The should be 158 ways, because 9*8+8*7+6*5=158.
        
             
        
        
        
Answer:
See attached diagram
Step-by-step explanation:
Graph the solution of the inequality  First, draw the dotted line
 First, draw the dotted line  (dotted because the sign of the inequality is <). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (red part on the diagram).
 (dotted because the sign of the inequality is <). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (red part on the diagram). 
Graph the solution of the inequality  First, draw the solid line
 First, draw the solid line  (solid because the sign of the inequality is ≥). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (blue part on the diagram).
 (solid because the sign of the inequality is ≥). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (blue part on the diagram). 
The intersection of both regions is the solution of the system of two inequalities.
 
        
             
        
        
        
Hey there!
The answer is false. A 90 degree angle is called a right triangle. Any angle less than 90 degree is called an acute angle. Any angle more than 90 degree is called an obtuse angle
        
                    
             
        
        
        
Answer:
5.1x - 1.49y
Step-by-step explanation:
We need to add or substract like terms. 
like terms are the terms that have the same variable, in this case:
3.27x and 1.83x are like terms, and adding them we get: 
3.27x + 1.83x = 5.1x (you add only the coefficients and the x stays the same)
we do the same for the terms with 'y':
1.28y and −2.77y are like terms, but in this case we must substract because of the − sign:
1.28y −2.77y = -1.49y
the final answer is the conjunction of the two results that we obtained:
5.1x - 1.49y
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
subtract 5 from both sides