You can put h on -1 and sum on 0.4. Also, you put 1.4 in the wrong place. It should be three more places to the right.
        
             
        
        
        
Dividing fractions is the same as multiplying by its reciprocal so you can change the equation to this

And you can simplify by eliminating the fours and multiplying straight across 

You can pull out - 7 from the top and 2 from the bottom so you have this 

And then you can cancel out to (2-x) to get an answer of 
 
 
        
        
        
(x³y²)⁵
Split it for your convenience,
(x³)⁵.(y²)⁵
x¹⁵y¹⁰
So, your final answer is x¹⁵y¹⁰
        
             
        
        
        
Answer:
360 cm cubed
Step-by-step explanation:
Use the volume formula. 
V=whl
V=12 x 6 x 5 
V=360
 
        
             
        
        
        
Answer:

Step-by-step explanation:
An apothem is a perpendicular drawn from the centre of the triangle to one of its sides.
The three apothems OD, OE, and OF divide  ∆ABC into six smaller congruent triangles.
1. Area of ∆OCD
CotOCD = OD/OC
cot30 = CD/6
√3 = CD/6
CD = 6√3
A= ½bh
A = ½ × 6√3 × 6 = 18√3  in²
2. Area of ∆ABC
A = 6 × area of ∆OCD = 6 × 18√3 = 108√3 in²
