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
Burka [1]
3 years ago
11

15. 3x – 4y = -1 5x + 2y = 7

Mathematics
1 answer:
never [62]3 years ago
8 0

Answer:

x = 1, y = 1

Step-by-step explanation:

3x - 4y = -1

5x + 2y = 7

If we multiply the whole second equation by 2, we get:

10x + 4y = 14

Adding this to the first equation:

10x + 4y + 3x - 4y = 14 - 1

13x = 13

x = 1

Applying this to the second equation:

5 (1) + 2y = 7

2y = 2

y = 1

You might be interested in
What is the value of one divided by zero?
Soloha48 [4]

Answer:

5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
(4 x 10) + (2 x 104)<br> Give your answer in standard form
Goshia [24]

Answer: =248x

Step-by-step explanation: Hope this help :D

Let's simplify step-by-step.

4x(10)+2x(104)

=40x+208x

Combine Like Terms:

=40x+208x

=(40x+208x)

=248x

7 0
3 years ago
Select all ratios equivalent to 3:2.<br><br> 2:12 18:14 27:18
Bess [88]

Answer:

27:18.

Step-by-step explanation:

27/9 = 3

18/9 = 2

8 0
3 years ago
Read 2 more answers
URGENT 15 POINTS!!!!What is the solution of the system?
ohaa [14]
The elimination method is a sufficient way to solve problems. 

2x+y= 20
6x-5y=12

Add 5y to the one equation.

2x+6y= 20
6x= 12

Subtract 2x from both sides. 

6y= 20
4x= 12

Divide 6 by 20. 
y= 3.3 

Divide 4 by 12.
x= 3

I hope this helped you!

Brainliest answer is appreciated!
8 0
3 years ago
Read 2 more answers
Approximately how many degrees are in the measure of an interior angle of a regular seven sided polygon
kramer
The interior angle of a regular polygon is equal to each other since all sides of the polygon are congruent. The formula that expresses the relation of the sides of the polygon and the measurement of the interior angle is (n2)*180/n where n is 7. Each interior angle then measures 128.6 degrees.
3 0
3 years ago
Other questions:
  • Help please, 25 points
    15·1 answer
  • What is the area of triangle LMN?
    15·2 answers
  • Help.....................
    15·1 answer
  • Is 1 over 3 irrational or rational?
    5·2 answers
  • Fatima opened a savings account with $7,500. She decided to deposit that same amount semiannually. This account earns 3.975% int
    7·1 answer
  • What is the area of the triangle? Please help
    7·1 answer
  • identify the first four numbers in an arithmetic sequence modeled by the formula below. a1 = 10 an = an-1+5
    6·1 answer
  • Pls help! In the figure below, m∠ABC = 57 degrees and m∠DAB =116 degrees. What is m∠ABC?
    15·2 answers
  • ogether Brianna and Hushley saved $336 for their trip to France. Hushley saved $120 more than Brianna. How much money did Briann
    11·1 answer
  • Whcih choice best describes the group this shape belongs in, based on the kinds of sides and angles it has? Angela chose A as th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!