The ones digit of a number is 3 times the tens digit. if the digits are reversed, the new number is 18 more than the original number. find the original number.

Hence the original number is 13.

Step-by-step explanation:

Let us consider the ten's digit to be x.

so the one's digit will be 3x( as it was given the one's digit of a number is 3 times the ten's digit ).

so the number could be represented as x 3x   or it can also be represented as:  10x+3x=13x

after reversing the number the number becomes: 3x x

or it can also be represented as: 3x×10+x=30x+x=31x

now the new number is 18 more than the original number, that means:

31x=13x=18

18x=18

x=1

Hence the original number is 13.

and the reversed number is 31.

3x3 = 9 and 2x2 = 4

step-by-step explanation:

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.