Answer: 
2x^2 +2x-4 
——————
2x^2-4x+2 
Factor out 2 from the expression 
2(x^2+x-2)
—————-
2(x^2-2x+1) 
Write x as a difference 
2(x^2x-x-2)
—————-
2(x^2-2x+1) 
Use a^2-2ab+b^2=(ab)^2
2(x^2x-x-2)
—————-
2(x-1)^2 
Reduce the fraction with 2 
x^2x-x-2
—————-
(x-1)^2 
Factor out x from the expression 
X*(x^2)-x-2
—————-
(x-1)^2 
Factor out negative sign from the expression 
X*(x+2)-(x-2)
—————-
(x-1)^2 
Factor out x+2 from the expression 
(x+2)(x-1)
—————-
(x-1)^2 
Simplify the expression 
x+2
——
x-1
        
             
        
        
        
Answer: 3 miles per hour
<u>Step-by-step explanation:</u>
Use the formula "distance (d) = rate (r) x time (t)" to create a system of equations.
Let "r" represent the rate they are rowing
Let "c" represent the current
                             time          rate      distance        <u>EQUATION</u>
Downstream:     4 hours     r + c       40 miles         4(r + c) = 40
Upstream:         10 hours    r - c        40 miles         10(r - c) = 40
Distribute, then eliminate r to solve for c:
Down: 4r + 4c = 40  →   5(4r + 4c = 40)  →   20r + 20c = 200
   Up: 10r - 10c = 40  → -2(10r - 10c = 40) → <u>-20r + 20c</u> =<u>  -80</u>
                                                                                 40c = 120
                                                                               <u> ÷40  </u>  <u>÷40 </u>
                                                                                     c =   3
 
        
             
        
        
        
9514 1404 393
Answer:
   2√5
Step-by-step explanation:
The side ratios in a 30-60-90 triangle are ...
   1 : √3 : 2
The longest side (x) is 2 times the length of the shortest side (√5), so ...
   x = 2√5
 
        
                    
             
        
        
        
the first one is 0.00001
Step-by-step explanation:
its on the screen
 
        
                    
             
        
        
        
Answer:
 The measure of two angles are shown in the diagram. 4x - 11 2x + 5 Which equation can be used to find the value of x? A. 6x - 6 = 180 X. 6 x + 64 = 180 B. 6x - 6 = 360 D. 6x + 84 = 180
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