Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log2
A. 
log2
B. 5log2y
C. 
log5y
D. 
log2y
Answer: D
Mathematics
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Given matrix A, find the indicated cofactor.Find A21.A = 
A. -11 B. 11 C. 2 D. -2
Mathematics
Write the decimal in numbers.Eight and seventeen hundredths
A. 8.017 B. 817 C. 8.0017 D. 8.17
Mathematics
Write the expression in the standard form a + bi.(1 + i)20
A. 1024 B. -1024 C. 1024i D. -1024i
Mathematics
Solve the problem.A thermometer reading 10°C is brought into a room with a constant temperature of 25°C. If the thermometer reads 16°C after 5 minutes, what will it read after being in the room for 10 minutes? Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to two decimal places.)
A. 19.6°C B. 30.4°C C. 24.91°C D. 4.42°C
Mathematics