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
Shtirlitz [24]
3 years ago
5

Solve the system using elimination. 5x + 8y = –29 7x – 2y = –67

Mathematics
2 answers:
san4es73 [151]3 years ago
5 0

Answer:

(x,y) =( -9,2)

Step-by-step explanation:

This pair of linear equations may be solved simultaneously by using the elimination method. This will involve ensuring that the coefficient of one of the unknown variables is the same in both equations.

It may be solved by substitution in that one of the variable is made the subject of the equation and the result is substituted into the second equation. Using the elimination method, multiply the second equation by 4, the result is

28x - 8y = -268

Add to the first equation given

5x + 28x + 8y - 8y = -29 -268

33x = -297

x = -297/33

= -9

substitute the value of x into  the first equation

5(-9) + 8y = -29

8y = -29 +45

8y = 16

y = 16/8

= 2

MA_775_DIABLO [31]3 years ago
3 0
First, multiply the second equation by 4 so that 8y can cancel out. Now you have
5x+8y=-29
and
28x-8y=-268
Add these equations to get 
33x=-297
Divide both sides by 33, and you have
x=-9
Now, simply solve for y by plugging it into an equation, and you have
y=2
The final answer is (-9,2)!
You might be interested in
Hexagonal chess is played on a regular hexagonal board comprised of 92 small hexagons in three colors. The chess pieces are arra
Nonamiya [84]

The sum of the measures of the interior angles of the chess board is equal to 720°.

<h3>What is a polygon?</h3>

A polygon can be defined as a two-dimensional geometric shape that comprises straight line segments and a finite number of sides. Also, some examples of a polygon include the following:

  1. Triangle
  2. Quadrilateral
  3. Pentagon
  4. Hexagon
  5. Heptagon
  6. Octagon
  7. Nonagon

<u>Note:</u> The number of sides (n) of a hexagon is 6.

In Geometry, the sum of the interior angles of both a regular and irregular polygon is given by this formula:

Sum of interior angles = 180 × (n - 2)

Sum of interior angles = 180 × (6 - 2)

Sum of interior angles = 180 × 4

Sum of interior angles = 720°.

Read more on sum of interior angles here: brainly.com/question/13293407

#SPJ1

8 0
1 year ago
Can you help me with 1 &amp; 3?
iVinArrow [24]
For 1 multiply both sides by 3 which gives you 3y-y=12. Then combine like terms 2y=12. Lastly divide both sides by 2 and you get y=6. And for 3 first multiply both sides by 4 which gives you 6y-32=y+8. After that combine like terms 6y-y-32=8. Now add the equation together 5y=40 and then divide by 5 and get y=8
5 0
4 years ago
Someone help me solve this and could you explain why too?
yulyashka [42]

Answer:

3.5

Step-by-step explanation:

Well its easiest to just plug in the answers and see like 2 times 3.5 is 7.

Another way is saying 7 divided by 2 is 3.5

then u check to make sure its the same for all the numbers.

Which it is because 21 divided by 6 is also 3.5 :)

5 0
3 years ago
PLEASE HELP!!! SHOW WORK!!!! Please do not take my points! Thank you!
Julli [10]
1.X=8 2.X= x=9
3. X=8
7 0
4 years ago
Read 2 more answers
HELP ME OUT PLEASE! ILL GIVE YOU 16 POINTS
WINSTONCH [101]

1.y-4.90 = 2.4(x-1) 2. 24x-10y= -25

Step-by-step explanation:

The point-slope form of an equation is written as ;

y-y₁ = m(x-x₁) where the focus is on the slope of the line and a point on the line.

In this case, y-4.90 = 2.4(x-1)

The standard form an equation is written as :

Ax+By=C ,where x and y are variables and A,B and C are integers.

In this case; 24x-10y= -25

Learn More

Point-slope intercept form of an equation; brainly.com/question/11016508

Keywords :point-slope, standard form, equation

#LearnwithBrainly

8 0
3 years ago
Other questions:
  • Carlos worked at a farmers market on 4 summer weekends.He worked 5 hours on Saturday and 4 hours on Sunday.How many hours did Ca
    5·2 answers
  • What is 6/51 written as a lowest term
    10·1 answer
  • Help please !!!!!!!!!!
    11·1 answer
  • A rectangular sandbox cover will be built to protect an area of 72 square meters. Which are possible dimensions of the cover? Ch
    12·2 answers
  • Where is the line of Reflection?​
    8·1 answer
  • What is the value of y
    11·2 answers
  • Which of the following sets of numbers could not represent the three sides of a
    8·1 answer
  • Hii this is geometry please help!!
    15·1 answer
  • Solve for x: −6 &lt; x − 1 &lt; 9
    8·1 answer
  • (01.06 LC)<br> Expand and simplify: (2x + 5y) (x - 3y) (5 points)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!