Solve.If y varies directly as the square of x, and y = 20 when x = 5, find y when x = 15.
A. 
B. 60
C. 180
D. 
Answer: C
Mathematics
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Find the perimeter. Use 3.14 for ?.
A. 24.56 m B. 36.56 m C. 28.56 m D. 41.12 m
Mathematics
Provide an appropriate response.Prove that 
dt = k 
dt for any scalar constant k.
What will be an ideal response?
Mathematics
Solve the problem.Which of the lines in the picture are lines of symmetry of the given figure?
A. l and n B. m and o C. Only l D. l, m, n, and o
Mathematics
Find the asymptotes of the hyperbola.25y2 - 16x2 = 400
A. y = 
x and y = - 
x
B. y = 
x and y = - 
x
C. y = 
x and y = - 
x
D. y = 
x and y = - 
x
Mathematics