SPORTS The strength coach wants to determine whether a new workout routine will result in faster times in the 100-meter dash. He randomly selects 20 athletes and implements the new routine for 3 months. Then he compares their progress with the rest of the athletes. Identify the experiment as biased or unbiased. If biased, explain your reasoning.

Multiply. −2x(6 x 4 −7 x 2 +x−5) express the answer in standard form. enter your answer in the box.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Factor and solve to find roots x squared -x - 90 =0