Find the angle between the given vectors. Round to the nearest tenth of a degree, if necessary.u = 6i + 4j, v = 2i - 5j
A. 101.9°
B. 145.5°
C. 55.5°
D. 70.8°
Answer: A
Mathematics
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Find all real and imaginary solutions.x3 - 9x2 + x - 9 = 0
A. {±9, i} B. {-9, ±i} C. {9, ±i} D. {±1, 9}
Mathematics
Solve using the substitution method. Use a graphing calculator to check your answer. x + 2y = 196x + 12y = 114
A. (0, 0) B. (6, 6) C. No solution D. Infinitely many solutions
Mathematics
Find the commission earned or the rate of commission. Round money answers to the nearest cent if necessary.Sales: $414 Commission rate: 2%
A. $8.28 B. $82.80 C. $4.14 D. $12.42
Mathematics
Write an equation for the graph.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics