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
Which of the following words is most likely to carry a connotation? A. Walk B. Stride C. Stand D. Run
Perpetual Endless Relentless Stubborn Immovable Steady Tireless Enduring Never-ending Constant Ever-lasting
A tennis coach took his team out for lunch and bought 8 hamburgers and 5 fries for $24. The players were still hungry so the coach bought 6 more hamburgers and
The purpose of the First Continental Congress was a. to protest the Stamp Act. b. to collect taxes from the colonies. c. to declare the colonies independent. d.
when the moon earth and sun ar aligned in what order what phase of the moon do we see A.new moon B.crescent moon C.quater moon D.full moon
When the Moon reaches equal periods of orbital and rotational periods, it's known as _______ rotation. A. non-conforming B. imbalanced C. synchronous D. asy
Describe a way that someone could estimate the length of a book
You feel every citizen has the right to own a gun. If you argue for that right based on the Constitution, you’re most likely to refer to A. Amendment I. b. Ame
An element with characteristics of a metal and a non-metal
Who became president of the United States after Nixon’s resignation?
