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

Challah deposited $900 in a new account that earns 6% simple interest .After 2 years how much interest will she have earned ?

When a balloon is filled with air, we say it inflates. What does the word inflation mean when it is applied to money? A. the economy shrinks quickly B. the co

400% of a number is 45. Find the number

How are speech, music, and sound effects captured?

Consider a tax cut which affects not only consumer disposable income, but also afterminus−tax earnings from labor supplied to labor markets and from financial

Which of these is a controllable risk factor for disease? A.Climate B.Nutrition C.Poverty D.Age

A coffee pot holds 5 1/2 quarts of coffee. How much is this in cups?

Who discovered gold in California? A) Joseph Smith B) Marcus Whitman C) John Sutter D) Joseph Walker

why might African leaders have been willing to participate in the exchange of slaves for goods? A- They were interested in starting their own colonies in the Am

HELLLLLP ill make you brainiest and ill give u a lot of points if you HELP ME Directions Part One. Review the two e-mail messages below for their adherence t