Find the first four terms of the given sequence tn = n/(n+1).
a. ½, 2/3, ¾, 4/5
b. 1, ½, 1/3, ¼
c. 1, ½, 2/3, ¾
d. 1, 2, 3, 4

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

Can someone me with my math problem pls my teacher is on my back about this