Solve the problem.Two trains leave a train station at the same time. One travels east at 12 miles per hour. The other train travels west at 10 miles per hour. In how many hours will the two trains be 61.6 miles apart?
A. 5.6 hours
B. 1.4 hours
C. 2.8 hours
D. 3.3 hours
Answer: C
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Write the quadratic equation in standard form. Determine the values of a, b, and c.x2 + 4x + 2 = 0
A. x2 + 4x = -2 a = 1, b = 4, c = -2 B. x2 + 2 = -4x a = 1, b = -4, c = 2 C. x2 = -4x - 2 a = 1, b = -4, c = -2 D. x2 + 4x + 2 = 0 a = 1, b = 4, c = 2
Find the mistake, then find the correct answer.Solve for x: x2 + 9 = 73line 1 x2 + 9 = 73line 2 
line 3 x2 = 64line 4 
= 
line 5 x = 8
What will be an ideal response?
Solve the system by the substitution method.
A. (7, 3), (3, 7), (21, 1), (1, 21) B. (7, 3), (3, 7) C. (7, 3), (-7, -3), (3, 7), (-3, -7) D. (7, 3), (-7, -3)
Find the surface area of the solid figure.Use 3.14 for ?. Round to the nearest hundredth.
A. 1519.76 m2 B. 506.59 m2 C. 5572.45 m2 D. 379.94 m2