Find an equation of variation for the given situation. s varies directly as the square of t, and s = 64 when t = 4.
A. s = 4t2
B. s = 
t2
C. s = 16t2
D. s = 
t2
Answer: A
Mathematics
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A pair of similar triangles is given. Write the corresponding angles and the ratios of the corresponding sides.
A. ?L ? ?L
?M ? ?P
?N ? ?Q
= 
= 
B. ?L ? ?L
?M ? ?Q
?N ? ?P
= 
= 
C. ?L ? ?L
?M ? ?P
?N ? ?Q
= 
= 
D. ?L ? ?L
?M ? ?Q
?N ? ?P
= 
= 
Mathematics
Collect like terms.
x + 
y - 
x - 
y + 20
A. 2x + 
y + 20
B. 
x + 
y + 20
C. 2x + 
y + 20
D. 2x + 
y + 20
Mathematics
Solve the equation.92x ? 27(3 - x) = 
A. {-8}
B. 
C. {10}
D. {-11}
Mathematics
Find the eccentricity of the ellipse.47x2 + y2 = 47
A. 
B. 
C. 
D. 
Mathematics