prime5 prime5
  • 02-09-2016
  • Mathematics
contestada

find the digit that makes _ 3520 by 9

Respuesta :

musicotic
musicotic musicotic
  • 02-09-2016
Remember the divisibility rule for 9. The sum of the digits of the number must be divisible by nine. 
Let the digit be [tex] x [/tex]. Then [tex]x+3+5+2+0=x+10[/tex] has to be divisible by nine. Recalling that [tex] 18=9*2 [/tex], we note that [tex] x=8 [/tex]. 
Answer Link

Otras preguntas

If I throw a 10 kg ball with a force of 60 N, what will the ball's acceleration be?
scientist and all branches of science have developed scientific theories. Which of the following statements is TRUE about all scientific theories?.
anyone know asap pls
Hello there can someone please help me out with these exercises?! Please,please,help as soon as possible!!!! Please help me!!!
please help, easy question
Why do bridges collapse? (Give at least three reasons)
What happens when you place a cell in a hypotonic solution?.
What is the slope for y=4x+5
In your own words describe how plastic pollution may affect the living tissues of animals? PLEASE HELP ITS URGENT! 40 POINTS!
Which of following is NOT true about rectangles? options: lines of symmetry are the perpendicular bisectors a rectangle is also a square the diagonals are not l