Answer:
Gerri spends 1/7 (A). 
Step-by-step explanation:
If Gerri spends 1/21 of her money on pencils and 2/21 of her money on paper, adding these two fractions together will give us the total fraction of her money that she spent.  Since 1/21 and 2/21 have the same denominator, we can add the numerators to get 3/21.  However, fractions must always be in simplest form, meaning if the numerator (top number) and denominator (bottom number) can both be divided evenly by the same factor, then the fraction can be simplied to lower numbers.  In this case the number 3 and the number 21 can both be divided evenly by 3:  (3÷3)/21÷3) = 1/7. 
 
        
                    
             
        
        
        
Answer:
The answer is that she would pay $65.56 in finance charges at the end of the month. 
Step-by-step explanation:
Given: APR = 19.99%
Carry Over Balance: $398.97
The APR or Annual Percentage Rate, is calculated daily. You will need to get the daily periodic rate, or DPR, so divide the APR by 365:
19.99% = .1999
.1999 / 365 = .005477 (This is the Approximate DPR, rounded up to .005477)
To get the finance charge, multiply the average daily balance by the DPR and then by 30 days:
398.97 * .005477 * 30 = $65.56 finance charge for this carry over balance, at the end of the month. This assumes that the balance is the average daily balance.
Hope this helps!!  Have a great day!
 
        
             
        
        
        
First let us convert 0.01 into fraction: 

Now we convert 100 and 4 into perfect squares as follows:

Now we use the property of :


 
        
             
        
        
        
The chord that goes through the center of a circle, the diameter, is the longest chord in a circle.  Any other chord will be shorter than this.  The farther a chord is away from the circle, the shorter it will be.  This means that chord CD is shorter than chord AB.