If donna traveled 2,100 miles in 7 hours on her train ride through europe, how fast was the train traveling?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay

Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias