Find the standard form of the equation of the ellipse satisfying the given conditions.Center at (0, 0); Focus at (0, 6); Vertex at (0, 7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: B
Mathematics
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Solve.There are currently 63 million cars in a certain country, decreasing by 2.8% annually. How many years will it take for this country to have 41 million cars? Round to the nearest year.
A. 3 yr B. 8 yr C. 110 yr D. 15 yr
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Write the expression in exponent form.-2(x)(x)(x)(x)
A. -(2x)4 B. (-2x)4 C. -2x4 D. -2(4x)
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Graph the equation.3x + 4y = 24
A. 
B. 
C. 
D. 
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Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
A. 
? 4.243
B. 
? 12.806
C. 164
D. 
= 82.0
Mathematics