Solve by any method. If there is not one solution to a system, state why.
x + 
y = -1 x - y = -1
A. (3, -1)
B. (-4, -1)
C. (-3, -2)
D. (-4, -2)
Answer: C
Mathematics
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Solve the equation on the interval 0 ? ? < 2?.cos ? + sin ? = 0
A. 
B. 
C. {
}
D. {
}
Mathematics
Solve the equation on the interval [0, 2?).sin2 x + sin x = 0
A. 0, ?, 
, 
B. 0, ?, 
C. 0, ?, 
, 
D. 0, ?, 
, 
Mathematics
Find the probability.At the Stop 'n Go tune-up and brake shop, the manager has found that an SUV will require a tune-up with a probability of 0.6, a brake job with a probability of 0.1 and both with a probability of 0.02. What is the probability that an SUV requires either a tune-up or a brake job?
A. 0.7 B. 0.58 C. 0.68 D. 0.32
Mathematics
Find the indicated sum.Find the sum of the first 55 terms of the arithmetic sequence: 2, 4, 6, 8, . . .
A. 112 B. 3135 C. 3080 D. 3086
Mathematics