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What is the equation of an ellipse with a vertex at (0, -5) and co-vertex at (4, 0)? I need an answer ASAP! Thanks!? I want to transfer my ward from vkv Kolkata to vkv Kerala due to non availability of boys hostel at Kolkata? Two numbers, a and b, are such that a>b. Their sum is 49. Write an equation to represent this information. Would it still be a+b=49? Pre-Calculus Help? Storm Tracker worksheet help? How can I use this formula to solve this type of problem?