They each have a brother who weighs 40 units. Whose brother weighs 40 pounds, and whose weighs 40 kilograms? Explain your reasoning,

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?