Factor the trinomial.14 + 5x - x2
A. (2 + x)(7 - x)
B. (x - 2)(x + 7)
C. (2 - x)(7 - x)
D. (2 - x)(7 + x)
Answer: A
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Solve the SSA triangle. Indicate whether the given measurements result in no triangle, one triangle, or two triangles. Solve the resulting triangle. Round the answer to the nearest tenth.B = 32°, b = 4, a = 27
A. A = 28°, C = 119°, c = 28 B. A = 31°, C = 118°, c = 32.5 C. A = 30°, C = 117°, c = 31 D. No triangle exists.
Determine whether the two matrices are inverses of each other by computing their product.
and 
A. No B. Yes
Solve the problem.A baseball pitcher throws a baseball with an initial speed of 138 feet per second at an angle of 20° to the horizontal. The ball leaves the pitcher's hand at a height of 4 feet. Find parametric equations that describe the motion of the ball as a function of time. If necessary, round coefficients to the nearest hundredth. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball? If necessary, round these values to the nearest thousandth.
A. x = 129.68t, y = -16t2 + 47.2t + 4 2.863 sec, 1.475 sec, 3.985 feet B. x = 129.68t, y = -16t2 + 47.2t + 4 3.032 sec, 1.475 sec, 38.81 feet C. x = 129.68t, y = -16t2 + 47.2t + 4 5.725 sec, 1.475 sec, 282.48 feet D. x = 129.68t, y = -16t2 + 47.2t + 4 6.065 sec, 1.475 sec, 34.81 feet
Translate the expression into the language of algebra. Use the variable x to represent the number.6 decreased by a number
A. 1 - 6x B. 6x C. x - 6 D. 6 - x