kedance9118 kedance9118

25-01-2022
Mathematics

contestada

What is the solution to this system of equations?
X+y=1
2x - y = -10
O (3,4)
O (4,3)
O (-3,4)
O (3,-4)

Respuesta :

jimrgrant1 jimrgrant1

25-01-2022

Answer:

(- 3, 4 )

Step-by-step explanation:

x + y = 1 ( subtract x from both sides )

y = 1 - x → (1)

2x - y = - 10 → (2)

Substitute y = 1 - x into (2)

2x - (1 - x) = - 10 ← distribute parenthesis and simplify left side

2x - 1 + x = - 10

3x - 1 = - 10 ( add 1 to both sides )

3x = - 9 ( divide both sides by 3 )

x = - 3

substitute x = - 3 into (1)

y = 1 - (- 3) = 1 + 3 = 4

solution is (- 3, 4 )

Answer Link

Otras preguntas

Beall's is a chain of department stores that operates all over Florida. After serving Florida for 100 years, Beall's has learned that different merchandise is n

A card board box has a volume of 60 cubic feet give four different set of measurements that could be the dimension of the box

A factory is to be built on a lot measuring 150 ft by 200 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must

Jeremy is interested in buying ten new cars for his company. He likes a particular car that a salesperson shows him but expresses concern about the fact that th

I need help please ANSWER ASAP!!!!!!!!!!

What is the solution to the inequality? –4x – 8 > - 20 χ < 3 x > 3 χ > -3 χ < -3

What parts of muscle contraction are missing from the model? Describe why these parts are important to the muscle contraction process.

Which of these BEST describes a scientific variable?OA) a special type of experimentOB) the outcome of an experimentOC) a factor that may affect an experiment o

Single strands of nucleic acids are directional, meaning that there are two different ends. What functional groups define the two different ends of a strand?

Catherine enjoys relaxing while getting a manicure and pedicure at the Mystique Resort and Spa. She enjoys the attention and respect given to her by the staff.