Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Foci at (0, -15), (0, 15); asymptotes: y = 
x, y = - 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: B
Mathematics
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Solve the following system of equations. Round your answers to two decimal places.
What will be an ideal response?
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Perform the indicated operation and simplify if possible.
÷ 
A. 
B. 
C. 
D. 
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Use a proportion to solve the problem.The ratio of the lengths of strings that play the notes D and A is 3 to 2. If a string 54 centimeters long plays a D, what is the length of the string that plays an A?
A. 57 centimeters B. 36 centimeters C. 56 centimeters D. 81 centimeters
Mathematics
Solve the problem.If $23,200 earned simple interest of $812.00 in 6 months, what was the simple interest rate?
A. 6.2% B. 6% C. 7% D. 7.6%
Mathematics