Solve using the problem-solving strategy for systems of linear equations.The three angles in a triangle always add up to 180°. If one angle in a triangle is 72° and the second is 5 times the third, what are the three angles?
A. 72°, 89°, 19°
B. 72°, 91°, 17°
C. 72°, 88°, 20°
D. 72°, 90°, 18°
Answer: D
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Factor completely. If the polynomial is prime, so state.16y2 + 72y - 40
A. 8(2y + 1)(y - 5) B. 8(2y - 1)(y + 5) C. (16y - 8)(y + 5) D. prime
Write the answer to the problem as an algebraic expression.A theater ticket for adults is a dollars and the price of a child's ticket is c dollars. If 13 adults and 40 children attend the theater one night, how much money did the theater make?
A. 13a + 40c dollars B. 40a + 13c dollars C. 520ac dollars D. 13c + ca dollars
Factor the GCF from the polynomial.m2(n - 13) - p(n - 13)
A. (m2n - 13m2) - (pn - 13p) B. m2(n - 13) C. (n - 13)(m2 - p) D. (n - 13)(m2 + p)
Solve the system. 7x + 4y - z = 64 x - 3y - 8z = -13 9x + y + z = 68
A. ? B. {(7, 4, 1)} C. {(-7, 4, 14)} D. {(7, 1, 4)}