Find the product.(-9)(-9)
A. 91
B. -91
C. -81
D. 81
Answer: D
Mathematics
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Solve the problem.The physics department of a college has 7 male professors, 10 female professors, 14 male teaching assistants, and 9 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a teaching assistant or a female.
A. 
B. 
C. 
D. 
Mathematics
Divide.-52 ÷ (-4)
A. 3 B. -3 C. -13 D. 13
Mathematics
Write in scientific notation.0.0000011212
A. 1.1212 × 10-5 B. 1.1212 × 10-7 C. 1.1212 × 10-6 D. 1.1212 × 106
Mathematics
The pie chart below shows the number of pizzas consumed by college students in a typical month. Use the chart to answer the question. 
What percent of college students consume 3 or more pizzas in a typical month?
A. 34% B. 57% C. 98% D. 52%
Mathematics