Ad←→ is tangent to circle m at point d. the measure of ∠dmq is 50º.

what is the measure of ∠dqm?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?

Prove that 16^4-2^13-4^5 is divisible by 11.