oliviaguillen99 oliviaguillen99

16-06-2016
Mathematics

contestada

find the value of Q in the system so that the solution to the system is

x-3y=4
2x+Qy=8

Respuesta :

jhonyy9 jhonyy9

16-06-2016

x -3y = 4 multiplie both sides by -2 => -2x +6y = -8
2x +Qy = 8

-2x +6y = -8
2x +Qy = 8
------------------ assume the same terms
0 6y +Qy = 0

6y +Qy = 0

Qy = -6y divide both sides by y and will get

Q = -6

Answer Link

Otras preguntas

what is wooden language?

Number 33 apparently the answer is 4 but I have no idea why

An electromagnetic wave traveling through a vacuum has a wavelength of .15 meter. What is the period of this electromagnetic wave?

if m + 4n = 2n + 8m ; what is the ratio of n to m ?a) 1:4, b) 1:-4, c) -4:1, d) 2:7, e) 7:2

why doesn't electric current flow through rubber?

What is 6=radical v-2

how discovered displacement

the question says evaluate 2a-b/b when a=4 and b=-3.How would I start this problem?

Solve each questions by taking square roots 1.k²=76 2.k²=16 3.x²=21 4.a²=40 5.x²+8=28 6.2n²=-144 7.-6m²=-414 8.7x²=-21 9.m²+7=88 10.-5x²=-500 11.-7n²=-448 12.-

if you can see the conductor in a lamp should you use it or not?