Sketch the surface z = f(x,y).f(x, y) = -x2 - y2
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Factor completely.y2 - 25
A. (y + 5)(y - 5) B. (y - 5)(y - 5) C. (y + 25)(y - 25) D. (y2 + 5)(y2 - 5)
Mathematics
Write the word phrase as an algebraic expression. Use x to represent the unknown number.The product of -5 and the sum of a number and 36
A. -5x + 36 B. -5 + 36x C. -5(x + 36) D. -180x
Mathematics
Perform the indicated operations and simplify the result so there are no quotients.
- 
A. 1 B. 1 - sin ? C. - sec2? D. 0
Mathematics
Translate the phrase to an algebraic expression.Two times x
A. 
B. 2 + x
C. 2 - x
D. 2x
Mathematics