Write the expression with only positive exponents. Assume all variables represent nonzero numbers. Simplify if necessary.(-a)-16
A. 
B. 16a
C. 
D. 
Answer: C
Mathematics
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Express the number in scientific notation.2500
A. 2.5 × 10-2 B. 2.5 × 10-3 C. 2.5 × 103 D. 2.5 × 102
Mathematics
Find all real-number solutions. Round your answer to the second decimal place, if necessary. b3 = 8
A. ±2.67 B. ±2 C. 2.67 D. 2
Mathematics
Write the ratio as a fraction in lowest terms. Be sure to make all necessary conversions.3
days to 5
weeks
A. 
B. 
C. 
D. 
Mathematics
Determine whether the argument is valid or invalid. If valid, name the type of reasoning and if invalid, determine the error in reasoning. ? No students are enthusiastic. You are a student. Therefore, you are not enthusiastic.
What will be an ideal response?
Mathematics