t1ddiabeticboo t1ddiabeticboo

16-12-2019
Mathematics

contestada

twice a number plus three times another number equals 4. three times the first number plus four times the other number is 7. what are the numbers?

Respuesta :

Yang100 Yang100

18-12-2019

Answer:

x=5, y=-2. (5, -2).

Step-by-step explanation:

2x+3y=4

3x+4y=7

----------------

3(2x+3y)=3(4)

-2(3x+4y)=-2(7)

----------------------

6x+9y=12

-6x-8y=-14

-----------------

y=-2

2x+3(-2)=4

2x-6=4

2x=4+6

2x=10

x=10/2

x=5

Answer Link

Otras preguntas

Jack spends 15% of his pocket money on sweets and 35% on magazines he saves the rest how much does he spend and save every week

after selling three fifth of its books, a bookstore had 880 textbooks left. how many books were in the bookstore initially

Each week our school’s team travels to other schools for competitions. Today the five members of the gymnastics team and seven weight lifters are on the way to

what is the answer to 6/12×-10=30

The positive acute angle formed by the _____ side of an angle in standard position and the x-axis is called a reference angle. left acute terminal right

How did the Spanish change their policy in 1802? Why did they make this change?

Story: My friend Douglass biography by Russell FreedmanQuestion: if slavery was the cause of the war what were the effects of slavery ? Please help!

Give me an introduction to Algebra 1

One month ago, Kyle made a goal to save $800 for a new video camera. The deadline is in seven moneths. He now has $110 saved. Evaluate his progress toward reach

Other than the United States, which allied country had the least amount of casualties during the war?