elspeth elspeth

16-01-2017
Mathematics

contestada

x+2y=13
3x-5y=6
Please help - use substitution to solve each system of equations...

Respuesta :

doodle10 doodle10

16-01-2017

Answer y = 3 and x = 7

3(13-2y) - 5y = 6
39 - 6y - 5y = 6
39 - 11y = 6
39 = 6 + 11y
33 = 11y
3 = y

So x = 7

Because x + 2x3 = 11
x = 11 - 6

Answer Link

Otras preguntas

What will most likely happen when two bromine atoms bond together? A. The atoms will become less stable. B. An ionic bond will hold them together. C. A covalent

Solve for p. 3(p+q) = p A) q = -2/3p B) q = -3/2p C) p = -2/3q D) p = -3/2q

Name a land animal that is sessile. Why would this adaptation be a disadvantage to an animal in a land biome?

Arrange from highest to lowest in order of decresing mass: 1 Gg, 100 g, 1 kg, 50 cg, 1 cg, 1 dg, 50 million ng

The first species of early humans to travel outside Africa was _____. A.) Homo erectus B.) Homo sapiens C.) Homo habilis D.) Neanderthals

How do heterogeneous mixtures differ from elements? Provide two differences.

A satellite camera takes a rectangular-shaped picture. The smallest region that can be photographed is a 4-km by 4-km rectangle. As the camera zooms out, the le

An archaeologist discovering a Byzantine coin bearing a portrait of a woman indicates that in the Byzantine Empire __________. A.) women and men had equal right

The coach of the Relay race team promised his athletes a reward if they win gold or silver. The reward is divided up relative to speed. Jenny got a sixth of the

For the best night photographs still need to have a camera with the shutter speed of about 3 to 30 seconds true or false