An unknown number is not equal to 6.45 but rounds to 6.45 when rounded to the nearest hundredth. Which of the following could be the unknown number? 6.454
6.443
6.405
6.045

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

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?