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 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

15 points Spanish Usted and Ustedes commands
solve this system using the Elimination method -4x - 2y =-18 x + 3y = 8
Take a few moments to look over the Practical Advice for Study section again in your notes. According to 1 John, if a person claims to be a follower of Christ,
why do some events need to be told in order?
HELP!! Find x. Round to the nearest tenth.
The sides of a triangle are 5.2 cm, 6.3 cm and 9.4 cm, each correct to the nearest millimetre. Calculate the lower bound of the perimeter of the triangle.
83 + (25) : 5 > 32 + 42
Find the mean of x of each distribution.Correct answers will be mark as BRAINLIEST and get 50 pointsWrong answers will be reported​
GEOMETRYI'm working on a project and im not quite sure what bullet points 1 & 2 are asking. Help would be appreciated by telling me what I have to do.​
How would I do this? Fill the blank with the most logical word J’aime boire du/de la/de l’_________ quand j’ai soif Apres l’école je mange le/la/l’___________