Use a calculator to find the value of the expression rounded to two decimal places.tan-1 (-2.5)
A. -21.80
B. -68.20
C. -0.38
D. -1.19
Answer: D
Mathematics
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Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.9x-8/9z9/10
A. 
B. 
C. 
D. 
Mathematics
Determine if each ordered pair is a solution to the given system of inequalities in two variables.xy = 42x + y = -13(i) (-7, -6); (ii) (6, 7)
A. (i) No; (ii) No B. (i) Yes; (ii) No C. (i) Yes; (ii) Yes D. (i) No; (ii) Yes
Mathematics
Find the quotient and the remainder.x4 + 81 divided by x - 3
A. x3 + 3x2 + 9x + 27; remainder 0 B. x3 - 3x2 + 9x - 27; remainder 162 C. x3 + 3x2 + 9x + 27; remainder 81 D. x3 + 3x2 + 9x + 27; remainder 162
Mathematics
Solve the equation.
?
?
A. x = 3 B. x = 2.25 C. x = 9 D. x = 4.5 E. x = 1.125
Mathematics