Solve the problem.How many four-digit codes can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 if the last digit cannot be 0 or 1 or 2 and repetition of digits is allowed?
A. 720
B. 7200
C. 700
D. 7000
E. none of these
Answer: D
Mathematics
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Graph the expression on each side of the equals symbol to determine whether the equation might be an identity.cot x cos x + sin x = csc x
A. Not an Identity B. Identity
Mathematics
Use the formula for the nth term of a geometric sequence to find the indicated term of the sequence with the given first term, a, and common ratio, r.Find a12 when a = 4, r = 2.
A. 8192 B. 16,384 C. 26 D. 8196
Mathematics
The graph of a quadratic function is given. Determine the function's equation.
A. g(x) = (x + 2)2 - 2 B. j(x) = (x - 2)2 - 2 C. f(x) = (x + 2)2 + 2 D. h(x) = (x - 2)2 + 2
Mathematics
Perform the row operations on the matrix and write the resulting matrix.Replace R2 by 
R1 + 
R2
A. 
B. 
C. 
D. 
Mathematics