Write the word phrase as an algebraic expression. Use x to represent the unknown number.12 less than a number
A. 
B. x - 12
C. x + 12
D. 12 - x
Answer: B
Mathematics
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Determine whether the equation is linear in x.9x + 44 = 4(x - 8) - x
A. Yes B. No
Mathematics
Identify the triangle PQR as isosceles, equilateral, or scalene.P(14, -14), Q(-14, 14), R(-14
, -14
)
A. Equilateral B. Scalene C. Isosceles
Mathematics
Find the indicated set.Let A = {2, 7, 9, 12, 15}, B = {3, 9, 11, 15, 20}, and C = {4, 8, 9, 10, 12, 14}.Find 
A. {9, 12, 15} B. {9} C. {9, 12} D. {2, 3, 4, 7, 8, 9, 10, 11, 12, 14, 15, 20}
Mathematics
Find the angle ? between the given vectors to the nearest tenth of a degree.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics