BrownieWuver BrownieWuver

02-02-2015
Mathematics

contestada

How many solutions are there to the following system of equations?

4x – 14y = 6
–2x + 7y = –3

A.
1

B.
2

C.
infinitely many

D.
0

Respuesta :

02-02-2015

[tex]4x-14y=6 \\ -2x+7y=-3 \ \ \ |\times 2 \\ \\ 4x-14y=6 \\ \underline{-4x+14y=-6} \\ 4x-4x-14y+14y=6-6 \\ 0=0 \\ always \ true \\ \\ \boxed{\hbox{infinitely many solutions}} \Leftarrow \hbox{answer C}[/tex]

Answer Link

Otras preguntas

Which group on the Periodic Table has elements with atoms that tend not to bond with atoms of other elements? (1) Group 1 (3) Group 17 (2) Group 2 (4) Group 18

In a free market, supply and demand determines?

What is the reaction of lead with sulphuric acid

In which of the following countries did Mussolini fight Selassie for control? Egypt Italy Ethiopia

A square patio has an area of 215 square feet. How long is each side of the patio to the nearest 0.05

What is the name of the binary compound that has the formula CaO? A. calcium oxide B. calcium oxalate C. calcium peroxide D. calcium peroxalate

What is the number? When I add 13 to it, the result is 9 less 32

The Emperor Kangxi was generally a. opposed to arts and scholarship. b. tolerant of Christian missionaries. c. lazy and unskilled. d. unable to calm unrest

what is the answer to 3b+b+6

Which relationship can best be described as causal? (1) The alarm goes off and the sun rises. (2) The car is moving slowly and the driver is singing. (3) The sn