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

Polyatomic ions a. are a result of ionic bonds. b. contain covalent bonds. C. contain both ionic and covalent bonds. d. are always charged. e. both band d.

You want it put edging around a rectangular flower garden that is 15 feet long and 12 feet wide. The edging comes in 3 foot pieces. How many pieces of edging do

Suggest possible explanations why reaction times are different for different people?

1. What event in the early-mid 20th century illuminated the tensions between Muslims and Hindus in India? The fall of the Berlin Wall The Great Depression The I

A grocery store sells sliced turkey. the graph show shows the relationship between the weight of the sliced turkey and the total cost of the sliced turkey

How is a dihybrid Punnett Square different from a monohybrid Punnett square?

The organelle that produces ATP

Which of the following spellings is correct for "a page at the beginning of a book?" A.Foreward B.Forward C.Foreword D.Foreworde

In the first 100 years after Mohammed is that how far did Islam spread ?

The length of a rectangle is three times width. If the perimeter of the rectangle is 40cm, find its length and width?