Find a rectangular equation for the curve and describe the curve.x = 
, y = t; -4 ? t ? 4
A. x = 
; portion of a circle with radius 4
B. x = 
; circle with radius 4
C. y = x2 - 16; portion of a parabola
D. y = -x2 + 16; portion of a parabola
Answer: A
Mathematics
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Find the absolute value.|-21|
A. ± 21 B. 0 C. 21 D. -21
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Simplify.
A. 3x3 - 7x2y2 + 5xy4 B. 13 C. 3x13 - 7x12y4 + 5x11y6 D. 3x3 - 21x7y3 + 15x6y5
Mathematics
Identify a pattern in the sequence of figures. Then use the pattern to find the next figure in the sequence.
A. 
B. 
C. 
D. 
Mathematics
Write a quadratic equation having the given numbers as solutions.-9.3, 5.1
A. x2 + 9.3x - 47.43 = 0 B. x2 + 4.2x - 47.43 = 0 C. x2 - 4.2x - 47.43 = 0 D. x2 - 47.43 = 0
Mathematics