Find the angle between the given vectors to the nearest tenth of a degree.v = 2i, w = j
A. 0°
B. 90°
C. 270°
D. 180°
Answer: B
You might also like to view...
The graphs show the position s, velocity v = ds/dt, and acceleration a = d2s/dt2 of a body moving along a coordinate line as functions of time t. Which graph is which?
A. B = position, A = velocity, C = acceleration B. C = position, A = velocity, B = acceleration C. A = position, C = velocity, B = acceleration D. A = position, B = velocity, C = acceleration
Provide an appropriate response.A baseball is hit when it is 3.1 feet above the ground. It leaves the bat with an initial speed of 150 ft/sec, making an angle of 24° with the horizontal. Assuming a drag coefficient 
find the range and the flight time of the ball. For projectiles with linear drag: x = x0 + 
(1 - e-kt)cos ?, y = y0 + 
(1 - e-kt)sin ? + 
/>(1 - kt - e-kt)where k is the drag coefficient, v0 and ? are the projectile's initial speed and launch angle, and g is the acceleration of gravity (32 ft/sec2). A. Flight time = 3.97 sec; range = 424.4 feet B. Flight time = 3.74 sec; range = 413.5 feet C. Flight time = 2.82 sec; range = 393.5 feet D. Flight time = 3.62 sec; range = 402.2 feet
Find the mode(s) for the given sample data. Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mode(s).56?61?5951?54?6268?5850
A. 57.7 B. 56, 61, 59, 51, 54, 62, 68, 58, 50 C. No mode D. 58
Evaluate the expression, given x = -2, y = 3, and a = -4.(-4a)(6x + 2y)
A. 224 B. -96 C. 288 D. 96