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
yulyashka [42]
2 years ago
12

I dont know the answer to this question I dont know what I can put for the x and the y

Mathematics
2 answers:
harina [27]2 years ago
5 0

Answer:

  (x, y) = (-4, 4)

Step-by-step explanation:

You find the values of x and y by working the problem using any of the methods of solving simultaneous equations that you have been taught.

Here, you observe that the y-coefficients are the same in each equation. That means you can cancel the y-terms by subtracting one equation from the other.

  (7x +6y) -(4x +6y) = (-4) -(8)

  3x = -12 . . . . simplify

  x = -4 . . . . . . divide by 3

Now, you can substitute this into either equation to find y.

 4(-4) +6y = 8

  6y = 24 . . . . . . . . add 16

  y = 4 . . . . . . . . divide by 6

The solution to this system of equation is ...

  • x = -4
  • y = 4
vivado [14]2 years ago
3 0

<u>Answer:</u>

  • x = -4
  • y = 4

<u>Solution:</u>

  • => 7x + 6y = -4

             4x + 6y = 8

  • => 3x = -12
  • => x = -4

<u>Now, let's substitute the value of x into an equation to find the value of y.</u>

  • 7x + 6y = -4
  • => 7(-4) + 6y = -4
  • => -28 + 6y = -4
  • => 6y = -4 + 28
  • => 6y = 24
  • => y = 4

<u>Let's check our answer using the second equation.</u>

<u>Check:</u>

  • 4x + 6y = 8
  • 4(-4) + 6(4) = 8
  • => -16 + 24 = 8
  • => 8 = 8

Hence, this is proven correct.

Hoped this helped.

BrainiacUser1357

You might be interested in
would someone be able to explain to me how to solve these problems? I don't need the solutions, I just need an explanation. I ne
Leni [432]
The first 3  are examples of the difference of 2 squares so you use the identity 
a^2 - b^2 = (a + b)(a - b)
x^2 - 49 = 0 
so (x + 7)(x - 7) = 0
so either x + 7 = 0 or x - 7 = 0
giving x = -7  and 7.
Number 7 reduces to 3x^2 =12, x^2  = 4 so x = +/- 2
Number 8  take out GCf (d) to give 
d(d - 2)  = 0   so d = 0 ,  2
9 and 10 are more difficult to factor
you use the 'ac' method  Google it to get more details
2x^2 - 5x + 2
multiply first coefficient by the constant at the end 
that is 2 * 2 =  4
Now we want  2 numbers  which when multiplied give + 4 and when added give - 5:-    -1 and -4  seem promising so we write the equation as:-

2x^2 - 4x - x + 2 = 0

now factor by grouping 
2x(x - 2) - 1(x - 2) = 0

(x - 2) is common so

(2x - 1)(x - 2) = 0
and 2x - 1 = 0 or x - 2 = 0  and now you can find x.

The last example is solved in the same way.


8 0
3 years ago
Help :rewrite 2.267 repeating 67 as a simplifed answer
Evgen [1.6K]

Answer:

449/198  or 2 53/198

Step-by-step explanation:

2. 2676767 = x

10x= 22. 67676767

1000x= 2267. 676767

1000x-10x= 2267.676767- 22.67676767

  • 990x= 2245
  • x= 2245/990
  • x= 449*5/5*198
  • x= 449/198
  • x= 2 53/198

4 0
3 years ago
Check my work? I came up with 60 degrees. Let me know!
dalvyx [7]
90 minus 32 is 58! You were off by two degrees:)
3 0
3 years ago
Read 2 more answers
Which line best represents the line of best fit for this scatter plot?
oksano4ka [1.4K]

Answer:

B- Line Q

Step-by-step explanation:

Line Q is practically in the middle of the dots. It is called a trend line btw. :)

7 0
2 years ago
Read 2 more answers
Someone help me with this question!
VMariaS [17]

Answer: 160^{\circ}

Step-by-step explanation:

By the exterior angle theorem,

4x-14+5x-182=5x-100\\\\9x-196=5x-100\\\\4x=96\\\\x=24\\\\\implies m\angle BCD=20^{\circ}\\\\\implies m\angle BCA=160^{\circ}

6 0
1 year ago
Read 2 more answers
Other questions:
  • Caleb bought 6 packs of pencils for $12
    14·1 answer
  • Joan decided to look at new SUVs.Joan found a used SUV for$6000.Joan found that she paid 25% of the price of a new SUV . How muc
    8·1 answer
  • What is 241.5 divided by 14 rounded to the nearest tenth
    13·1 answer
  • Please help me! I will give brainliest and 50 points if all correct!
    12·1 answer
  • Help me PLEASEEEE im giving out brainly to the earliest and best one :D
    13·1 answer
  • Help please, I'll give brainliest to the first correct answer​
    5·1 answer
  • PLEASE HELP! FOR 10 POINTS. CLASSIFY THE TRIANGLE ON ANGLE AND SIDE LENGTH, WHAT IS THE ANSWER AND HOW CAN I SOLVE IT? SHOW UR W
    10·1 answer
  • Help please I’ll give brainliest
    6·2 answers
  • Jose wants to pay off his credit card balances within 18 months. He is trying to decide if he should use his $1,750 in
    9·2 answers
  • My divisor is 4/7 and my quotient is 7/24. what is the dividend
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!