hudson9020 hudson9020
  • 03-01-2018
  • Mathematics
contestada

4a + 6b = 10 2a - 4b equals 12 what does 12a equal

Respuesta :

anchitthawi
anchitthawi anchitthawi
  • 04-01-2018
4a+6b=10 ----(1)
2a-4b=12 ----(2)
(2)*2; 4a-8b=24----(3)
(1)-(3); 6b-(-8b) = 10-24
14b = -14
so b = -1
then 2a-4(-1)=12
2a+4=12
2a = 8
so a = 4
then 12a = 12*4 = 48 #
Answer Link

Otras preguntas

what is 165,786 times 886
What's the answer to 13 - 3/2x =37 using distributive property plssss help test due in 10 minutes.
Why is illegal immigration a controversial issue? A. People think that the current laws on immigration address the issue well. B. There are far fewer illegal i
What is a cellular structure that performs a specific function in the cell?
Enter the phrase as an algebraic expression. 61 less than j
What do they pray to?
1. I started this business after dropping out of college and my buddy and I wanted to start this company. We had very little money or business knowledge but lot
Last week only 56 flowers had sprouted in the garden but by this week 105 1 point had sprouted. By what percentage did the number of flowers increase? * PLEASE
HELPPP TIMED The etiology of somatoform disorders may consist of all of the following except __________ factors. A. personality B. biological C. cognitive D. en
can some one get me a pic of olivia holt plz