the sum of the digits of a two-digit number is 15. the unit digit is one less than the tens digit. find the number. let x be the tens digit. show the equation!

x = tens digit

y = units digit

x + y = 13

x = y -1

Substitute the second equation into the first to get

y - 1 + y = 13

2y = 14

y = 7

x = y - 1

x = 7 - 1 = 6

67 is the two digit number.

i dont know

step-by-step explanation:

why didnt you study

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .