florindaperes1 florindaperes1

24-05-2016
Mathematics

contestada

-x - 7y = 18
4x + 7y = -30
How can you order a ladder?

Respuesta :

apologiabiology apologiabiology

24-05-2016

I can solve
add them equations

-x-7y=18
4x+7y=-30 +
3x+0y=-12

3x=-12
divide 3
x=-4
sub
-x-7y=18
-(-4)-7y=18
4-7y=18
minus 4
-7y=14
dividd e-7
y=-2

x=-4
y=-2
(-4,-2)

Answer Link

Otras preguntas

The legal status of american indian tribes is that of _______ . a. domestic dependent nations b. registered aliens c. state citizens d. federal citizens.

Individuals who are heterozygous for sickle-cell anemia have a greater resistance to a. malaria. b. diphtheria. c. cholera. d. typhoid fever. e. all of these.

the romans first code of law was established about: a: 15 B.C. b: 200 B.C. c: 450 B.C. d: 725 B.C.

why does Odysseus continue to taunt the Cyclops as he pulls away from the shore? What traits does he demonstrate through this behavior, and what are the consequ

The deepest level of processing of information in memory, emphasizing the meaning of the information being processed, is:

I cant figure out the mistake on #2. Please help?

Who was the first woman elected to congress ?

Which trigonometric ratios are correct for triangle ABC? Check all that apply. -sin(C) = -cos(B) = -tan(C) = -sin(B) = -tan(B) =

Which answer shows these decimals written in order from greatest to least? 23.697 23.72 22.8

In "From Tiger to Anansi," which best describes how Anansi manages to bring Snake to Tiger? A. He uses his wits and cunning. B. He uses his kindness and gene