3 years ago

Slove the system Of Linear Eqitions by Elimination 3x-y=0 2x+y=-10

Mathematics

1 answer:

Arlecino [84]3 years ago

5 0

Answer:

Step-by-step explanation:

Given the simultaneous equation

3x-y=0 ... 1

2x+y=-10 ... 2

Add both equations to eliminate y

3x + 2x = 0 - 10

5x = -10

x = -10/5

x = -2

Substitute x = -2 into 1

3(-2)- y = 0

-6 - y = 0

-y = 0+ 6

-y = 6

y = -6

<em>Hence the coordinate (x, y) is (-2, -6)</em>

You might be interested in

Zack had a grade of 90% on his geography test. If there were 70 points possible on the

sasho [114]

Answer:

63 points

Step-by-step explanation:

70(.9)

7 0

3 years ago

Read 2 more answers

25 penalties decreased by 32% is __penalties.

jekas [21]

If you decrease something by 32%, you are left with 68%

0.68(25) = 17

3 0

3 years ago

Read 2 more answers

The temperature on Monday night was 34 degrees below zero. It rose 7 degrees at sunrise. By noon is rose 17 more degrees. At sun

Mekhanik [1.2K]

Answer:

-14°

Step-by-step explanation:

So we start at -34°. It rose 7°, so the temperature becomes -27°. It rose again by 17° so now it's -10°. It fell by 4° so by Tuesday night, the temperature is -14°

4 0

3 years ago

The area of a rectanglelur shaped living room was 240 sq.Ft.The lingest side of the room was 20 ft. What is the length of the sm

elena-14-01-66 [18.8K]

The short side of the room is 12 ft.

7 0

3 years ago

Work out the area of the shaded shape.

CaHeK987 [17]

The answer would be 61m^2

5x11=55
8-5=3
11-9=2
2x3=6
6+55=61

and since it is the area it is squared
hope this helps

5 0

2 years ago