Well the area of a trapezoid is defined by the following formula:
A = 

 where b₁ and b₂ are the bases of the trapezoid and h is the height of the trapezoid.
Let's plug in what we know into this formula:
h = 7  the perpendicular distance between the two bases
b₁ = 15  the shorter parallel side
b₂ = 25  the longer parallel side made up of 4 + 15 + 6
so, A = 

This is in square units of measure of course, so 140 in² 
 
        
        
        
Answer:
81
Step-by-step explanation:
13 * 6 is 78
78 + 3 is 81
~hope this helps~
 
        
             
        
        
        
Answer:
\left(x+3\right)\left(x-9\right)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Σxi =56.61
Σxi²=196.23
Step-by-step explanation:
X be the random variable represents area of scleral lamina (mm2) from human optic nerve heads
Σxi can be obtain by adding all x values
Σxi=2.79+2.53+2.78+3.79+2.33+2.72+3.88+4.15+3.79+4.43+3.47+4.47+2.5+3.61+2.77+3.53+3.07=56.61
Σxi =56.61
Σxi² can be obtained by squaring x values and then adding them.
Σxi²=2.79²+2.53²+2.78²+3.79²+2.33²+2.72²+3.88²+4.15²+3.79²+4.43²+3.47²+4.47²+2.5²+3.61²+2.77²+3.53²+3.07²=196.233
Σxi²=196.23
 
        
             
        
        
        
Answer:
Tom's pay for the week should be over 500 dollars. Sorry if this isn't very helpful. :(
Step-by-step explanation: