Solve the problem.A velocity ? 0 indicates that the object is traveling upward and a velocity ? 0 indicates that the object is traveling downward. An object is projected upward and v(t) = -9t + 42.3, 0 ? t ? 12. Determine the interval when the object is traveling downward.
A. [4.7, 12]
B. [0, 4.7]
C. [4.7, 9]
D. [3.7, 7.7]
Answer: A
You might also like to view...
Find the expected value for the random variable x having this probability function.
A. 6.3 B. 8 C. 6 D. 7.5
Use the given table for y = ax2 + bx + c to solve ax2 + bx + c < 0 or ax2 + bx + c > 0, as indicated.y = -x2 + 7x - 11.25; ax2 + bx + c > 0
A. x < -4.5 or x > -2.5 B. 2.5 < x < 4.5 C. x < 2.5 or x > 4.5 D. -4.5 < x < -2.5
Graph the ellipse.4x2 + 25y2 = 100
A. 
B. 
C. 
D. 
List all the transformations that must be applied to f(x) = sin x to obtain the graph of g(x).g(x) = -3 sin 
- 7
A. The graph f(x) = sin (x) is shifted a distance of ?/8 to the right, reflected in the x-axis, translated 7 units downward, then stretched vertically by a factor of 3. B. The graph f(x) = sin (x) is shifted a distance of ?/8 to the left, reflected in the y-axis, translated 7 units upward, then stretched vertically by a factor of 3. C. The graph f(x) = sin (x) is shifted a distance of ?/8 to the left, reflected in the x-axis, translated 7 units downward, then stretched vertically by a factor of 3. D. The graph f(x) = sin (x) is shifted a distance of ?/8 to the left, reflected in the y-axis, translated 7 units downward, then stretched horizontally by a factor of 3.