What is the area of this triangle, in square feet?

[a]4.42 ft2

[b]8.84 ft2

[b]636.48 ft2

[d]53.04 ft2

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

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.

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?