Find the angle between v and w. Round your answer to one decimal place, if necessary.v = -5i + 7j,
w = -6i - 4j
A. 90.9°
B. 20.7°
C. 88.2°
D. 110.8°
Answer: C
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Perform the operation indicated. Simplify.
- 
A. 
B. 
C. 
D. 
Use dimensional analysis to convert the units. If necessary, round to the nearest tenth. 36 ft = 
yd
A. 1296 B. 108 C. 4.00 D. 12
Solve using a system of two equations in two unknowns.A retired couple has $150,000 to invest to obtain annual income. They want some of it invested in safe Certificates of Deposit yielding 6%. The rest they want to invest in AA bonds yielding 12% per year. How much should they invest in each to realize exactly $15,000 per year?
A. $100,000 at 6% and $50,000 at 12% B. $100,000 at 12% and $50,000 at 6% C. $110,000 at 12% and $40,000 at 6% D. $90,000 at 6% and $60,000 at 12%
Solve the inequality and write the solution set using interval notation; then graph the solution set on a number line. v2 + 2v - 24 ? 0
A. (-?, -6] ? [4, ?)
B. (-?, -6]
C. [-6, 4]
D. [4, ?)