Answer:
25% is called a quarter of 900
Step-by-step explanation:

 
        
                    
             
        
        
        
Answer:
B(2,3),C(2,-3)
Step-by-step explanation:
On y-axis symmetry有手就行
 
        
             
        
        
        
Answer:
-5.238- 
or
Since the exponent of the scientific notation is positive, move the decimal point  6  places to the right.
1620000
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  
10
. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
Hope this helps :)
 
        
             
        
        
        
Answer:
48 liters
Step-by-step explanation:
First container = x
Second container has twice as much oil.
Second container = 2x
13 liters of oil was used from first container.
x - 13
7 liters of oil was used from the second container.
2x - 7
Second container has 3 times more oil than the first one.
2x - 7 = 3(x - 13)
x - 7 = 3(x - 13)
x - 7 = 3x - 39
2x = 32
x = 16
First container = 16 liters
second container = 16 x 2 = 32 liters
Total = 16 + 32 = 48 liters
 
        
                    
             
        
        
        
To begin lets say year one the population is 2,000
assume this in percent we can say that 2,000=100%
at the end of this year the population will have grown by 4% meaning that
100%+4% will be the new population =104%
but we know that 100%=2,000 so what about 104%=X?
so (104*2000)/100=2,080 
So year 1 the population will have grown by 80 people amounting to 2080 people. 
Now do it manually year by year until we reach the 15th year. i will help you up to year 3
2nd year= (2080*104)/100=2163.2
3rd year= (2163*104)/100=2249.728
(If you have more complex questions reach me at essaywritingpool.com)