Find the real solutions of the equation.
= 9
A. {86}
B. {196}
C. {81}
D. {76}
Answer: D
Mathematics
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Evaluate the expression.- 
3
A. - 
B. - 
C. 
D. 
Mathematics
Translate to an equation and solve. 120 is what percent of 240?
A. 50% B. 40% C. 100% D. 200%
Mathematics
Solve.It is estimated that y, the number of items of a particular commodity (in millions) sold in the United States in year x, where x represents the number of years since 1990, is given by the formula 
That is, 
represents 1990, 
represents 1991, and so on. According to the formula, how many items sold in 2000?
A. 20.72 millions B. 51.20 millions C. 19.16 millions D. 3.56 millions
Mathematics
Use a calculator to find the approximate value of the expression rounded to two decimal places.cos 5°
A. 0.28 B. 1.00 C. -0.28 D. -1.00
Mathematics