madrigalv47 madrigalv47

03-10-2014
Mathematics

contestada

how to solve 0.01x+0.07y=0.22 and 0.03x-0.05y=0.14 by substitution

Respuesta :

flavour5 flavour5

03-10-2014

0.01x + 0.07y = 0.22
0.03x -0.05y = 0.14

x + 7y = 22
3x - 5y = 14

x = 22 -7y

3*(22-7y) -5y =14
66 - 21y -5y =14
-26y = - 52
y =2

x + 14 = 22

x= 8

Answer Link

Otras preguntas

"this rock is fifteen million years old," is an example of ________.

Use A=P(1+rn)nt A=P(1+rn)nt where: A = the amortized amount (total loan/investment amount over the life of the loan/investment) P = the initial amount of the l

I’m what ways are the roots and stems of a plant alike and different?

What was the reason for the Constitutional Convention?

Constitutional powers that are assigned to one governmental agency, but are exercised by another agency with the express permission of the first, are known as _

What does x equal and what does why equal?

Am I doing this right? 16,14=4 15,35=5 24,32=4 27,63=9 20,80=20 18,38=2 14,49=7 66,99=33 9,35=1 6,24,42=6 30,50,70=10 32,48,96=12 10w,5w=5 16xy,24xy=8 21ab,35a=

what were the goals of the writers of the state constitutions

7x300=7x blank hundreds

Which molecule is active first during dna replication?