Ehhh what is 2+2+9+9+0+2x0+2 dvided by 8 and 234898529 x 2340 i need a full explanation

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.

Three coins are flipped. what is the probability that there will be at least two tails?

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)