byebaesowy6ia byebaesowy6ia

02-11-2018
Mathematics

contestada

how do you use the elemination method to solve x+y=9 , x-y=7

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

02-11-2018

add the 2 equations together

x+y =9

x-y =7

----------

2x = 16

divide by 2

x=8

x+y =9

substitute in x=8

8+y =9

subtract 8 from each side

y =1

(8,1)

Answer Link

Otras preguntas

The owner of a small computer repair business has one employee, who is paid an hourly rate of $22. The owner estimates his weekly profit using the function P(x)

Factor the expression x^4 + 6x^2 - 7 completely.

One atom of silicon can properly be combined in a compound with a. three atoms of hydrogen. b. four atoms of calcium. c. two atoms of oxygen. d. one atom of

A(n) __________ character is a character with few traits and who is not impacted by plot events.

A blue-light photon has a wavelength of 4.80 × 10^−7 meter. What is the energy of the photon? (1) 1.86 × 10^22 J (3) 4.14 × 10^−19 J (2) 1.44 × 10^2 J (4) 3.18

who was the wahhabist tribal leader who won control of the arabian peninsula and founded the kingdom of saudi arabia

In a works cited entry, the author's last name is written first. a. True b. False

Which statement most accurately explains why the War Powers Act (1973) was passed? (1) President Lyndon B. Johnson failed to send enough troops to South Vietnam

what is a absolute value of 1-31

Which words in the sentence make up the adjective phrase? What sort of food do crickets usually eat? a. do crickets b. usually eat c. of food d. What sort o