(co 3) ten rugby balls are randomly selected from the production line to see if their shape is correct. over time, the company has found that 89.4% of all their rugby balls have the correct shape. if exactly 7 of the 10 have the right shape, should the company stop the production line? no, as the probability of seven having the correct shape is unusual yes, as the probability of seven having the correct shape is unusual yes, as the probability of seven having the correct shape is not unusual no, as the probability of seven having the correct shape is not unusual

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

66.666666667%

step-by-step explanation:

divide 150 by 100

divide 100 by 1.5

there you go!

decreased by 33.333333334%

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.