Find the measure of the unknown angle in the pair of supplementary angles.Find the measure of ?a if the measure of ?b = 20°.
A. 200°
B. 160°
C. 20°
D. 9°
Answer: B
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Solve the problem.A constant force F = 28i + 34j moves an object from the point P = (9, 8) to the point Q = (4, 36), where units are in pounds and feet. Find the work done.
A. -20 ft-lb B. 812 ft-lb C. 20 ft-lb D. 530.4 ft-lb
Solve the problem.Sue buys a house which has a rectangular yard measuring 15.4 meters by 15.3 meters. In one corner of the yard is a rectangular shed measuring 3.2 meters by 3.9 meters. Sue intends to grow grass in the whole of the yard. What is the area of the yard excluding the shed?
A. 235.62 m2 B. 223.14 m2 C. 3.2 m2 D. 2231.4 m2
Solve using Cramer's rule. 5x - 7y - z = -28 x - 9y + 5z = -12-4x + y + z = -8
A. (6, -7, -9) B. (6, 7, 9) C. (7, 9, 7) D. (7, 5, 9)
Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.6x8
A. Monomial; variable x; coefficient 8; degree 0 B. Monomial; variable x; coefficient 8; degree 6 C. Monomial; variable x; coefficient 6; degree 8 D. Not a monomial