Answer:
5 of the 7 boxes are 8 inches in height 
Step-by-step explanation:
Mathematically;
1 ft = 12 inches 
So, 5 ft will measure 5 * 12 = 60 inches 
So from what we have , 
We want to combine 8 and 10 inches to give 60 inches total 
Let the number of 10 inches be x and the number of 8 inches be y
Mathematically;
x + y = 7 •••••(i)
10x + 8y = 60 ••••(ii)
From equation i, x = 7-y
Put this in equation ii
10(7-y) + 8y = 60
70-10y + 8y = 60
70-60 = 10y-8y
2y = 10
y = 10/2
y = 5 
 
        
             
        
        
        
<span><span>To find the area of a rectangle, multiply the length by the width. The formula is:</span><span>, where  is the area,  is the length,  is the width, and · means multiply.</span><span>A square is a rectangle with 4 equal sides. To find the area of a square, multiply the length of one side by itself. The formula is:</span><span>   or  ,  where A is the area, s is the length of a side, and · means multiply.</span></span>
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
[in picture]
Step-by-step explanation:
I didn't see any options, so I used Desmos, which is a graphing calculator. I entered the equation in and it came up with this: