Answer:
128.1
Step-by-step explanation:
Since this is rounding to the nearest tenth , we look at the first number after the decimal place it's 0 so we look at the second number after the decimal place which is 9 , this rounds 0 up to 1
 
        
             
        
        
        
Answer:
9 ft 
Step-by-step explanation:
its volume is equal to the area by height;
 (2.5 x 3)h = 67.5 
h = 9ft 
 
        
                    
             
        
        
        
the height of the trapezoid of 5, i think.
my work: 
i used this formula: 2 x a + b / A
so, you plug in what you know.
2 x 8+6 / 35 = 5
 
        
             
        
        
        
Answer:algebra ok
Step-by-step explanation:
 
        
             
        
        
        
For number 11 the third angle would be equal X as the second angle is, since the two sides next to the those angles are congruent. Then you would have to set an equation saying that 2x + 38= 180 and then you can just solve for X