Find the value of X round your answer to the nearest 10th

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.

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

Find the midpoint m of z1=(8+5i) and z2=(12+3i)