Heygirl9632 Heygirl9632

04-05-2021
Mathematics

contestada

Which system of equations is equivalent to the system of equations shown? 2x + 5y = -2 4x + 7y = 8

Respuesta :

Yang100 Yang100

05-05-2021

Answer:

x=9, y=-4. (9, -4).

Step-by-step explanation:

2x+5y=-2

4x+7y=8

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

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

4x+7y=8

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

-4x-10y=4

4x+7y=8

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

-3y=12

y=12/-3

y=-4

2x+5(-4)=-2

2x-20=-2

2x=-2+20

2x=18

x=18/2

x=9

Answer Link

Otras preguntas

According to your textbook, what kind of supporting materials are used in the following speech excerpt: Not all Hollywood marriages are doomed to quick failure.

The value of y when x=7

-3 < n < 1 n is integar

Jason walked for 0.75 hours at the rate of 3.4 miles per hour. He determines that he walked 0.255 miles. Which best refutes Jason’s solution?

Based on what you have learned about internal migration patterns in the United States from your course and your text, identify the list of placemarked states th

A ball is falling at terminal velocity. Terminal velocity occurs when the ball is in equilibrium and the forces are balanced. Which free body diagram shows the

The sum of the measures of two of the angles formed by the intersection of two lines is 50°. Find the measures of the angles. I need four numbers, as in four an

How might you eliminate the x-term from the bottom equation? 5x - 3y = 6 5x + 12y = 12

Michaela transferred a balance of $5275 to a new credit card at the beginning of the year. The card offered an introductory APR of 8.1% for the first 4 months a

Please answer this correctly