Factor the trinomial, or state that the trinomial is prime.x2 + 3xy - 28y2
A. (x - 7y)(x + y)
B. (x - 7y)(x + 4y)
C. (x + 7y)(x - 4y)
D. (x - y)(x + 4y)
Answer: C
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What property of multiplication is illustrated in the diagram below?
A. Multiplication-by-zero property B. Associative property C. Multiplicative-identity property D. Commutative property
Solve the following system by any appropriate method. If there is no real number solution, so state.6x2 + 12y2 = 108y = x + 3
A. (0, 3), (4, 7) B. (0, 3), (- 4, - 1) C. (0, -3), (- 4, - 1) D. (0, -3), (4, 7)
Solve the equation.(k - 2)2/3 + 4(k - 2)1/3 + 3 = 0
A. {25, 1} B. {25, 0} C. {-1, 1} D. {-25, 1}
Solve.According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 27 volts are applied, the current is 5 amperes. What is the current when 23 volts are applied?
A. 124.2 amperes B. 55 amperes C. 4.26 amperes D. 5.4 amperes