1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bixtya [17]
3 years ago
14

X + 2y = -3 x - y = -12

Mathematics
2 answers:
Nastasia [14]3 years ago
5 0

Answer:

x = -9, y =3

Step-by-step explanation:

x + 2y = -3

x - y = -12

Subtract to two equations to eliminate x

x + 2y = -3

-x + y = 12

---------------------

   3y = 9

Divide each side by 3

3y/3 = 9/3

y = 3

Now we can find x

x-y =-12

x - 3 = -12

Add 3 to each side

x-3+3 = -12+3

x = -9

Sunny_sXe [5.5K]3 years ago
5 0

Answer:

(-9,3)

Step-by-step explanation:

x + 2y = -3

x = -3 - 2y

x - y = -12

x = y - 12

-3 - 2y = y - 12

3y = 9

y = 3

x = 3 - 12

x = -9

You might be interested in
Kelly bought a computer that was 20% off the regular price of $1,060. If a 7% sales tax was added to the cost of the computer, w
fomenos

Answer: $ 1361.04

Step-by-step explanation:

Discount will be 1060 * 20% = 212

Sales price 1060 + 212 = 1272

Tax 7% = 89.04

Kelly paid 1272 + 89.04 = 1361.04

4 0
2 years ago
–2z − 7 need this done now
Debora [2.8K]

Answer:

the value of the z is -3.5

Step-by-step explanation:

According to the question, the following information is given

-2z - 7

Based on the above information

We assume that we have to determine the z value

so

-2z - 7 = 0

-2z = 7

z = 7 ÷ -2

= -3.5

Hence, the value of the z is -3.5

The same is to be considered and relevant too

5 0
2 years ago
Help with number 6 please?
Bad White [126]

Answer:

64

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What’s the calculation of the equation 5/8-1/4=
Kay [80]

Answer: 3/8

Explanation: To subtract unlike fractions such as 5/8 - 1/4, first find a common denominator. The common denominator of 8 and 4 will be the least common multiple of 8 and 4 which is 8.

Notice that our first fraction already has 8 in the denominator so it stays the same. To get 8 in the denominator of 1/4, we multiply the numerator and denominator by 2 to get 2/8.

Now we have 5/8 - 2/8.

To subtract like fractions, we simply subtract the numerators to get 3 and keep our denominator of 8 and we have 3/8.

Since 3/8 is in lowest terms, it's our final answer.

Therefore, 5/8 - 1/4 = 3/8.

4 0
3 years ago
Evaluate the function below for x = 3<br> F(x) = 2x2 - 4x +7
Nezavi [6.7K]
The answer is 7. So you would do
2(3)2=12
4(3)=12
12-12=0
0+7
7
3 0
3 years ago
Other questions:
  • What angle measures 3 degree
    7·2 answers
  • A car travels 120 miles in 3 hours (with a constant spee
    8·2 answers
  • Barb, Shelley, and Darcy are college roommates. Barb goes to the library every 6 days, Shelley goes the library every 7 days, an
    11·1 answer
  • (02.02 MC)
    10·2 answers
  • Sarah is unsure how long it will take her to save $50,000. She knows that she'll make an initial investment of $5,000. About hwo
    10·1 answer
  • I need help. PLEASE, I dont know what to do​
    6·1 answer
  • Describe the translation from the red figure to the blue figure
    14·2 answers
  • The Supremacy Clause makes what the
    5·1 answer
  • Ellis is going on a tour that costs $65 while on vacation. He was told to bring $118 to pay for the cost of the tour and dinner.
    11·1 answer
  • I’m a football game the home team scored 2 times as many points as the visiting team, if the game ended with a total of 21 point
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!