How do you of liberty is 305 feet tall in nearby building is 4/9 as tall find the height of the building

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.