Jake uses a 10 meter ladder to climb to the top of the building. The bottom end of a ladder is set 5 meters from a building and the other end is leaned against the building. The top end of the ladder touches the building 1 meter below the top of this building. How tall is the building? (Round to the tenths place.) 7.2 meters
8.7 meters
9.7 meters
10.7 meters​

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