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

Work out the size of an interior angle of a regular nine sided figure.

Alejandro read 40 pages in 60 minutes. What is his unit rate in pages per minutes

She (teach)here for more than six years.(Use the correct tense of the verb'teach')

Which statement best describes this excerpt? Most of the sentences contain comma splices. It consists mostly of run-on sentences. Most of the sentences have a s

PLS HELP!!! Instructions: Find the measurement of the angle indicated in the following parallelogram.

For the linear function f, the graph of y = f(x) in the xy plane has a slope of -3 and passes through the point (-5, 4). Which equation defines f?

Change 756.2 % to a decimal number.

What does this mean: ¿Por qué no vienen a verme?

If we hear wheezing, What is it usually related to ________.

9. Barbara bought some lilies that were $3 each and roses that were $4 each. She bought a total of 16 flowers for $54. How many lilies did Barbara buy?