Which equations represent hyperbolas? a) 2x2 + 16x + 2y2 + 14y − 9 = 0 b) 2x2 + 4x − 5y2 − 10y + 57 = 0 c) -x2 + 5x − 7y2 + 2y − 81 = 0 d) x − 2y2 + 4y + 15 = 0 e ) -x2 + 12x + 3y2 + 7y + 11 = 0

Which expression is equivalent to 5r674 pression is equivalent to see lo 5r614) 4r322,4 ) 5 ( 2 5t5 |

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.