Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the velocity for the specific value of t.x = 2t + 5, y = 4t - 2, t = 7
A. 4.47, 63.4°
B. 32.20, 63.4°
C. 4.47, 243.4°
D. 32.20, 243.4°
Answer: A
Mathematics
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1 ÄÄÄÄÄÄÄÄÄÄÄ (6.8 ð 103) a. 6.8 ð 103 b. 1.47 ð 104 c. 1.47 ð 10-4 d. 1.47 ð 10-5 e. 6.8 ð 10-3
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Perform the indicated operations and express the result in simplest form.
A. 
B. 
C. 3
D. 5
Mathematics
Determine the phase shift of the function.y = -5 sin 
A. - 
B. 
C. 
D. ?
Mathematics
Solve the problem.A rectangular enclosure must have an area of at least 2800 yd2. If 220 yd of fencing is to be used, and the width cannot exceed the length, within what limits must the width of the enclosure lie?
A. 40 ? w ? 55 B. 0 ? w ? 40 C. 55 ? w ? 70 D. 40 ? w ? 70
Mathematics