Classify the angle as acute, right, obtuse, or straight.
A. obtuse
B. straight
C. right
D. acute
Answer: B
Mathematics
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Solve the equation.a + 4 = 7
A. -3 B. -11 C. 3 D. 11
Mathematics
Subtract. Simplify, if possible.
- 
A. 13
B. 1
C. 1
D. 6
Mathematics
Solve the combined inequality and graph the solution set. Write the solution in interval notation.11 ? 
x + 4 < 25
A. [2, 6)
B. [2, 3)
C. (2, 6]
D. (2, 3]
Mathematics
Solve the problem.The psychology lab at a college is staffed by 9 male doctoral students, 8 female doctoral students, 16 male undergraduates, and 6 female undergraduates. If a person is selected at random from the group, find the probability that the selected person is an undergraduate or a female.
A. 
B. 
C. 
D. 
Mathematics