Answer:
20 years
Step-by-step explanation:
9000/ 100= 900 = 10%
900/2= 450
450 x 2= 900
900 x 10= 9000
Now we multiply 10 by 2 because we doubled the value of our 450 into a 900 and now we get 20.
 
        
             
        
        
        
Maybe a picture of what the assigment is can help me give you an answer?
        
             
        
        
        
Answer:
40 lures
Step-by-step explanation
First, 10 for every 2  means multiplication. 2 goes into 8   4 times. 4x2=8
10 lures multiplied by 4 is 40. 
I hope this helps! ツ
 
        
             
        
        
        
STEP 1:
convert meters to centimeters
100 cm= 1 meter
= 100 cm/m * 2.5 m
= 250 cm
STEP 2:
x= length of first shelf
2x+18= length of second shelf 
x-12= length of third shelf
x+4= length of fourth shelf
since the whole board has to be used, add lengths of all shelves and set it equal to the whole length of the board (250 cm). 
x + (2x+18) + (x-12) + (x+4)= 250 cm
combine like terms
5x + 10= 250 
subtract both sides by 10
5x= 240
divide both sides by 5
x= 48
STEP 3:
find length of second shelf
= 2x + 18
= 2(48) + 18
= 114 cm
CHECK:
x + (2x+18) + (x-12) + (x+4)= 250 
48 + (2(48)+18) + (48-12) + (48+4)= 250
48 + (96+18) + 36 + 52= 250
48 + 114 + 36 + 52= 250
250= 250
ANSWER: Shelf two is 114 cm. 
Hope this helps! :)
        
             
        
        
        
Answer: Onggg frfr
Step-by-step explanation: