Alyyyyyyy Alyyyyyyy

01-12-2015
Mathematics

contestada

solve for x and y
-2x-y=-9
5x-2y=-9

Respuesta :

taskmasters taskmasters

01-12-2015

we use equation 1 first.
-2x -y = -9

-y = -9 + 2x

y = 9 -2x

We substitute value of y in equation 2

5x - 2 (9 - 2x) = -9

5x -18 - 4x = -9

5x - 4x = -9 + 18

x = 18 -9

x = 9

We now find the value of y

-2x -y = -9

-2 (9) - y = -9

-18 - y = -9

-y = -9 + 18

y = 9 - 18

y = -9

Answer Link

Otras preguntas

Difference between temporary and permanent methods of contraception

Which statement best explains the social contract theory? Strong leaders do the best job of ruling a country of diverse people. Countries are best served when

What are oromo's cultural values?

A line on a graph passes through the point (0, 5). Does the graph represent a proportional relationship?

what is the zeff of carbon

PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!! Paula ran a total of 12 miles over th

write a poem about how important is time

1&2&3 please……………………….

state three differences between text data and number data

Ortho and para hydrogen are....... a). molecular form. b). Nuclear form. c) allotropic form. d). All