Use the rules of exponents to simplify the expression. Use positive exponents to write the answer.
A. 3b2
B. 
C. 4b2
D. 
Answer: A
Mathematics
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Provide an appropriate response.Why can't y = 2x have an x-intercept?
What will be an ideal response?
Mathematics
Solve the equation.-9t = 27
A. -18 B. -3 C. 9 D. 27
Mathematics
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics
Evaluate the function requested. Write your answer as a fraction in lowest terms.
Find sin A.
A. sin A = 
B. sin A = 
C. sin A = 
D. sin A = 
Mathematics