Answer:
31.5
Step-by-step explanation:
You need to first use the formula of calculating surface area of a cuboid
SA=2(lw+lh+wh)
now you put the values in as 
H=3
W=1.5
L=2.5
You get 31.5
Hope this Helps!
 
        
                    
             
        
        
        
Answer:
 2 a
Step-by-step explanation:
Possible derivation:
d/dx(2 a x + 2 a y)
Differentiate the sum term by term and factor out constants:
 = 2 a (d/dx(x)) + d/dx(2 a y)
The derivative of x is 1:
 = d/dx(2 a y) + 1 2 a
The derivative of 2 a y is zero:
 = 2 a + 0
Simplify the expression:
Answer:  2 a
 
        
             
        
        
        
Answer: The first number that appears in both sequences is 28.
Step-by-step explanation:
Let's write down numbers from each of the sequences
Sequence 1) We need to start from 7 and multiply 4 
7x4=28, 28x4=112
The sequence is 7,28,112...
Sequence 2) We need to start from 8 and add 5
5+8=13, 13+5=18, 18+5=23, 23+5=28
The sequence is 8,13,18,23,28...
They both have 28
 
        
                    
             
        
        
        
Answer:
A function is a function that passes the vertical line test
Step-by-step explanation:
the vertical line test direction: 
draw a line straight down you graph if it hits the x axis two time it not a function 
 
        
             
        
        
        
2744 is the answer. can be written as 14^3 just in case you need to know that.