charliewood charliewood

07-03-2021
Mathematics

contestada

x + y = 30

2x + 4y = 84

Substitution
or
Elimination
I

Respuesta :

sarahoshisanya sarahoshisanya

07-03-2021

Answer:

(X,Y)(18,12)

Step-by-step explanation:

x + y = 30

2x + 4y = 84

___________

2x+2y=60

2x+4y=84

_________

-2y=-24/-2y

y=12

2x+4(12)=84

2x+48=84

2x=84-48

2x/2=36/2

X=18

Answer Link

Otras preguntas

Please explain how to do it

The radius of a circle is 11.7 in. Find the circumference \textit{to the nearest tenth}to the nearest tenth.

Jane dropped Kinsley off at a train station and left at the same time that Kinsley's train departed. They are moving in the exact opposite directions, the trai

It is common knowledge that a fair coin lands heads up 50% of the time and tails up 50% of the time. For fair coins, a probability of O is assigned to the coin

Azul performed an experiment to determine which crank powered radio works best. He cranked 15 randomly selected radios of each brand 30 times at the same speed

3 Say where you went and what you did Escribe qué hizo la familia de Jorge la semana pasada. Usa los verbos hacer, ser, ir, dar y ver. (Tell what Jorge's family

Barbara Demick wrote that in North Korea, “spying on one’s countrymen is something of a national pastime.” Examine how the North Korean culture of spying affect

1. What is the Hertzsprung-Russell Diagram (stars). Complete a drawing and explain.2. What is the name of our galaxy and what is its design? Be sure to make a d

The line y = 2x + 5 is intersected by the line y = 2 at point P. Find the coordinates of point P.

Incomes math pls help