Question Help An observation deck extends 457 feet out above a valley. The deck sits 407 feet above the valley floor. If an object is dropped from the observation deck, its heighth
in feet, after t seconds, is given by h = -1662 +407. How long will it take for the object to be 7 feet above the valley floor?
It will take seconds for the object to be 7 feet above the valley floor.
(Type an integer or a decimal.)

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

What is the solution of log2  (3x  -  7)  =  3? 4 5

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem