15kg of bronze was made by combining 10/kg of copper which costs $3/kg with 5kg of tin which costs $9/kg. Find the cost per kg of the mixture.

(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Which point has an coordinates of (2,0) ? a