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
determine by the number of times the barnacle using the cos theorem. number of meters of the 20 m trip by plotting the points on a graph

-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 pie meters (one half the circumference of the wheel) before the barnacle comes back up, so the barnacle covers 3 pie meters underwater between x = 0 and x = 20.

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.

it is true

step-by-step explanation:

all the combinations add up i used   calculator

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

2425

step-by-step explanation: