emilyy3 emilyy3

12-01-2016
Mathematics

contestada

X= y-2
2x+3y=21
Solution_______

Respuesta :

Billymkhoi Billymkhoi

12-01-2016

x= y-2

2x+3y=21
⇒ 2(y-2)+3y=21
⇒ 2y-4+3y= 21 (distributive property)
⇒ (2y+3y)-4= 21 (combine like terms)
⇒ 5y= 21+4
⇒ 5y= 25
⇒ y= 25/5
⇒ y= 5

The final answer is y=5~

Answer Link

Otras preguntas

40% of 70 is what number

The slope of a speed-time graph indicates a. acceleration. b. speed. c. direction. d. velocity.

What are the four different factors that decide what committee a congressman will join

Maisha is using special paint for her artwork.The art supply store chargers $ 1.50 per cup of paint.Maisha needs 2 pints of blue paint, 3 cups of green paint, 1

When you are dissatisfied with a product or service, filing a lawsuit is the fastest, most direct way to get action. Please select the best answer from the choi

Which of the following is NOT a member of OPEC? a. Saudi Arabia b. Russia c. Nigeria d. Venezuela

A runner's torso should be completely stretched and lean slightly forward when running. a. True b. False

Which of the following is found in an animal cell, but not in a plant cell? a. nuclei b. centrioles c. mitochondria d. central vacuole

Which two regions controlled most of the trade that occurred in Europe during the Middle Ages? a. France and Spain b. Italy and Germany c. Turkey and Greenla

__________ is caused by fungus. Options: The flu. Pneumonia. Athlete's foot. Diphtheria.