Solve the problem.Find the measures of the supplementary angles.
A. 101.25° and 78.75°
B. 96.25° and 83.75°
C. 50.63° and 39.38°
D. 202.5° and 157.5°
Answer: A
Mathematics
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for ?. 
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Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
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Find the probability.Samantha is taking courses in math and English. The probability of passing math is estimated at 0.4 and English at 0.6. She also estimates that the probability of passing at least one of them is 0.8. What is her probability of passing both courses?
A. 0.12 B. 0.8 C. 0.2 D. 0
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Solve the equation. The letters a, b, and c are constants.
+ 
= c, c ? 0
A. x = 
B. x = 
C. x = 
D. x = 
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