karymerivaszamudio karymerivaszamudio

10-02-2021
Mathematics

contestada

Solve the system of equations 3x – 3y = 30 and 2x + y = 11 by
combining the equations.

Respuesta :

epicman00900 epicman00900

10-02-2021

Times bottom equation by 3 and top by 2 to get the same coefficient of x
6x-6y=60
6x+3y=33
Minus the bottom by the top
-9y=27
y=-3
substitute this in to one of the equations
2x -3 = 11
add 3 to both sides
2x=14
x=7

Answer Link

Otras preguntas

In a PERT network, non-critical activities that have little slack need to be monitored closely a.because PERT treats all activities as equally important b.bec

Katrina studied the Russian language in high school. Although not fluent, she did accumulate a large vocabulary. Years later she decided to go to Russia, so she

In a baseball game the batter hits the ball into center field and takes off for first base. The catcher can only stand and watch. Assume that the batter runs at

What are the eight steps to civilization? Which step is the ultimate goal of civilization?

what are 3 effects of global warming

Problem 4 The mass of a star 25 pt We see a very low mass star in orbit around an unseen star. We can assume that we have additional information that tells us t

Authors make you think deeply by

A horizontal circular turntable rotates about its center at the uniform rate of 10.9 revolutions per minutes. Find the greatest distance (in meter) from the cen

Ethical relativism can best be described as a: An ethical reasoning method that holds one should always consider the effect of one's actions on others. An et

Company X sells their products exclusively to companies in the Y market. In estimating demand from their business customers, Company X must understand that this