14-07-2020
Mathematics

contestada

X+ y = 9
X- y = 7
O A. (16, -7)
O B. (8, 1)
O C. (12,-3)
D. (7,0)

Respuesta :

olivia3314 olivia3314

14-07-2020

Answer:

B. (8,1)

Step-by-step explanation:

x+y=9

x-y=7

x=7+y

Therefore in the equation x+y=9 , x=7+y

(7+y)+y=9

7+2y=9

2y=9-7

2y=2

y=2/2=1

therefore x=7+y

=7+1=8

Answer Link

Otras preguntas

By 1900 "little theater" had appeared in the United States? 1. True 2. False

How is the 17,19,23 amendment related to voting process

What did some people in the late 1800s believe was necessary to improve the situation of native americans?

Which statement most completely describes the primary role of the cell in a multicellular organism? A.The combination of chemical functions and genetic materia

Two step equations 2/3x-7=11

The steppes of northern Kazakhstan are a good area for _____.

One of the first scientists of the Renaissance to advance taxonomy through firsthand observations was _____.

A softball is hit high into the air. As it rises, the softball A) loses kinetic energy and loses potential energy. Eliminate B) loses kinetic energy and ga

Muhammad said, "The ink of scholars is more precious than the blood of martyrs." What is one way this mantra reflected in Abbasid society? (5 points)

Can you help me with this?