Find the magnitude and direction angle for the following vector. Give the direction angle as an angle in [0°, 360°) rounded to the nearest tenth.
A. , 189.5°
B. , 9.5°
C. , 260.5°
D. , 80.5°
Answer: D
Mathematics
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Is the ordered pair a solution of the given system of equations?(5, -2),
A. Yes B. No
Mathematics
Solve the problem.The height s of a ball (in feet) thrown with an initial velocity of 80 feet per second from an initial height of 4 feet is given as a function of time t (in seconds) by What is the maximum height? Round to the nearest hundredth, if necessary.
A. 100.25 ft B. -74.75 ft C. 104 ft D. 116.5 ft
Mathematics
Add or subtract as indicated.-4.949 - 4.717
A. 9.666 B. 23.344 C. 0.232 D. -9.666
Mathematics
Choose the equivalent expression for the given expression.sin2x
A. cos2x - 1 B. 1 - cos2x C. 1 + cos2x D. 1 - csc2x
Mathematics