Identify the property illustrated by the statement. Assume all variables represent real numbers.4 + (-4) = 0
A. Associative
B. Closure
C. Identity
D. Inverse
Answer: D
Mathematics
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Solve the problem.To get credit for graduation, Brittany completed 20 hours of community service. She worked at a soup kitchen for 
of the time. She picked up litter along highways for 
of the time. The rest of the hours she spent tutoring younger children after school. How much time did Brittany spend tutoring?
A. 5
hours
B. 7
hours
C. 5
hours
D. 6
hours
Mathematics
Find the exact value of y, or state that y is undefined.y = tan-10
A. ?
B. 2?
C. 0
D. 
Mathematics
Sketch the graph of the given equation over the interval [-2?, 2?].y = sin 
A. 
B. 
C. 
D. 
Mathematics
Complete the factorization.10 = 2(
)
A. 6 B. 8 C. 12 D. 5
Mathematics