coolblue101
coolblue101
13-04-2017
Mathematics
contestada
need help pls solve 7x-4y=-7 5x+y=22
Respuesta :
Аноним
Аноним
13-04-2017
7x-4y=-7
5x+y=22
multiply 4 on the 2nd equation
20x+ 4y=88
now you have
7x -4y = -7
20x + 4y = 88
--------------------add
27x = 81
x = 3
7x-4y=-7
7(3)-4y=-7
-4y = -28
y = 7
answer (3, 7) is the solution
Answer Link
ethanpace69
ethanpace69
13-04-2017
i think this would be the correct answer
{x,y} = {3,7}
Answer Link
VER TODAS LAS RESPUESTAS ( 74+ )
Otras preguntas
Rudi got cut from track team tryouts and she is very distraught. She worked very hard to make it through several days of tryouts, and now she has come to you to
If you were the governor of Georgia and you wanted to see your state increase its access to international markets, which of these options would you choose to d
What takes up the vast majority of space in an atom? a relatively small nucleus, a relatively large nucleus, a relatively large electron cloud, a relatively
Please help! 12 Points! I'll give Brainliest!
A quadratic function has zeros of -2 and 14. Find its axis of symmetry.
Qualification, Certification, and Credentialing Personnel are part of which NIMS Management Characteristic
the polynomial -2 x squared is a with a degree of
1. 3(4 - 2x) = -2x A. -1 B. 1 C. 2 D.3
Select the expression that is equivalent to |4-3i| a. 1 b. 7 squared c.5i d.5
x2 + 6x + 9 I NEED HELP ASAP
