dylandouglas5396 dylandouglas5396

03-11-2017
Mathematics

contestada

"the sum of the digits of a two-digit number is 13. reversing the digits produces a number that is 9 less than the original number. what is the original number?"

Respuesta :

tynollette tynollette

03-11-2017

suppose the one's digit is x, the ten's digit is y. the original number is 10y+x, the reversed number is 10x+y

x+y=13
(10x+y)=(10y+x)-9 =>9y-9x=9 =>y-x=1
Add the two equation to solve: 2y=14 =>y=7
x=13-7=6
the original number is 76.

Answer Link

Otras preguntas

What the answer to the question

Read the passage from “ by the waters of Babylon “ how does visiting the place of the gods affect the narrator

Near the end of a marathon race, the first two runners are separated by a distance of 35.0 m . The front runner has a velocity of 3.25 m/s , and the seco

HELP ASAP FOR BRAINLIEST: The time required to finish a test is normally distributed with a mean of 60 minutes and a standard deviation of 10 minutes. What is t

Calculate the ratio of surface area to volume of an imaginary cubic cell measuring 4mm long on each side?

Pls Help LOTS OF POINTS

If a person called me at 9:11 p.m. and it's 9:39 p.m. Saying they on way how far they should be from me

A box contains 4 bags of flour. The total mass of all 4 bags is 6kg. What is the mass of each bag in grams?

solve for y. 6 = 2 (y+2)

As an architect incorporates structural balance, he/she considers _______________. a. the linear symmetry of the building and its relationship with surrounding