The average weight of a mature human brain is approximately 1400 grams. What is the equivalent weight in pounds? Use the conversion equivalency 1 kilograms (kg) = 1000 grams (g) and 2.20 pounds (lb) = 1 kg. a.
5.11 lb
b.
3.08 lb
c.
636 lb
d.
25.8 lb

Which expression is rational? 6. , square root two, square root 14, square root 49

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?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.