Graph y = sin(x) on the graphing calculator. use the graph to determine the height of the barnacle with respect to water level as the boat has traveled the given distance.

explain how to determine the following from the graph: number of times the barnacle went beneath the water level if the boat traveled a distance of 20 m number of meters of the 20 m trip that the barnacle was underwater

The sample answer on edg. is:

+When the graph is below the x-axis, the barnacle is underwater.

+The graph dips below the x-axis three times between x = 0 and x = 20, so the barnacle goes underwater three times.

+Every time the barnacle goes underwater, the boat travels pi meters (one half the circumference of the wheel) before the barnacle comes back up, so the barnacle covers 3pi  meters underwater between x = 0 and x = 20

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

215.92 dollars is the answer