The stage manager of a school play creates a rectangular acting area of 42 square yards. string lights will outline the acting area. to the nearest whole number, how many yards of string lights does the manager need to enclose this area? om guys

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Aline passes through 3,7 and 6,9 what equation represents the line

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?