Answer 
Step-by-step explanation:
(15x-8y)=52
180=90+52+x
x=38
System of equations:
15x-8y=52
6x+14y=38
y=-6.5+15/8x
6x+14(-6.5+15/8x)=38
6x-91+26.25x=38
32.25x=129
x=4
15(4)-8y=52
60-8y=52
-8y=-8
y=1
x=4
 
        
             
        
        
        
Answer:
the answer is 0.30
Step-by-step explanation:
600/20=30
two decimal place=0.30
 
        
             
        
        
        
Answer:
85500000
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
the total area is 15.6 square units
Step-by-step explanation:
hello, 
you can  find the total area  dividing the shape into two known shapes
total area= area of the trapezoid +area of the semicircle
then          
step one
find the area of the isosceles trapezoid using

where
a is the smaller base
b is the bigger base
h is theheight
A is the area
let
a=2
b=5
h=4
put the values into the equation

Step two 
find the area of the semicircle
the area of a circle is given by

but, we need the area of  half circle, we need divide this by 2

 now the diameter of the semicircle is 2, put this value into the equation

find the total area
total area= area of the trapezoid +area of the semicircle

so, the total area is 15.6 square units
Have a good day.