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 ( 67+ )
Otras preguntas
HELPPP ASAP 25PTS! Find the area of the shape
What is the distance from (-5,2) and (0,4)?
A liquid has a density of 0.87g/ml. What volume is occupied by 25g of liquid
So if the answer is $5,505,210. 50, you would input 5,505,210. what is forecast revenue in 2017?
The __________ is the visible aspect of characteristics passed from parent to offspring
Fine properties, inc. , negotiates with general maintenance corporation to include a liquidated damages clause in their contract. To be enforceable, at the time
Which approach attempts to link measure of cognitive performance t measure of brain structure?
Which phrase best states the meaning of "pluck at his beard" as used in the excerpt? (8) ...Had King Solomon been the janitor, with all his treasures piled up i
Natalia y Carmen no 1 of 1 muy bien al béisbol. (jugar)
In 2012 a documentary called king of bain was released. it accused a company headed by presidential candidate mitt romney of "stripping american businesses of a
