Use the given vectors u, v, w, and z to draw the indicated vector. 
-2v
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.A triangle drawn on a map has sides of lengths 7.0 cm, 10 cm, and 13 cm. The shortest of the corresponding real-life distances is 126 km. Find the longest of the real-life distances. Round to the nearest unit.
A. 234 km B. 180 km C. 164 km D. 68 km
Mathematics
Find a formula for the nth term of the sequence.2, -2, 2, -2, 2 (2's with alternating signs)
A. an = 2(-1)n+1 B. an = 2(-1)2n-1 C. an = 2(-1)2n+1 D. an = 2(-1)n
Mathematics
Add.3 + -9
A. 
B. 
C. 6
D. 12
Mathematics
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.cos 
A. - 
B. 
C. 
D. - 
Mathematics