Write the expression in the form bi, where b is a real number.
A. -5
B. 5i
C. 5
D. -5i
Answer: B
Mathematics
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Find the probability.A child rolls a 6-sided die 6 times. What is the probability of the child rolling exactly two fours? Round to the nearest ten-thousandth.
A. 0.5681 B. 0.0621 C. 0.7182 D. 0.2009
Mathematics
Find the square root. Express the answer as a whole number or as a square root. Do not use a calculator.
A. 42 B. 16 C. 30 D. 6
Mathematics
Solve the problem.Suppose that $2200 is invested at 3% interest, compounded semiannually. Find the function for the amount of money after t years.
A. A = 2200 (1.03)2t B. A = 2200 (1.015)t C. A = 2200 (1.0125)2t D. A = 2200 (1.015)2t
Mathematics
Graph the inequality.y < 
x
A. 
B. 
C. 
D. 
Mathematics