, but I went and looked it up (you probably 
could have done that), and I found that it's exactly what 
you need for this problem.
The "law of cosines" relates the lengths of the sides of any 
triangle to the cosine of one of its angles ... just what we need, 
since we know all the sides, and we want to find one of the angles.
To find angle-B, the law of cosines says
       b² = a² + c² - 2 a c cosine(B)
B  =  angle-B
b  =  the side opposite angle-B = 1.4
a, c = the other 2 sides = 1 and 1.9
                  (1.4)² = (1)² + (1.9)² - (2 x 1 x 1.9) cos(B)
                 1.96  =  (1) + (3.61)  -  (3.8) cos(B)
Add  3.8 cos(B)  from each side:
                 1.96 + 3.8 cos(B) = 4.61
Subtract  1.96  from each side:
                             3.8 cos(B) =  2.65
Divide each side by  3.8 :
                                  cos(B)  =  0.69737  (rounded)
Whipping out the
trusty calculator:
                                 B  = the angle whose cosine is 0.69737
                                      =  45.784° .
Now, for the first time, I'll take a deep breath, then hold it
while I look back at the question and see whether this is 
anywhere near one of the choices ...
By gosh !  Choice 'B' is  45.8° !                    yay !
I'll bet that's it !
        
             
        
        
        
Answer: B. 105 mph 
Step-by-step explanation: