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
Kamila [148]
3 years ago
11

Urgent please help quick!!!

Mathematics
1 answer:
Radda [10]3 years ago
5 0

Answer:

x=-1\\y=-1

Step-by-step explanation:

5x+5y=-10\\3x-7y=4

Let's solve the first equation for either x or y. I'll do it for x.

5x+5y=-10

Begin by subtracting 5y.

5x=-5y-10

Now divide by 5.

x=\frac{-5y}{5}-\frac{10}{5}

Simplify:

x=-y-2

Now substitute x in the second equation for this value.

3x-7y=4\\3(-y-2)-7y=4

Distribute;

-3y-6-7y=4

Add 6

-3y-7y=4+6

Combine like terms;

-10y=10

Divide by -10.

y=\frac{10}{-10}\\ y=-1

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

Take this value of y and replace it in the first equation to find the value of x.

5x+5y=-10\\5x+5(-1)=-10\\5x-5=-10\\5x=-10+5\\5x=-5\\x=\frac{-5}{5}\\ x=-1

You might be interested in
−3x+6=39<br><br> What is the value of x?
s2008m [1.1K]

Answer:

x=-11

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which statement describes the graph of f(x)=Lx]-2 on [0, 3)?
lakkis [162]
I think it’s the second one I’m not sure :/
5 0
3 years ago
Read 2 more answers
Write the missing number<br> :)
iVinArrow [24]

Answer:

u did not show any answers sorry bud

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
At a dog park , there are 10 black dogs, 5 brown dog, 2 white dog, and 12 multi color dogs​
Sophie [7]
What question are you trying to ask?
5 0
3 years ago
Read 2 more answers
Find f(x) if it is known that f(x+3)=4x+12.
MArishka [77]

Solution:

we are given that

f(x+3)=4x+12

we have been asked to find f(x).

we can find the value of f(x) by re-writing the given function in the form of f(x+3) and thereafter we will replace (x+3) by x.

we can re-write the given function as below

f(x+3)=4(x+3)\\\\\Rightarrow f(x)=4x\\

Hence the expression representing f(x) is f(x)=4x+3.

8 0
3 years ago
Read 2 more answers
Other questions:
  • How do I find the value of b
    13·2 answers
  • a ladder that is 15 feet long reaches the window of a building 12 feet above the ground .Whaf is the distance from the base of t
    12·1 answer
  • The sum of two numbers is 92. Their difference is twenty. Find the numbers
    6·2 answers
  • How can the triangles be proven similar by the SAS similarity theorem?
    9·2 answers
  • 6x=12.7;x21 true or false
    9·2 answers
  • HeLp pLzZzZzZzZzZzZzZzZzZ
    7·1 answer
  • What is 3/4 of a Right Angle ?
    9·2 answers
  • The answer pls pls pls place
    10·1 answer
  • How do nurses utilize a quadratic equation and example
    14·1 answer
  • Solve please I’m trying to find out if it’s 1/20 or 5/4
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!