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
beks73 [17]
3 years ago
6

Show and explain how replacing one equation by the sum of that equation and a multiple of the other produces a system with the s

ame solutions as the one shown. 8x + 7y = 39 4x – 14y = –68
Mathematics
1 answer:
telo118 [61]3 years ago
3 0

Answer:

(1/2, 5)

Step-by-step explanation:

8x + 7y = 39

-2(4x - 14y = -68)

-8x + 28y = 136

8x + 7y = 39

add the two equations together

35y = 175

y = 5

8x + 7(5) = 39

8x = 4

x = 1/2

You might be interested in
The graph of F(x) can be flipped over a certain line to produce the graph of its inverse. What is the equation of that line
Serhud [2]
The equation of that line is y=x.
5 0
3 years ago
Which method would you choose to solve the following system?
gladu [14]

Answer: combining like terms

Step-by-step explanation:

3 0
3 years ago
A cave explorer is at an elevation of negative 38 feet. The explorer starts moving at a rate of negative 12 feet per minute. Ide
Ksivusya [100]

Answer:

-38 - 12x < 200

Step-by-step explanation:

Given,

The original elevation = -38 feet,

Also, the explorer starts moving at a rate of negative 12 feet per minute.

So, the distance covered by explorer after x minutes = -12x feet,

Thus, the final elevation = original elevation +  distance covered by explorer

= -38 - 12x

According to the question,

final elevation < -200 feet

⇒ -38 - 12x < 200

Which is the required inequality.

8 0
3 years ago
Read 2 more answers
Can someone pls help
UNO [17]

Answer:


Step-by-step explanation:


8 0
3 years ago
4(-5.4) SHOW WORK PLS
Nana76 [90]

Answer:

-21.6

Step-by-step explanation:

-5.4    

x  4               4x 4=16 so you carry the one to 5x4= 20 + 1 that was carried

--------           keep it negative

-21.6

6 0
3 years ago
Other questions:
  • A quad with no square corners
    11·1 answer
  • Which number line shows the solution set for 18-201= 6?
    15·1 answer
  • Find a rational number that is between 5.2 and 5.5. explain why it is rational.
    8·2 answers
  • What two integers dors √7,fall between
    8·1 answer
  • Help me with these 2 questions please
    15·1 answer
  • 2. Two researchers, Beth and Frank, ask a random sample of teenagers whether or not they had
    12·1 answer
  • Math question pls help asap thxxu<br>question is in pic​
    14·1 answer
  • Please answer it is urgent.
    14·2 answers
  • I need correct answer plzz​
    11·1 answer
  • Antonia read an article that said 26\%26%26, percent of Americans can speak more than one language. She was curious if this figu
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!