Match the given equation with one of the graphs.49x2 + 25y2 = 1225
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the parabola described.Vertex at (0, 0); axis of symmetry the x-axis; containing the point (1, 3)
A. x2 = 9y
B. x2 = 
y
C. y2 = 
x
D. y2 = 9x
Mathematics
Write as the sum and/or difference of logarithms. Express powers as factors.ln 
, x > 9
A. ln 6 + ln x + 
ln (1 + 3x) - 7ln (x - 9)
B. 6ln x + 
ln (1 + 3x) - 7ln (x - 9)
C. ln 6 + ln x - 9ln (1 + 3x) - 7ln (x - 9)
D. ln 6 + ln x + 
ln (1 + 3x) - ln 7 - ln (x - 9)
Mathematics
Determine whether or not the number is written in scientific notation.0.21 × 1013
A. in scientific notation B. not in scientific notation
Mathematics