What is the solution to the system of equations? -2x+y=-5 3x - 2y= 12 A) (3, 1) B) (6,3) C) (-2,-9) D) (-2,-1)​

The answer is c

Step-by-step explanation:

c

Step-by-step explanation:

Solution by substitution method

-2x+y=-5

2x-y=5

and 3x-2y=12

Suppose,

2x-y=5→(1)

and 3x-2y=12→(2)

Taking equation (1), we have

2x-y=5

⇒y=2x-5→(3)

 Putting y=2x-5 in equation (2), we get

3x-2y=12

3x-2(2x-5)=12

⇒3x-4x+10=12

⇒-x+10=12

⇒-x=12-10

⇒-x=2

⇒x=-2→(4)

Now, Putting x=-2 in equation (3), we get

y=2x-5

⇒y=2(-2)-5

⇒y=-4-5

⇒y= -9

∴y=-9andx=-2

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

11 feet 6 inches and 8 feet 6 inches