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)

Relax

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

which american author wrote essays in the form of a letter

If the sales-tax rate is 7.5%, then what is the sales tax on a $48.00 purchase?

if log 27 is 1.436,then what is log 9

what is 0.96875 rounded to the nearest thousandth?

Which research question would have been most interesting to the gestalt psychologists?

Which of the following statements best characterizes the country of North Korea? North Korea has been ruled by dictators since 1948. North Korea has never strug

Susan Anthony and Elizabeth Stanton were responsible for starting the American Rights Association in 1866.

What’s the difference between starch and glycogen

Im not sure how to solve this problem in Algebra 6z=4(1/2z-8)

A spaceship ceases to be matter when it is in space