Answer:
(2x+1)(x+3)
2x(x+3)+1(x+3)
2x2+6x+x+3
2x2+7x+3 (2x2 means two x square)
if you want you can also multiply 2x+3 by x+3
like this:
(2x+1)(x+3)
x(2x+1)+3(2x+1)
2x2+x+6x+3
2x2+7x+3 (2x2 means two x square)
They will both give you the same answer.
 
        
             
        
        
        
Answer:
no
Step-by-step explanation:
5 books are $2.50, mean that 10 books should only be $4.00 not $4.50. Also making the 15 for $6.00 only $5.50. All because 5 books would be $2.50.
 
        
             
        
        
        
 <span>let: 
X = the distance of the bottom of the ladder from the wall at any time 
dX/dt = rate of travel of the bottom of the ladder = 1.1 ft/sec 
A = the angle of the ladder with the ground at anytime 
dA/dt = rate of change of the angle in radians per second 
X = 10 cos A 
dX/dt= -10 sin A dA/dt = 1.1 
dA/dt = -1.1/(10 sinA) 
When X = 6; cosA = 6/10; sinA = 8/10 
Therefore: 
dA/dt = -1.1/(10 x 0.8) = -0.1375 radiant per second. </span>
        
             
        
        
        
Answer:
()=10
Step-by-step explanation:
 
        
             
        
        
        
Answers:

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Work Shown:


P = perimeter

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A = area
