eliseva
eliseva eliseva
  • 24-01-2021
  • Mathematics
contestada

HELP ASAP

Solve the system of equations
X + 3y = -20 and -4x - 4y=0 by combining the equations

Respuesta :

LuisaSosa
LuisaSosa LuisaSosa
  • 24-01-2021

Answer:

x=10 and y=-10

Step-by-step explanation:

first pick for what you want to solve for first, in this case I picked y

so I put them for subtraction and i hade to multiply the first equation by 4 so I could cancel my X's and I just solved for y

then I plugged in my answer to the first equation, you can pick any of the 2 equations, and I solved for x

Ver imagen LuisaSosa
Answer Link

Otras preguntas

There must be extraordinary things to discover and understand in space. I get that. But, what is our rush? Wouldn't our energy be better spent trying to solve s
What is the name of the compound with the formula NaHCO3 ?
Which of the following statements BEST describes Montag’s and Clarisse’s first interaction? Question 14 options: a) Clarisse is eager to learn about becoming a
What is Hard News ?​
20. What makes up the backbone of a DNA molecule? ribose and deoxyribose nucleic acids RNA molecules sugars and phosphates
What is the solution to this equation? 7x – 3(х – 6) = 30 A.x= 12 B.х = 6 C. х = 3 D. x= 9û
A car increases from 15 km/s to 45 km/s in 5 seconds. Calculate the average acceleration of the car during these 5 seconds. 6 km/s2 12 km/s2 30 km/s2 60 km/
Simplify. 7/32 − 6/72
A monopoly is the control of a market by ____________________________ Question 4 options: a few dominant firms. a single producer. the government. a foreign tru
passes through (4, 2) and (4,-5) in standard form