Alandscaper had t tons of rock to build a decorative wakls. he used 1/4 ton for each wall. how many decorative walls did he build

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?