Evaluate the expression according to the order of operations.80 - 2 ? 4 ? 6
A. 432
B. 68
C. 32
D. 1872
Answer: C
Mathematics
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Decide whether or not the given equation is an identity.2 cos4 x - 3 cos2 x + 1 = sin2 x(2 cos2 x - 1)
A. Yes B. No
Mathematics
Identify the sequence as arithmetic, geometric, or neither.an = 3n
A. Neither B. Arithmetic C. Geometric
Mathematics
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Mathematics
Determine whether the ordered pair is a solution for the given equation.-19x - 11y = -27; (2, -1)
A. Yes B. No
Mathematics