Solve the problem.How many different 4-letter radio-station call letters can be made if the first letter must be K or W, repeated letters are allowed, but the call letters cannot end in an O?
A. 16,900
B. 456,976
C. 33,800
D. 35,152
Answer: C
Mathematics
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Use the protractor to find the measure of ?GQC.
?
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Write the result using positive exponents only.(-5x4y-5)(3x-1y)
A. 
B. 
C. -15x3y6
D. 
Mathematics
Solve the problem.Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is P = P0 e-0.0244t. How long will it take for 15 grams of strontium to decay to 5 grams? Round answer to 2 decimal places.
A. 40.50 years B. 450.25 years C. 4.50 years D. 45.03 years.
Mathematics
Divide.
A. 7.090323 B. 0.7090323 C. 709,032.3 D. 70.90323
Mathematics