Compute the discriminant. Then determine the number and type of solutions for the given equation.4x2 = -2x - 7
A. 116; two unequal real solutions
B. -108; two complex imaginary solutions
C. 0; one real solution
Answer: B
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Add or subtract measurement numbers, rounding to the correct precision.4 in. + 12 in.
A. 14 in. B. 20 in. C. 16 in. D. 18 in.
Find an equation of a parabola satisfying the given conditions.Focus (-4, 1), directrix x = -12
A. (y - 1)2 = 16(x + 4) B. (x - 1)2 = 16(y + 8) C. (x + 4)2 = 16(y - 1) D. (y - 1)2 = 16(x + 8)
Solve the problem.A rotating beacon is located 11 ft from a wall. If the distance from the beacon to the point on the wall where the beacon is aimed is given by a = 11
, where t is in seconds, find a when t = 0.38 seconds. Round your answer to the nearest hundredth.
A. 22.49 feet B. -15.09 feet C. 15.09 feet D. 29.88 feet
Multiply.
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A. 
B. 
C. 
D. 