The table represents the height of a rock that is dropped h (t) in meters after t seconds What does the rock hit the ground the rock hits the ground between seconds and second after it is dropped

7x+8y=-18, 4x-9y=-3 solve the system of equations

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

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?