In a right-angled triangle BCD, the parallel line of the BC hypotenuse passing along the vertex D at right angles and the perpendicular line BC passing through the vertex B intersect at point A. BD = 12 cm BD = 18 cm. Find the length of AD

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

the olimpics is not going to wokk out

step-by-step explanation:

answer is 17

i'll be glad to : )