Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.3x2 + 12x = -2
A. ? -0.087,
? -1.913
B. ? -2.174,
? -1.913
C. ? 0.160,
? -4.160
D. ? -0.174,
? -3.826
Answer: D
Mathematics
You might also like to view...
Solve.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 80 mph B. 40 mph C. 50 mph D. 20 mph
Mathematics
Solve the quadratic inequality. Write the solution set in interval notation.x2 - 3x - 28 ? 0
A. (-?, -4] ? [7, ?) B. [7, ?) C. (-?, -4] D. [-4, 7]
Mathematics
Find the product.(n + 8)2
A. 64n2 + 16n + 64 B. n2 + 64 C. n2 + 16n + 64 D. n + 64
Mathematics
Solve the problem.If u = 4i - 2j and v = 12i + 7j, find u - v.
A. -8i - 9j B. 16i + 5j C. -10i + 5j D. -9i + 5j
Mathematics