The graph models the height​ h, in​ meters, of a hot air​ balloon, t minutes after beginning to descend. How high was the balloon when it began its​ descent? The balloon was m high when it began its descent.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)