minerva2005hernandez minerva2005hernandez

07-04-2020
Mathematics

contestada

Solve the following system of equations by elimination. Express
the solution as an ordered pair (x, y).
-x- 3y = 20
4x + 3y = 1

Respuesta :

juls1816 juls1816

07-04-2020

Add the two equations together with the same variables

-x+4x=3x
-3y+3y=0
20+1=21

You now get

3x=21

Divide and find x =7

Plug in x to the equation to find y
Y=-9

(7,-9)

Answer Link

Otras preguntas

Find the amount that the daily worker Ram Singh would receive if he invests Rs. 8,192 for 18 months at 12 ½ % per annum, the interest being compounded half year

Please help me on this question

Kayleigh babysat for 11 hours this week.That was 5 fewer than 2/3 as many hours as she babysat last week,h. Write write an equation to represent the number of h

In a class of 100, every boy had 2 girlfriends, but no girl had more than 1 boyfriend. If exactly 13 girls had no boyfriend, then how many students in the class

..............love is what ?

the Amazon River basin is considered a good resource for producing which of the following products? A. cold-weather crops B. wheat C. alpaca wool D. prescri

You have 2500 square feet for selling space. You want to reserve at least 125 square feet for each product category you will carryovers 30% of the space will be

use the graph of y = f(x) to graph y= f(x) + 2

MY LAST FIGGIN QUESTION PLEASE BE 100% SURE!!! AT LEAST BE SURE!!!!!!!!!!!!!!!!!!!!!!!!!!! PRETTY EASY, IM JUST DUMB Which quotation from the excerpt best repre

The formula for the volume of a cone is most like the formula for the volume of which figure? Question 12 options: pyramid prism sphere cube