Booseckgrewski Booseckgrewski

24-11-2016
Mathematics

contestada

which ordered pair is a solution to the system?
{x+4y=19
{y=-2x-4

a) (-5, 6)
b) (-2, 0)
c) (3, 4)
d) (7,3)

Respuesta :

26-11-2016

The solution is A. (-5,6)

Answer Link

HomertheGenius HomertheGenius

26-11-2016

x + 4 y = 19
y = - 2 x - 4
------------------
x + 4 * ( - 2 x - 4 ) = 19
x - 8 x - 16 = 19
- 7 x = 29 + 16
- 7 x = 35
x = 35 : ( - 7 )
x = - 5
y = 10 - 4
y = 6
Answer:
A ) ( - 5 , 6 )

Answer Link

Otras preguntas

Find the quotient: 8 ÷ 0.5

What's 18 1/2 subtracted by 17 1/4

In which of the following periods of the Mesozoic Era did the first dinosaurs and flying reptiles appear? A. Triassic B. Jurassic C. Cambrian D. Cretaceous

Which best models a plane ? A. a floor B. A pebble C. a jump rope D. a stick

You should spend equal time in a warm-up and a cool down. How long should you spend in each? A)Five to 10 minutes B)Three to four minutes C)One minute

what was machu pitchy

4 socio economic factors that could be considered for career and study choices

You know that 52% of a number, x, is 65. You also know that 26% of a number, y, is 39. What are the values of x and y? Which number is greater? Ex

What is an amorphous solid (hint: lollipops)?

The understanding, acceptance and celebration of differences among people is called ______. a. Stereotyping b. Etiquette c. Diversity d. Arbitration