Answer:
The first question answer is Fred. The second one is 1/7. Sorry that is all i know.
Step-by-step explanation:
 
        
             
        
        
        
The coordinate (5,-6) lies in the fourth coordinate, because the first is x positive y positive, the second is x negative and y positive, the third is x negative and y negative, and the fourth is x positive y negative. This is x positive y negative, so it is in the fourth quadrant.
        
                    
             
        
        
        
9514 1404 393
Answer:
- (2x-10) +x +(x+10) = 180
- x = 45
- (2x-10)° = 80°
- (x+10)° = 55°
- x° = 45°
Step-by-step explanation:
The equation is an expression of the fact that <em>the sum of the angles in a triangle is 180°.</em>
   (2x -10)° +x° +(x +10)° = 180°
For the purposes of the answer box, I'd leave off the degree symbol:
   (2x -10) +x +(x +10) = 180
__
This simplifies to ...
   4x = 180
   x = 45
Then the angles (CW from top) are ...
   (2·45 -10) = 80°
   (45 +10)° = 55°
   (45)° = 45°
 
        
             
        
        
        
Answer:
10.5 I think 
Step-by-step explanation:
(1/2) *12 is 6
(1/2)*21 is 10.5
 
        
             
        
        
        
First convert the terms to fractional exponents
u  =  t^2/3  - 3t^3/2
differentiating
u'  =  2/3 t^ (2/3 - 1) - 3* 3/2  t^(3/2 - 1)
     =  2/3 t ^(-1/3) - 9/2 t ^(1/2)
     =  2 / (3∛t) -  9 √ t / 2   in radical form