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
saveliy_v [14]
3 years ago
14

Solve by the elimination method

Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0

There is one solution. The solution of the system is (9,-5)

Option A is correct.

Step-by-step explanation:

We need to solve the system of equations by elimination method

6x= 64+2y\\2x= -7-5y

Rearranging the equations:

6x-2y=64\,\,\,eq(1)\\2x+5y=-7\,\,\,eq(2)

Eliminating y to find value of x:

Multiply eq(1) by 5 and eq(2) by 2 and add both equations:

30x-10y=320\,\,\,\\4x+10y=-14\\--------\\34x=306\\x=\frac{306}{34}\\ x=9

So, value of x= 9

Eliminating x to find value of y:

Multiply eq(1) by 2 and eq(2) by 6 and subtract both equations:

12x-4y=128\\12x+30y=-42\\-\,\,\,\,-\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\---------\\-34y=170\\y=\frac{170}{-34}\\ y=-5

So, value of y = -5

There is one solution. The solution of the system is (9,-5)

Option A is correct.

Keywords: Solving system of equations

Learn more about Solving system of equations at:

  • brainly.com/question/13168205
  • brainly.com/question/2115716
  • brainly.com/question/3739260

#learnwithBrainly

You might be interested in
Mary has two job offers.
galina1969 [7]

Answer:

8h+100

8.50h+80

Step-by-step explanation:

7 0
2 years ago
The cheetah is the fastest land animal, capiable of attaining a speed of 110 km/h. In August 2009 , the world record for the men
lozanna [386]

Answer:

About 3 times faster

Step-by-step explanation:

Cheetah's speed = 110 km / hr

World 100m sprint record :

Speed of sprinter :

Distance / time

100 m / 9.58s

= 10.438413 m/s

Convert Cheetah's speed to m/s

110 km/hr = (110 * 1000)m / (60 * 60 s)

= 110000 m / 3600 s

= 30.55555 m/s

Number of times cheetah is faster than sprinter :

30.55555 m/s ÷ 10.438413 m/s

= 2.927 times

5 0
3 years ago
I'm designing a large container... Cost for the top is 10 per square foot... Sides is 2.50..... bottom is 15.... Container must
vovangra [49]

Answer:

41 sq feet

Step-by-step explanation:

7 0
3 years ago
Does someone mind helping me with this problem? Thank you!
Damm [24]

Using the Pythagorean theorem:

c = sqrt(8^2 + 7^2)

c = sqrt(64 + 49)

c = sqrt(113)

c = 10.6

7 0
2 years ago
Read 2 more answers
There are ___ questions on the ACT math test,<br> А. 75<br> В. 100<br> С. 80<br> D. 60
koban [17]

The answer is: D) 60

5 0
3 years ago
Other questions:
  • -0.46x+0.16x=6.6<br><br> Thank you!
    14·1 answer
  • Simplify the expression. (x1/8 y1/4)2
    11·1 answer
  • Zoya has to earn at least $300 to meet her fundraising goal. She has only 100 bracelets that she plans to sell at $5 each. Which
    5·1 answer
  • Just help me out ig, its not that hard its just my brain shutdown. Anyways, ill reward you with my robl ox username if you the k
    11·2 answers
  • Please help me on this will give you brainliest
    10·2 answers
  • Ghhhhhhjreffr76f7urfytfy6r
    5·1 answer
  • What is the vertex of a parabola represented by the equation f(x) = -2 (x-4)^2 - 7
    10·1 answer
  • Solve the proportion!
    8·1 answer
  • PLEASE HELP ME PRESS THE PHOTO ABOVE
    5·2 answers
  • Find the measure of L
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!