Fill in the blank with one of the words or phrases listed below.
A letter used to represent a number is called a(n) 
.
A. algebraic expression
B. numerical coefficient
C. like
D. variable
Answer: D
Mathematics
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Determine whether the sets A and B are equal, equivalent, both, or neither.A = {2, 13}B = {21, 3}
A. Equivalent B. Equal C. Neither D. Both
Mathematics
Provide an appropriate response.Suppose that you are solving a system of 4 linear equations and 4 variables by the Gaussian elimination method. If you use the transformation 2R4 + R3, which row(s) of the augmented matrix will change?
A. Rows 4 and 3 B. Row 3 C. Row 4 D. No rows will change.
Mathematics
Simplify.(6a6b5c0)2
A. 0 B. 36a12b10c2 C. 6a12b10 D. 36a12b10
Mathematics
Evaluate the expression. Write your answer without negative exponents.-(100) + (-13)0
A. -2 B. 0 C. -3 D. 1
Mathematics