20 = 2 x 2 x 5 
15 = 3 x 5 
common divisor (CD) of 20 and 15 is 5 so n should be 5 and each group has 4 boys and 3 girls. 
If there are more than one CD, then there are more than one answer. 
If they ask for the largest number of groups, greatest common divisor (GCD) will be the answer.
        
             
        
        
        
Let
x-------> the amount of  solution
 solution
y--------> the amount of  solution
 solution
we know that
 
 
so

 -------> equation A
 -------> equation A
 -------> equation B
 -------> equation B
substitute equation A in equation B




find the value of y


therefore
The student need  of
 of  solution and
 solution and  of
 of  solution
 solution 
<u>the answer is</u>
A) The percent values were written incorrectly in the equation
B) The amount of 7% solution should be written as 1 – x, not x – 1.
 
        
                    
             
        
        
        
Answer:
20
Step-by-step explanation:
The formula for circumference is 2 r, where r stands for radius. Therefore, the circumference of this circle can be defined by:
r, where r stands for radius. Therefore, the circumference of this circle can be defined by:
2 r
r
2 10
10
20
Hope this helps :) Please contact me if you have any questions!
 
        
                    
             
        
        
        
<span>1. Find the magnitude and direction angle of the vector. 
2. Find the component form of the vector given its magnitude and the angle it makes with the positive x-axis.
<span>3. Find the component form of the sum of two vectors with the given direction angles.</span></span>
        
             
        
        
        
Can you rephrase it? (maybe write it out in numbers?)