Find the area of the circle. Use 3.14 or 
for ? as indicated.Use 3.14 for ?.
A. 1133.54 in2
B. 4534.16 in2
C. 119.32 in2
D. 238.64 in2
Answer: A
Mathematics
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Find dy/dx without eliminating the parameter.x = 4 cos t, y = 6 cos(2t)
A. 6 sin t
B. 6 sin t cos t
C. 
D. 6 cos t
Mathematics
Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.
A. Monomial; variable x; coefficient 19; degree 0 B. Monomial; variable x; coefficient 19; degree 1 C. Monomial; variable x; coefficient 19; degree -1 D. Not a monomial
Mathematics
The slope of any horizontal line is
(a) undefined. (b) positive. (c) negative. (d) -1. (e) zero.
Mathematics
Find x.
A) 25°
B) 22°
C) 20°
D) 17°
E) 27°
Mathematics