3 years ago

How do I solve x-y=11 2x+y=19

Mathematics

2 answers:

Margarita [4]3 years ago

5 0

marta [7]3 years ago

3 0

Answer: X = 10 and Y = -1

Step-by-step explanation:

X - Y = 11

X = 11 + Y (plug into the other equation)

2X + Y = 19

2 ( 11+Y ) + Y = 19

22 + 2Y + Y = 19

22 + 3Y = 19

-22 -22

————————-

3Y = -3

Y = -1 (plug into the original formula)

X - Y = 11

X - (-1) = 11

X + 1 = 11

-1 -1

—————

X = 10

You might be interested in

if the total precipitation (rainfall and snow) for the year at a mountain town is expected to be 37.9 and it has already rained

zimovet [89]

Answer:

11.08 inches of precipitation expected.

Step-by-step explanation:

subtract 37.9 by 26.82 since you want to know how much precipitation is left.

3 0

3 years ago

plz help me suzy spent 6 7/8 days working on her English paper 3 1/6 days on her science project and 1 1/2 days studying for her

malfutka [58]

Answer:

English time + Math Time = 6 7/8 + 1 4/8 = 7 7/8+4/8 = 8 3/8

8 3/8 - Science time = difference = 8 3/8- 3 1/6 = 5 5/24

She spent 5 5/24 days more on her English and Math test than Science

Step-by-step explanation:

5 0

4 years ago

As a pendulum swings the angle theta that it makes with the vertical changes through its swing. The force of gravity pulling on

Sergio [31]

B. 0.049sqrt 2-sqrt2 N

6 0

3 years ago

Read 2 more answers

How do I solve equations like this?

amid [387]

Can u state the problem it is very blurry thx

7 0

4 years ago

4m-3(m +2) what is the answer step by step

pishuonlain [190]

Answer:

-1m-6

Step-by-step explanation:

1. Multiply -3*m = -3m

2. Multiply -3* 2 = -6

3. Combine like terms : 4m + -3m = -1m

4. -1m - 6

5 0

3 years ago