Awaterfall has a height of 1900 feet. a pebble is thrown upward from the top of the falls with an initial velocity of 16 feet per second. the height of the pebble h in feet after t seconds is given by the equation h equals negative 16 t squared plus 16 t plus 1900. how long after the pebble is thrown will it hit the ground?

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?