shippy2003 shippy2003
  • 01-12-2020
  • Mathematics
contestada

10x + 4y = 20
13x - 4y = -66
If x = -2, what is the value of y?

Respuesta :

jovemarlie07 jovemarlie07
  • 01-12-2020

Answer:

y = 10

Step-by-step explanation:

If x = -2

10x + 4y = 20

10(-2) + 4y=20

-20+4y=20

4y= 20+20

4y=40

y=10

If x=2 and y=10

13x - 4y = -66

13(-2) - 4(10) =-66

-26 -(-40) = 66  so it all checks out!!

Answer Link

Otras preguntas

Cool Tees buys a shirt for $21. The sale price is120% of the original price. What is the sale price for this shirt?
how did you determine ray​
Escucha reconoce y escribe en el cuadro el género tipo de textura dinámica estructura y timbres de la siguiente audición "brújula"
discuss money supply and inappropriate government policies as causes of fluctuations in business cycles​
Ariel made cupcakes to sell. 2/3 of them were chocolate chip,25% of the reminder was strawberry and the rest were 90 vanilla cupcakes. a) How many cupcakes wer
Work out the area of the triangle. 20m 29m 25m and 36m​
What is 4 and 3/4 - 1 and 1/3? The answer is one of these: 2 and 2/7, 2 and 2/12, 3 and 5/12, or 3 and 5/7
What is the radius of the inside of the sewer pipe if the circumference of the outside of the pipe is 150.72 inches?
For what value of ‘a’ the number 7 /a is not a rational number​
I really need help with this I’ll give brainliest