peytongregory94 peytongregory94

11-02-2021
Mathematics

contestada

What is the y-coordinate of the solution to this system of equations?
5x-8y=1
3x+6y=-21

Respuesta :

11-02-2021

5x-8y=1...(1)
3x+6y=-21...(2)

(1)*3:
15x-24y=3...(3)

(2)*5:
15x+30y=-105...(2)

(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2

Answer Link

Otras preguntas

In 1896 who did japan convince to open its ports to trade with japan

According to freud's psychoanalytic theo1y, a typical 5-year-old child is in the ___ stage of development.

What's the difference between accuracy and precision

What best identifies the use of a participle? (The word DRIVEN is in bold font) A) DRIVEN by his love of science, Victor Frankenstein created a terrible monster

A sound wave increases in pitch. Which of the following changes has occurred? a. the wave frequency decreased b. the wave amplitude increased. c. the wave ampli

What does procedure meam in science

Which figure shows a line of reflectional symmetry for the letter T?

5x + 2y =20 when x =0.3?

A(n) __________ is the process by which citizens propose legislation or constitutional amendments through the petition process followed by a popular vote. gerry

64, -48, 36, -27 which formula can be used to describe the sequence