From the set of equations p 5 3q pr 5 qs 1 2pr 2 1 1 2qs 2 5 1 2qt 2 involving the unknowns p, q, r, s, and t, find the value of the ratio of t to r

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

The graph of a quadratic function has a maximum at point (0, 5). the graph contains the point (2, 1). what is another point on the graph?