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
spin [16.1K]
3 years ago
10

Solve by elimination. 5x-7y=19 7x-7y=-7

Mathematics
1 answer:
SVEN [57.7K]3 years ago
4 0

Answer:

(x,y)=(-13,-12)

Step-by-step explanation:

5x - 7y = 19

7x - 7y = -7  Multiply both sides of the equation by -1

Which then gives you :

5x-7y=19  Sum the equations vertically to eliminate  

-7x+7y=7                 at least on variable

-2x=26      Divide both sides of the equation by -2

X=-13       Substitute the given value of x into the equation 7x - 7y =-7

7 x(-13)-7y=-7 solve the equation for y

y=-12

Thus gives you (-13,-12)

Hope this was useful!!! Sorry if it's wrong.

You might be interested in
I need help with this, pls help
Alex

Answer:

Step-by-step explanation:

why

4 0
2 years ago
200 divided by 5.50 is what because if one hour is 5.50 and you need 200 how many hours do you work
Phoenix [80]

Answer:

if you divided 200 by 5.50 the answer will be 36.3636363636

8 0
2 years ago
What is 2x+5=y and 5x+4=y pls hurry
Sergeu [11.5K]

Answer:

( 1/3, 5 2/3) Or (0.33, 5.66)

Step-by-step explanation:

If you graph the 2 equations and see where they intersect, they will land on the answer.

4 0
3 years ago
Evaluate the expression
Marrrta [24]
The answer would be 16

11 + (8-3)^2 - 20 = 16
3 0
2 years ago
The side lengths of a triangle are 12, 14, and x units
Orlov [11]

Answer: x=14

Step-by-step explanation: have a good day

6 0
2 years ago
Other questions:
  • Kelly invested $1,500 in the stock market on January 1. She lost 1/3 of it by the end of January and 2/5 of the remaining amount
    6·1 answer
  • What is an integer between the square root of 30 and 4*Pi divided by 3
    13·1 answer
  • Please help? (03.04) What are the coordinates of the vertex for f(x) = x^2 + 4x + 10?
    10·1 answer
  • What is 75% of 16 pieces?
    8·2 answers
  • What is the theoretical probability of choosing a consonant? Show work.
    9·1 answer
  • Why does domain not include a zero
    15·1 answer
  • Below is a table of revenue and cost, in thousands of dollars, of a business. Use the best fit line to estimate the number of mo
    12·1 answer
  • If a car travels at a uniform speed at 72 kilometers per hour, how many kilometers does it travel in 15
    8·1 answer
  • Which expression is equivalent to 4^7 x 4^-5​
    5·1 answer
  • Whats reciprocal of 4 1/4
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!