Using the pin keypad in the picture, you can see that there are two letters on the number 1 key and three letters on 2 to 9 number keys. How many different PINs are represented by the same sequence of keys as 2181

the y will be in still but your answer will be y x 3

step-by-step explanation:

jk: )

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this