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
vodomira [7]
3 years ago
10

Solve the following equations:2x-5y-4 x+6y=15​

Mathematics
1 answer:
Sauron [17]3 years ago
8 0

Answer:

x= 3

y= 2

Step-by-step explanation:

The given equations are :

2x-5y = -4    equation 1

x +6y = 15    equation 2

We will multiply the equation:2 by 2

2(x+6y=15)

2x+12y=30   equation 3

Lets call this equation:3

Now we will use the elimination method:

Subtract equation 3 from equation 1:

2x-5y = -4

2x+12y=30

_________

   -17y = -34

y= -34/-17

y = 2

Now put the value of y in any equation:

We will use equation 1

2x-5y = -4

2x-5(2)= -4

2x-10= -4

Move the constant to the R.H.S

2x= -4+10

2x=6

Divide both the terms by 2

x= 3

Therefore the solution set is (x,y){(3,2)}....

You might be interested in
Someone please help me on this question ?:)
katrin2010 [14]

Answer: The TV is 48 inches wide.

Step-by-step explanation: To find the solution to this equation we must use the Pythagorean theorem. The Py. Theo. is basically the formula :

a^2 + b^2 = c^2    You say this as "A squared plus b squared equals c squared"

To use this formula you must plug in the given values of a and b, to find c. A and b represent the two bases of the triangle, while c is the hypotenuse. In this equation we already have the value of c and a. We need to find b, but in order to do that we use a different formula. We use : c^2 - a^2 = b^2

See :

52^2 - 20^2 = b^2       *The ^2 means "to the power of" aka an exponent*

2704 - 400 = b^2     *When dealing with ^2, all you do is multiply the number by itself*

2304 = b^2      *Next, we find the square root of our current number.*

48 = b    

*Another way to solve this equation is to memorize all the Pythagorean Triples. With that knowledge, you wont even need to use the formula because you will already know all three values. I hope this helped you understand :)



3 0
4 years ago
Wade took 1/3 of brownies and cut 12 equal sizes what amount of the pan will each piece be.
IrinaVladis [17]

Answer: each 1/3 would be 4 brownies.

Step-by-step explanation: 12 divided by 3 is 4.

3 0
3 years ago
If some does the whole thing I will paypal you 10 bucks
8090 [49]

Answer:

bet send u it when im done

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Use four figure table to find sin 27.6°​
Tresset [83]

Answer:

The answer is 0.46947

Pls mark as brainliest and follow me

3 0
4 years ago
Find the area of a circle having a circumference of 231 pi units. Round to the nearest tenth.
loris [4]
Do you by any chance have a diagram of the circle or the r value?
7 0
3 years ago
Other questions:
  • Arrange the digits 1-9 in the 9 boxes to make three equivalent fractions,all equal to 1/2
    13·1 answer
  • Mark is in training for a bicycle race. He needs to ride 50 kilometers a week as part of his training. He rode 18.23 kilometers
    7·1 answer
  • Khan academy literally rejected my correct answer in all fraction form and I changed only the y-intercept to the decimal equival
    6·1 answer
  • Use the given nth term formula to compute the first five terms of the sequence.<br> an = 8n^2 − 4n
    14·1 answer
  • Which mathematical concept did you use to find the number of gumballs that fit INSIDE the package?
    12·1 answer
  • This diagram shows three small squares and two rectangles composed of 10 small squares.
    14·2 answers
  • Help me please I need the help
    15·1 answer
  • I need help with the number 27 and 28
    15·1 answer
  • Simplify the attached question​
    13·2 answers
  • Anyone please help me, deadline is tomorrow.༎ຶ‿༎ຶ wahhhhhhhh huhuhu​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!