nyny172
nyny172 nyny172
  • 13-08-2020
  • Mathematics
contestada

how do you solve this system of equation?
2x+4y=-4
3x + 5y =-3

Respuesta :

Space
Space Space
  • 13-08-2020

Answer:

x = 4

y = -3

Step-by-step explanation:

We can use substitution, elimination, or graphically.

Step 1: Rearrange first equation

2x + 4y = -4

2x = -4 - 4y

x = -2 - 2y

Step 2: Rewrite systems of equations

x = -2 - 2y

3x + 5y = -3

Step 3: Substitution

3(-2 - 2y) + 5y = -3

-6 - 6y + 5y = -3

-6 - y = -3

-y = 3

y = -3

Step 4: Find x using y

2x + 4(-3) = -4

2x - 12 = -4

2x = 8

x = 4

Graphically:

Use a graphing calc and analyze where the 2 lines intersect.

Ver imagen Space
Answer Link

Otras preguntas

9.59 divided by 18 equals what?
What is the graph of the inequality in the coordinate plane? x>=4
Which word in this excerpt from act I, scene I, of Richard III means “to listen”?
list the following rational numbers in order from least to greatest. -0.4 , 0.48, 4/8, -4/8. Someone plssssssss help me I need it for today.
What are three things that prokaryotic and eukaryotic cells must have
what is the unit price of 50 tickets for $37.50
essay on what is the one thing you cant do without
in 2008 , the World récord for swimming the 50 meter freestyle event was 21.34 seconds . supposing the athlete swam at a constant rate , what was his speed ? ro
How did Israel win the Six-Day War?
Ernest rode his bike 8 1/4 hours on Saturday and 6 1/4 on sunday he rode for a total of 88 1/2 miles for both days how long does it take him to ride a mile on h