be0ckie3syoujennaro be0ckie3syoujennaro

19-10-2016
Mathematics

contestada

The tens digit of a two digit number excedds the unit digit by 5 . if they are reversed b the new number is less by 45. if the v sum of their digits is 9 find the numbers

Respuesta :

apologiabiology apologiabiology

25-10-2016

x and y are digts
x is tens y is ones

x=y+5

10y+x=10x+y-45
x+y=9

we have
x+y=9
x=y+5
sub
y+5+y=9
2y+5=9
minus 5
2y=4
divide 2
y=2

sub back
x=y+5
x=2+5
x=7

the number is 72

Answer Link

Otras preguntas

The article is “Volar by Judith Ortiz Cofer” and the questions are in Commonlit! Please help! It’s due in around 10 hours! and for the final question, my teache

please help no spam!!!

easy tig question i have a few more after this

Which was a result of the excommunications in the year 1054? O A. They ended the rule of Justinian I. B. They forced the adoption of the Nicene Creed. C. They

Ray of light is always refracted in

Which of the following statements about the Frontier Wars is FALSE? a. Adobe Walls was a camp of buffalo hunters. b. Cynthia Parker’s son became a Comanche chie

Andy Has 3 Apple's And He Gives 2 To John How Many Apple's Does Andy Have Now

30. When was the Declaration of Independence approved? A.July 14, 1976 B.July 4, 1776 31. Who was the main author of the Declaration of Independence? A.Thomas J

Online recommendation engines typically are based on

Where does Tess take them that according to Genie is not acceptable in New York?