mayvar
mayvar
05-09-2014
Mathematics
contestada
use elimination to solve: NN+ND=50
5NN+10ND=450
Respuesta :
mariamikayla
mariamikayla
05-09-2014
[tex]5NN+10ND=450\\5(NN+2ND)=450 \\ NN+2ND=90 \\ \\ \boxed{NN=90-2ND} \\ \\ NN+ND=50 =>\boxed{NN=50-ND} \\ \\ \\ 90-2ND=50-ND \\ -2ND+ND=50-90 \\ -ND=-40 \\ \\ \boxed{ND=40} \\ \\ NN=50-ND \\ NN=50-40 \\ \\ \boxed{NN=10}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 72+ )
Otras preguntas
PLEASE ANSWERS BOO'S!!!!
Which statements about local and global winds is true
What can search the Internet and select elements based on important words? A. Monitor B. Websites C. Printer D. Search engines
Public goods and services are paid for by ___. (Options in picture ;) thanksss)
The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. What is the approximate pH of a solution if the concen
How are the levels of organization in animals and plants different?
Find the value of b that makes the fraction equivalent. 12/3 = b/15
which atomic model proposed that electrons move in specific orbits the nucleus of an atom?
1.Did learning about food safety hazards encourage you to take precautions in the kitchen? Explain. 2.did learning about the precautions food service establishm
What factors in the atmosphere seem to have effect on amount of radiation received from the sun?
