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

Which of the following statements is true? A. As a depressant, alcohol slows down reaction time. B. As a muscle relaxant, alcohol makes it harder for the musc

According to a study by de Anna students, the height for Asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5

A marathon is 26 1/5 miles long. There are 36 stations evenly spread throughout the course. Jessie ran 2/3 of the race whenshe was forced to stop because of shi

While changing her tire, marguerite bumped the hubcap and all of the lug nuts fell into a storm sewer. after fretting for several minutes, she suddenly realized

What is the difference between point of view and choice of person?

Compare 2 x 10^4 and 8 x 10^3

Which sentence contains an error involving a dangling modifier? A) Doing a few tap-dance steps, the floor got scratched. B) To get to Amy's house, you have to

2 hectoliters = ____ centiliters

I need help on this question from French 1 Fill in the blank with the correct form of aller: Nous ____________ à la gare.

The endocrine gland that produces primarily testosterone is the