roxannehinata roxannehinata

13-01-2021
Mathematics

contestada

Is (7, 1) a solution to this system of equations?

8x + 7y = 8
x + y = 8

Respuesta :

imranhafeez73 imranhafeez73

14-01-2021

Answer:

8x+7y =8------P

x + y =8------q

multiplying 8 by q

we have

8x+8y = 64--------R

8x+7y=8------P

8x+8y=64----R Substracting R from P

-y = -56

y=56

putting the value of y in eq q

x+56=8

x=8-56

x= -48

(x,y)=( -48,56)

no solution (7,1)

Answer Link

Otras preguntas

what is aerodynamics

You are choosing 3 of your 7 trophies and arranging them in a row on a shelf. In how many different ways can you choose and arrange the trophies?

Write a c++ program that accepts a string from the user and then replaces all occurrences of the letter e with the letter x

Divide (10m^8+4m^6+10m^5) / 2m^2

Construct a polynomial function with the following properties: fifth degree, 2 is a zero of multiplicity 3, -2 is the only other zero, leading coefficient is 2.

what best describes an advantage of using the subtotal dialog box?

find the weight of 100 ft3 of water

a clue that helps the reader understand a words meaning by using a comprehension to connect to the word to another word or an idea is known as a ____ clue de

Which expression is equivalent to (4 ^5/4 times 4^1/2 divided by 4^1/2)

: Allen is building birdhouses that require 12-ft-long boards. How many pieces that are exactly 12ft long can be made from a board that is 814ft long?