moneybaga8960 moneybaga8960

02-12-2019
Mathematics

contestada

solve the systems of equations using elimination
3x-5y=-2
4x-7y=-3
a.(-1,-1)
b.( -7/3, -1)
c. (-7/3, 1)
d.(1, 1)

Respuesta :

Yang100 Yang100

02-12-2019

Answer:

x=1, y=1. (1, 1). The answer is D).

Step-by-step explanation:

3x-5y=-2

4x-7y=-3

--------------

4(3x-5y)=4(-2)

-3(4x-7y)=-3(-3)

------------------------

12x-20y=-8

-12x+21y=9

--------------------

y=1

3x-5(1)=-2

3x-5=-2

3x=-2+5

3x=3

x=3/3

x=1

Answer Link

Otras preguntas

in one mole of carbon there are grams of carbon

Answer the questions

Consejos para las vacaciones (Audio Recorder Activity)In this activity, you will record advice, in Spanish, that you would give to a friend going on a beach vac

How many grams of CAF2 are in 1.25 L of a 0.15 M solution of CaF2

160° What is the value of x? x =

This sentence has some mistakes in capitalization, punctuation, and use of adjectives. Select each word or group of words that has a mistake. the excited stude

Which is the saturated zone?

What is the slope of a horizontal line? * Choose zero Positive Negative Undefined

20 pts pls help me Which climate change led to the development of farming and the Neolithic age? A) the start of the ice age B) the end of global warming C)

A box with a mass of 2 kg accelerates in a straight line from 4 m/s to 8 m/s due to the application of a force whose duration is 0.5 s. Find the average strengt