Solve. Find the perimeter of the given figure.
(-x + 6 ) meters
(2x - 1) meters
x2 meters
x meters
(x2 - 9x - 9) meters
Egle
2x2 - 5x - 4 m
FARBETE
SELE
2x2 + 13x + 14 m
2x2 - 7x - 4 m
-x2 - 7x - 4 m

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?