02-11-2016
Mathematics

contestada

-x+2y=9
-7x-2y=-1
Solve each system by elimination

Respuesta :

03-11-2016

x - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me

Answer Link

Otras preguntas

Lement of medium scale map

What is Biology and what are the branches of biology?

2. What is intrusion?

Which aspect of a chemical reaction is affected by enzymes? a rate b pH c equilibrium d direction help ASAP

analyse monthly average minimum and maximum temperatures of Panaji (Goa) in the given tablemonth minimum°c maximum°cJan 32 19

A swimmer dives to 65 feet below the surface of the ocean. Write the integer that represents the depth of the dive

g−9=−19 What does g=???

Evaluate-32 + (2 – 6)(10) The answer is -49

Which of these sets of words impact tone in this passage? see passage below A) oppressive, drag, chore B) school, sense, classical C) huge, overflowing, relat

Hier soir Noémie décrit sa soirée d'hier à son ami Patrick. Mettez les verbes entre parenthèses au passé composé. Hier soir, je/j (blank) (aller) dîner au resta