Coslan249 Coslan249
  • 22-07-2014
  • Mathematics
contestada

A two digit number is 4 times the sum of its digits and twice the product of its digit.FIND THE NUMBER

Respuesta :

konrad509
konrad509 konrad509
  • 22-07-2014
x - tenths digit
y - units digit

[tex]10x+y=4(x+y)\\ 10x+y=2xy\\\\ 10x+y=4x+4y\\ 10x+y=2xy\\\\ 6x=3y\\ 10x+y=2xy\\\\ 3x=y\\ 10x+y=2xy\\\\ 10x+3x=2x\cdot3x\\ 13x=6x^2\\ 6x^2-12x=0\\ 6x(x-2)=0\\ x=0 \vee x=2\\\\ y=3\cdot2\\ y=6\\\\ 10\cdot2+6=\boxed{26}[/tex]
Answer Link

Otras preguntas

what will happen if lymph is not returned to blood?
Choose the right answer. During ___________, scenes from the Bible and mythology were often inspiring subjects for paintings. the twentieth century The Rococo p
The Spanish verb "hablar" is a "go" verb. true or false
This organization works to ensure that civil liberties are not being violated and provides support to those in need of representation or resources when fighting
What might you infer about the theme of Hiroshima from the following passage? They still wonder why they lived when so many others died. Each of them counts m
The ______ is what the story is about A. Plot B. Theme C. Climax D. Setting E. Conflict
The increase in greenhouse gases during the last 150 years is primarily a result of
What is believed to be the major contributor to the widening gender gap in college enrollment?
Help i do not understand this plllleeeaaassseee
What do scientist believe provides evidence for the Big Bang Theory