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 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

Tina's salsa class membership, which is $15, is deducted automatically from her bank account every month. Which expression shows the total deductions for the ye
what is the type of conflict in alice in wonderland
because of the rain, sarah asked if either richard or don had a raincoat. which of the following is the correlative conjunction in the sentence above? a. becaus
when was the declaration of independence signed?
Time (weeks) Lake Depth (feet) 0 346.0 2 344.8 5 343.0 7 341.8 10 340.0 12 338.8 An environmental agency studying the effects of drought on a lake found th
where is the area around 54°40’
why is it important to start at the zero mark of a ruler/meterstick + triple beam balance when making measurements? please help me
what is horse in german
What 2 groups are currently working to solve this problem? The problem is Driving Under the Influence!
why do some readers prefer memoirs?