Solve the problem.The grade resistance F of a car traveling up or down a hill is modeled by the equation F = W sin ?, where W is the weight of the car and ? is the angle of the hill's grade (? > 0 for uphill travel, ? < 0 for downhill travel). What is the grade resistance (to the nearest pound) of a 1750-lb car on a level road (? = 0°)?
A. 0 lb
B. undefined
C. 1750 lb
D. -1750 lb
Answer: A
Mathematics
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Convert to percent.
A. 8% B. 80% C. 40% D. 1,000%
Mathematics
Solve the triangle, if possible. Approximate values to the nearest tenth when appropriate.? = 77.2°, b = 3.81, a = 24.0
A. ? = 39.6°, ? = 64.2°, c = 31.8 B. ? = 37.6°, ? = 64.2°, c = 29.8 C. ? = 38.6°, ? = 64.2°, c = 27.8 D. No solution
Mathematics
Solve the inequality. Graph the solution set and write the solution set in interval notation.
? 0
A. [-9, 1) ? (1, 5]
B. (-?, -9] ? (1, 5]
C. [-9, 1) ? [5, ?)
D. (-?, -9] ? [5, ?)
Mathematics
Find the domain and range of the inverse of the given function.f(x) = (3x - 1)3
A. Domain and range: all real numbers B. Domain: [1, ?); range: [0, ?) C. Domain: [0, ?); range: all real numbers D. Domain: [3, ?); range: [0, ?)
Mathematics