To determine the number of quarts of a 20% acid solution that must be mixed with a 55% acid solution to obtain 70 quarts of a 33% acid solution, you must solve the equation 
. How many quarts of the 20% acid solution should be included in this situation?
A. 
quarts
B. 
quarts
C. 
quarts
D. 
quarts
E. 
quarts
Answer: A
Mathematics
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R1 = 47 ê, R2 = 53 ê, and R3 = 90. What is the value of RT?
a. 9.75 ê
b. 19.51 ê
c. 45.00 ê
d. 63.98 ê
e. 190.0 ê
Mathematics
Find the Social Security tax for the current pay period. Assume a 6.2% FICA rate up to a maximum of $110,000.Gross Earnings This Year: $99,405.47Current Period Earnings: $4033.67
A. $656.86 B. $12,733.05 C. $250.09 D. $260.09
Mathematics
Solve the equation.3(x + 3) + 11 = 5(x + 1) + 13
A. {1} B. {8} C. {13} D. {3}
Mathematics
For what values of x does the series converge conditionally?
A. x = 1 B. x = -1 C. x = ±1 D. None
Mathematics