Simplify the expression using the order of operations.
+ 16
A. -13
B. -19
C. 13
D. 19
Answer: D
Mathematics
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Solve the problem.Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students surveyed own no cats?
A. 27 B. 15 C. 10 D. 22
Mathematics
Simplify the expression. The result will be one of sin x, cos x, tan x, cot x, sec x, csc x.
A. tan x B. sin x C. cos x D. sec x
Mathematics
Write as a decimal.388%
A. 38.8 B. 3.88 C. 3.89 D. 0.388
Mathematics
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-2 รท 
A. 4
B. - 
C. - 4
D. 
Mathematics