Water needs to be removed from an underground chamber before work can commence. when the water was at a depth of 3m, five suction pipes were used and emptied the chamber in 4 hours. if the water is now at a depth of 5m (same cross-section), and you want to empty the chamber in 10 hours time, how many pipes need to be used?

Atriangular bandana has an area of 46 square inches. the height of the triangle is 5 3 4 inches. enter and solve an equation to find the length of the base of the triangle. use b to represent the length of the base.

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?