1answer.
Меню
Ask question
Login
Signup
Ask question
Menu
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
Answer
Comment
Send
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>
Send
You might be interested in
Please HELP!! Do not understand!!
Gekata [30.6K]
I think the answer is o.o416
6
0
2 years ago
Can anyone help me please i will give you 15 points
romanna [79]
Answer:
The answer is 17/20
Step-by-step explanation:
3
0
3 years ago
Does anyone know how to do this
Pie
Area = 1/2*h*c = 1/2*9,3*h = 29.8 yd^2
4,65*h = 29,8
h = 29,8/4,65
h = 6,40
4
0
2 years ago
Please help me with this question for pre-calculus
Pani-rosa [81]
Answer:
a and b
Step-by-step explanation:
6
0
3 years ago
In this diagram, what do the red tick marks Indicate?
stich3 [128]
Answer:
c
Step-by-step explanation:
6
0
9 months ago
Other questions:
Jimmy is about to pick a marble from the jar. How likely is it that he will pick a blue marble?
6
·
2 answers
Write a two column proof
13
·
1 answer
multiply or divide and then simplify (x+1)^2/(x-5)*(x-3)/(x+1) 3x+3/2 divided by 4/9x+9 4a/3a-3*3(a-1)/16a x+2/x-1 divided by 5x
10
·
1 answer
Missy rolls two 6 sided number cubes labeled 1-6. What is the probability that both number cubes land on a prime number
8
·
1 answer
Can you help me please
11
·
1 answer
What is the value of y?<br> E<br> (3y + 4) (5y-10)<br> A.)7<br> B.)5.5<br> C.)1.75<br> D.)6
7
·
1 answer
Find the slope of the line through<br> (-11,8),(-11, -17)
10
·
1 answer
I’ll make you brainlist thankss
13
·
1 answer
who ever gets all of these right will get 2 brainiest and a good rating and have a choice to be my friend.
12
·
2 answers
What is the slope of the two points below?<br><br> (9,-27) and (4,-12)
8
·
1 answer
×
Add answer
Send
×
Login
E-mail
Password
Remember me
Login
Not registered?
Fast signup
×
Signup
Your nickname
E-mail
Password
Signup
close
Login
Signup
Ask question!