Answer:
put a picture up
Step-by-step explanation:
 
        
             
        
        
        
Here,
let width(b)be x then,
length (l)=9cm+x
area =112 sq cm
now,
area of rectangle=l*b
 or, 112=(9+x)x
 or, 112=9x+x^2
 or, 0=x^2+9x-112
 or, 0=x^2+(16-7)x-112
 or, 0=x^2+16x-7x-112
 or, 0=x(x+16)-7(x+16)
 or, 0=(x-7)(x+16)
either,
 0=x-7
 or,7=x
 x=7cm
 Or, 
 0=x+16
 or, -16=x 
 x= -16[impossible,as distance is never negative] so,
x=7cm 
therefore,length = 7cm + 9 cm = 16cm and width = 7cm. 
;)
        
                    
             
        
        
        
The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the culture after 2 hours and 350 bacteria after 4 hours.
 
        
             
        
        
        
Answer:
https://www.calculator.net/mean-median-mode-range-calculator.html
Step-by-step explanation:
use this website it helps so much
 
        
                    
             
        
        
        
Answer:
the answer is 23. even tho it says he had 30 at the time you must subtract 7 because thats what he started with. hope i could help! :D
Step-by-step explanation: