Use a calculator to find the value of the expression rounded to two decimal places.cos-1 
A. 98.21
B. 1.71
C. -0.14
D. -8.21
Answer: B
Mathematics
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Solve the equation.4x2 = 16
A. 2 B. -2 C. 5 D. ±2
Mathematics
Determine if the two fractions are equivalent.
and 
A. equivalent B. not equivalent
Mathematics
If one of the students is selected at random what is the probability he or she spent exactly 11 hours in the lab?
Use the following information to answer questions 2-10. 24 students in an engineering class were asked to record the number of hours spent in a lab during a week. The results are listed below. 3, 10, 21, 14, 8, 5, 1, 4, 13, 7, 9, 6, 11, 10, 6, 7, 12, 16, 1 , 7, 14, 1, 11, 8
Mathematics
Write the indicated term of the binomial expansion.(9x + 6)3; 3rd term
A. 1944x B. 1458x2 C. 36 D. 972x
Mathematics