Solve the system of equations by substitution.
A. x = 7, y = 12; (7, 12)
B. x = 3, y = 7; (3, 7)
C. x = 12, y = -2; (12, -2)
D. x = -2, y = 3; (-2, 3)
Answer: C
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Factor by grouping.20p2q - 105pq2 + 100q3
A. 5(4p - 5q)(p - 4q2) B. q(20p - 25q)(p - 4q) C. 5q(4p - 4q)(p - 5q) D. 5q(4p - 5q)(p - 4q)
Find the measures of the seven remaining angles, given that p
q and that t is a transversal.
A. m?2 = m?4 = m?8 = 120°; m?1 = m?3 = m?5 = m?7 = 60° B. m?2 = m?4 = m?8 = 120°; m?1 = m?3 = m?5 = m?7 = 70° C. m?5 = m?7 = m?8 = 120°; m?1 = m?2 = m?3 = m?4 = 60° D. m?2 = m?4 = m?8 = 120°; m?1 = m?3 = m?5 = m?7 = 30°
Decide whether or not the set is closed under multiplication.{0, 1}
A. Closed B. Not closed
Round the number to the place indicated.Round to the nearest thousandth: 5.04406
A. 5.045 B. 5.043 C. 5.044 D. 5.0441