Evaluate the expression.(-7)2
A. -14
B. -49
C. 14
D. 49
Answer: D
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Perform the matrix operation.Given A = 
and B = 
, find AB.
A. 
B. 
C. 
D. 
Simplify the expression. All exponents should be positive integers.
-1
A. 
B. 
C. 
D. 
Provide an appropriate response.Determine which technique would be the best initial step to verify each of the four identities below. Each of the identities involves a different technique as the initial step. 
= 
1 - 
= cos2 ? 
= 2 cot ? - 5 csc2 ? + tan2 ? - cot2 ? = sec2 ?Which of the following is not one of the four techniques required? I. Rewrite the
expression in terms of sines and cosines. II. Multiply the numerator and denominator of a quotient by the conjugate of the denominator. III. Use a Pythagorean identity. IV. Separate a quotient into one or more quotients. V. Use factoring techniques. A. technique V B. technique II C. technique III D. technique IV
Write the standard equation for the following circle.
A. (x + 2)2 + (y - 2)2 = 9 B. (x - 2)2 + (y + 2)2 = 9 C. (x - 2)2 + (y + 2)2 = 3 D. (x + 2)2 + (y - 2)2 = 3