Solve the problem.A 5.1-foot fence is 13.081 feet away from a plant in the direction of the sun. It is observed that the shadow of the fence extends exactly to the bottom of the plant. (See drawing) Find ?, the angle of elevation of the sun at that time. Round the measure of the angle to the nearest tenth of a degree.
A. ? = 21.5°
B. ? = 21.1°
C. ? = 21.3°
D. ? = 22.7°
Answer: C
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A. -5x + 3 B. 5x + 12 - 9 C. 5x + 3 D. 19x + 21
Multiply.0.495 × 10
A. 49.5 B. 0.0495 C. 4.95 D. 0.00495
Without graphing, answer the following questions for the linear system.(i) Is the system inconsistent, are the equations dependent, or neither?(ii) Is the graph a pair of intersecting lines, a pair of parallel lines, or one line?(iii) Does the system have one solution, no solution, or an infinite number of solutions? x - 3y = 63y + 1 = x
A. (i) neither (ii) intersecting lines (iii) one solution B. (i) inconsistent (ii) parallel lines (iii) no solution C. (i) dependent (ii) one line (iii) infinite number of solutions
Factor completely, or state that the polynomial is prime.2x2 - 16xy + 30y2
A. 2(x - 5y)(x - 3y) B. prime C. 2(x - 5)(x - 3) D. 2(x + 5y)(x + 3y)