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 ( 34+ )
Otras preguntas
A pound of seedless red grapes costs $2.75. Drew must spend less than $9.35 on a bunch of seedless red grapes.Inequality:Solution:Interpretation:
When was William Shakespeare born
Solving systems by elimination: 2x + 4y = -4 3x + 5y = -3 Please show me your work so I can do the rest myself. Thanks!
What is the numerator or denominator of 4/5
How does transpiration play a role in the water cycle ?
two identical freight cars roll without friction towards each other on a level track. one car rolls 2 m/s the other 1 m/s. after the cars collide they couple an
Can u paraphrase the quote ”let things take their course”
A child is standing across the street from his apartment . His mother is on their balcony . The angle of elevation between the child's eyes and his mothers eyes
A passenger on a boat moving at 1.70 m/s on a still lake walks up a flight of stairs at a speed of 0.60 m/s , as shown in the figure . The stairs are angled at
How does transpiration play a role in the water cycle ?
