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 ( 46+ )
Otras preguntas
what is the greatest common factor of 49 and 63
Im sorry, im not good with negatives and positives xD this is the last one Which values satisfy the inequality? |x| < 3 Choose all answers that are correct.
How did the Holocaust contribute to ongoing Arab-Israeli conflict? a. Since so many Jewish people had been murdered in the Holocaust, many international organi
An American we celebrate our unity and also celebrate our diversity.Why are they both strength of our country and why
you spend $46 on supplies to make wooden ornaments and plan to sell the ornaments for $8.50 each what is the number of ornaments that you must sell in order to
It is often easier to determine if an object or organism possesses the characteristics of life rather than life itself. a. true b. false
The rise of China’s naval power under Admiral Cheng-Ho occurred during the _______ dynasty. A. Ming B. Zhou C. Qin D. Tang
how to order 2.8, -2 3/4, 3 1/8, -2.2 least to greatest
What is the definition of a map legend
Can u guys explian this problem to me:(-9)(-6)(15)(-7+7)
