Simplify the expression.
3/2
A. - 
B. 
C. - 
D. 
Answer: B
Mathematics
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Rewrite with positive exponents, and simplify, if possible.7x-6/7z7/8
A. 
B. 
C. 
D. 
Mathematics
Use the pH scale to answer the question.What is the hydrogen ion concentration of a solution with pH 1.5?
A. 3.2 x 10-1 B. 3.2 x 10-4 C. 3.2 x 10-3 D. 3.2 x 10-2
Mathematics
Solve the problem. Round to the nearest tenth if necessary.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 34 questions correct. What was the percent of increase?
A. 36% B. 26.5% C. 64% D. 9%
Mathematics
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = 2, cos ? < 0Find cos 
.
A. 
B. - 
C. -
D. 
Mathematics