Patrickdeshawns Patrickdeshawns

18-11-2014
Mathematics

contestada

Two times a number plus three times another number number equals 13.
The sum of the two numbers is 7 . What are the numbers

Respuesta :

18-11-2014

[tex]x-\ first\ number\\y-\ second \ number\\\\ 2x+3y=13\\ x+y=7\ \ -->\ \ x=7-y\\\\ 2(7-y)+3y=13\\ 14-2y+3y=13\\ 14+y=13\\ y=-1\\ x=7+1=8\\\\ Numbers\ are\ -1\ and\ 8.[/tex]

Answer Link

Otras preguntas

James thinks of two numbers. He says “The Highest Common Factor (HCF) of my two numbers is 3 The Lowest Common Multiple (LCM) of my two numbers is 45” Write dow

A. Increased shoot and leaf growth and increased photosynthesis B. Accelerated CO2 uptake by leaves and increased transpiration rate C. Decreased water uptake a

Solve for x: 3.2x - 7.4 = -7.8x + 3.6 1. 1 2. 0.8 3 3.8 4. 0.5

Which of the following would have resulted from the functions of prokaryotes on early Earth? more carbon became present in Earth's soil more nitrogen gas became

A pregnant mother should have at least how much folic acid daily?

how was the rise of the new type of producer( Lieber and Stoller, Phil Spector, Brian Wilson) dependent on and a product of the brill building model?

Two less than the product of a number and -5 is-42

how do we calculate on sixth of 42

what would be a good affect of a mutation

Which summary correctly describes the second half of Antigone? 1. Haemon and Creon get into an argument and have a huge falling out. Haemon decides to leave The