Ramu observed that in order toclimb a 12 meter high wall, he requires either a 13meter or a 20 meter long ladder if he keeps them at distances of x and y respectively from the foot of the wall assume that the ladders just touch the top of the wall what is the value of x + y?

21 meters

Step-by-step explanation:

Step 1 :

Let x be the distance at which the 13 meter ladder is placed . We can consider this as a triangle with one angle as 90°, where the ladder is the hypotenuse and the wall is one side. We need to find the 3rd side  x.

Using Pythagoras theorem, we have

13² = 12² + x² => 169 = 144 + x² => x² = 169-144 = 25

=> x = 5 meters

Step 2 :

Similarly ,

Let y be the distance at which the 20 meter ladder is placed . We can consider this as a triangle with one angle as 90°, where the ladder is the hypotenuse and the wall is one side. We need to find the 3 rd side which is y.

Using Pythagoras theorem, we have

i.e  20² = 12² + y² => 400 = 144 + y² => y² = 200-144 = 256

=> y = 16 meters

Step 3 :

Value of x + y  = 5 + 16 = 21 meters

answer: 7

step-by-step explanation: cause i checked it

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.