Mathematics, 29.03.2020 23:19 domenica19

-20 + 4y = -8
-20 – 2y = 4
Find the solution to the system of equations shown above by graphing

Answers: 3

Show answers

Answers

Answer from: janisia10

The solutions are x=0 and y= -2, if the given equations are -20x+4y=-8 and -20x-2y=4 .

Step-by-step explanation:

The given is,

-20x+4y=-8 ...............................(1)

-20x-2y=4 .................................(2)

Step:1

To find the values of x and y, we subtract the equation (1) and (2)

-20x+4y=-8

-20x-2y=4

( - )

Subtraction of the Eqn (1) and (2) becomes,

(-20x+20x)+(4y+2y)=(-8-4)

6y=-12

$y =-\frac{12}{6}$

y = -2

Substitute the value of y in Equation (2),

-20x-2y=4

-20x-(2)(-2)=4

-20x+4=-4

-20x=4-4

-20x=0

x = 0

Step:2

Check for solution,

-20x+4y=-8

Substitute the values of X and y,

(-20)(0)+(4)(-2)=-8

0-8=-8

-8 = -8

Both sides are equal so the values of x = 0 and y = -2 are equal.

Result:

The solutions are x=0 and y= -2, if the given equations are -20x+4y=-8 and -20x-2y=4 .

Answer from: Quest

The correct answer would be "convenience"

Answer from: Quest

The answer it dorneo dodneurekd r egg rorne

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:20, bounce76

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext

Answers: 2

continue

Mathematics, 21.06.2019 19:30, osnielabreu

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Answers: 2

continue

Mathematics, 21.06.2019 21:00, nanda22

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

Answers: 1

continue

Mathematics, 21.06.2019 22:00, Tirone

Common binomial factor of 6x(3x+7)+5(3x+7)

Answers: 1

continue

You know the right answer?

-20 + 4y = -8
-20 – 2y = 4
Find the solution to the system of equations shown above by g...