583hks8to6o9 583hks8to6o9

03-04-2019
Mathematics

contestada

2x+5y=20. , -2x+20y=-90. one solution. infinity many ir no solution. use elimination to find your answer

Respuesta :

03-04-2019

2x+5y=20
X=10-2.5y

-2(10-2.5y)+20y=-90
-20+5y+20y=-90
25y=-70
Y=2.8

2(2.8)+5y=20

5.6+5y=20
5y=14.4
Y=2.88

CHECK:
2(2.8)+5(2.88)=20

Ver imagen xAJHx

Answer Link

Otras preguntas

PLEASE HELP ME.........

How did some American Indiana’s react to the growing conflict between European powers In North America

21. You walk 3 miles from your house to the store. At the store you meet up with a friend and walk with her 2 miles back towards your house. How far are you fro

A 71-year-old client is concerned about brown patches of skin on their face and forearm. What is the appropriate nursing statement?

what is consitituent assembly?

essay about a time you have been judged

Which of the following is not true about archaeal ribosomes? Multiple Choice A) They may possess ribosome binding sites homologous to bacterial Shine-Dalgarno

14. Determine if the statement is true or false.Justify your response.The expressions (-x) and --Xy have thesame value.

What is the difference between edge and core networks?

Usually, STUDENT and CLASS have a _____ relationship (takes/has).