You are conducting a survey on the best beaches in the world. The group that would probably give you the most reliable data is
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Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?