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
zzz [600]
3 years ago
7

What's the solution for 2x 7y=2 x y=-1

Mathematics
1 answer:
Lerok [7]3 years ago
5 0
<span>Simplifying

(2x + -7y ) = 0

Multiply
(2x + -7y) * (x + y) </span><span>
(2x * (x + y) + -7y * (</span><span>x + y)) = 0
</span>((x * 2x + y * 2x) + -7y * (x + y)) = 0<span>

</span>Reorder the terms:
((2xy + 2x2) + -7y * (x + y)) = 0
((2xy + 2x2) + -7y * (x + y)) = 0
(2xy + 2x2 + (x * -7y + y * -7y)) = 0
(2xy + 2x2 + (-7xy + -7y2)) = 0<span>

Reorder the terms:
(2xy + -7xy + 2x2 + -7y2) = 0
</span>
<span>Combine like terms: 2xy + -7xy = -5xy
(-5xy + 2x2 + -7y2) = 0

</span>Solving -5xy + 2x2 + -7y2 = 0<span>

Solving for variable 'x'.

Factor a trinomial. 
(2x + -7y)(x + y) = 0
</span>



You might be interested in
David measures how many inches his tomato plant grows every week. What is the independent variable?​
Norma-Jean [14]

Answer:

It is tomato plant

Step-by-step explanation:

- The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable. - - - The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.

7 0
3 years ago
What is the correct meaning of the word gripe?<br> I’m dumb
ruslelena [56]

Answer: Complain

Step-by-step explanation:

Gripe- express a complaint or grumble about something, especially something trivial.

5 0
2 years ago
Read 2 more answers
The zeroes are quadratic functions<br> are 6 and -4 which of these could be the functons.
LenaWriter [7]

Answer:

6 is the answer of your question

4 0
2 years ago
Read 2 more answers
A quality control expert found 12 defective cell phones in a shipment of 75 cell phones, based on these results how many cell ph
mart [117]

Answer:

240 cell phones

Step-by-step explanation:

=12×1500

=18000÷75

=240

8 0
2 years ago
Explain how you can tell whether the sum of two integers is positive or negative, before adding them.
julsineya [31]

Answer:

The sum of any integer and its opposite is equal to zero. adding two negative integers always yields a negative sum. To find the sum of a positive and a negative integer, take the absolute value of each integer and then subtract these values.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Alvin is 13 years older than elga. the sum of their ages is 107. what is elga's age
    8·2 answers
  • mike and mandy bought the same item mike aid 15,000 mandy got a discount and paid 3,00 less how much of a discount did she get??
    9·2 answers
  • Type anything i will give you 15 points.
    13·1 answer
  • 10. Plot the means of all six groups on a class dot plot.
    10·1 answer
  • Select all the ordered pairs that are solutions to the equation 5x + 2y = -8
    13·1 answer
  • If C(m) = 0.50m + 30 represents the cost of renting a car, how many miles were driven if the cost is $130?
    5·1 answer
  • a rectangular lawn has a perimeter of 36 meters and a circular exercise run has a circumference of 36 meters which shape will gi
    5·1 answer
  • Select the equation that contains the point (4,7) and in which the slope equals 1​
    13·1 answer
  • 4y/5 - 14/15 = 3/4<br><br> The answer is 2, how?
    10·1 answer
  • Find the 9th term 1, 3/2, 9/4
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!