Help math probs?

9:A fire fighter needs to estimate the height of a burning building. She estimates the length of her shadow to be 8 1/2 feet long and the length of the building's shadow to be 51 feet long. Find the height of the building if the fire fighter is 5 2/3 feet tall.

16:On an architect's blueprint, 1 inch corresponds to 12 feet. Find the length of a wall represented by a line 8 1/4 inches long on the blueprint. Round to the nearest tenth if necessary.

17:The scale on a map states that 1 centimeter corresponds to 50 kilometers. On the map, two cities are 0.9 cm apart. Find the actual distance.

18:It is recommended that there be at least 7 square feet of work space for every person in a conference room. A certain conference room is 20' by 12'. Find the maximum number of people the room can accommodate.

16.. 99 ft

18. 240 sq ft divided by 7 is the answer

Y r u trying to get the answers on the internet??? if this is your homework,
SHAME ON U!!!! CHEATER!!!!!!!
okay, i'm sorry. but if you really need help with this, u should ask someone for help, not get the answers off the internet...

10 8 6 3

what are you in school for?solve your own problems using what was taught to you..shame on your assss

9: 51/8.5 = 6
Treat '6' as a constant of proportionality between the woman's height and the building's height.
5.66 feet (5 2/3) x 6 = 33.96 feet

16: 1 inch = 12 feet
12 inch x 8 = 96 feet
add 1/4 of a foot (3 feet)