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

I need the answers with work someone please help if not ima fail math

Find f¹(x) for the function f(x) = -4. 2 f¹(x) = [?]x + [ ]

How many 1/12 pieces are in 3/3? 3/3 = __/12

Help for today and if someone took the test plese tell me

Explain why the "+ C" is not needed in the antiderivative when evaluating a definite integral.

What was Vietnam’s economic struggle after the war ended

Water and ammonia molecules are roughly the same size and the same mass but ammonia boils at -28F (-33C) and water boils at 212F (100C). What can we conclude ab

if you mix red and blue what do you get

A small, positively charged ball is moved close to a large, positively charged ball. Which describes how the small ball likely responds when it is released?

Latoya bought 8 pounds of potatoes at a local wholesaler for $18. Her friend Herman bought 6 pounds of potatoes at the supermarket for $15. Herman thinks he got