Convert the numeral to the requested form.Some systems of enumeration are multiplicative. If you want to represent 30 things, you write the symbol for 3 followed by the symbol for 10. In China and Japan the symbol for 3 is 
, and the symbol for 
Thus, 30 is symbolized 
. If the symbol
for 8 is 
and the symbol for 6 is 
, how do the Chinese write 80?
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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True or false?For any data set, the range is equal to twice the interquartile range (the interquartile range is Q3 - Q1 ).
A. True B. False
Mathematics
Perform the indicated operations on a calculator. Express the result with the proper accuracy and precision. Assume that all numbers are approximate.
+ 
A. -1.00 B. -1.0000 C. -1 D. -1.000
Mathematics
Use Cramer's rule to solve the system of linear equations.7x - 7y = 358x + 4y = 88
A. (9, 4) B. (-8, -6) C. (-9, 4) D. No solution
Mathematics
Solve the equation.
x = 
A. 
B. {4}
C. {-4}
D. 
Mathematics