Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 6i + 4j, w = 2i - 5j
A. 101.9°
B. 70.8°
C. 145.5°
D. 55.5°
Answer: A
Mathematics
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Provide an appropriate response.Use the fact that tan-1 x = 
for |x| < 1 to find the series for cot-1 x.
A. 
- 
B. 
C. 
D. 
- 
Mathematics
Find the first four nonzero terms in the Maclaurin series for the function.f(x) = ln (1 + x3)
A. 
x3 - 
x6 + 
x9 - 
x12 + . . .
B. x3 - 
x6 + 
x9 - 
x12 + . . .
C. x3 - 
x6 + 
x9 - 
x12 + . . .
D. x3 + 
x6 - 
x9 + 
x12 + . . .
Mathematics
Solve.Find the diameter of a water pipe that has the same area as five pipes, one with a 4-in. diameter, two with 3-in. diameters, and two with 2.5-in diameters. Round to the nearest hundredth.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the problem.Subtract (-20a4 + 16a2) from (7a4 - 3a2).
A. -13a4 + 13a2 B. 27a4 - 19a2 C. 8a6 D. 27a4 + 13a2
Mathematics