Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 5i + 8j, w = -3i + 5j
A. 179.0°
B. 92.1°
C. 63.0°
D. 64.0°
Answer: C
Mathematics
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Solve the problem.How many 5-letter passwords can be formed from the letters P, A, Y, M, E, N, T if no repetition of letters is allowed?
A. 42 B. 1260 C. 35 D. 2520
Mathematics
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = x + 1, y = 0, x = -1, x = 7
A. 
?
B. 4?
C. 64?
D. 
?
Mathematics
Determine the slope and the y-intercept and write the equation of the line in slope-intercept form.
A. y = 2x - 4
B. y = 
x + 2
C. y = x - 4
D. y = 2x + 2
Mathematics
y?? + 2y? + y = 6, y (0) = 3, y?(0) = 1
Solve the initial-value problem.
Mathematics