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
Alex787 [66]
2 years ago
9

Solve the system: {4x-7y=30, 4x-5y=90

Mathematics
1 answer:
Lerok [7]2 years ago
7 0

Answer:

x=60, y=30

Step-by-step explanation:

4x-7y=30

4x-5y=90

Subtract the equations

4x-7y=30-4x-5y=90

=2y=60

Solve 2y=60

Divide both sides by 2

2y/2=60/2

Simplify;

y=30

For 4x-7*30=30 for x

4x-7y*30=30

Multiply the numbers:7*30=210

4x-210=30

Add 210 to both sides

4x-210+210=30+210

Simplify;

4x=240

Divide both sides by 4

4x/4=240/4

Simplify

x=60

The solutions to the system of equations are:

x=60, y=30

Hope this helped!!!

You might be interested in
Tell me quick and i will give thou brainliest
Anit [1.1K]

c, the answer is going by 3, so it is c.


7 0
3 years ago
Read 2 more answers
Lucas wants to prove that the base angles of any isosceles triangle are
Dmitrij [34]

Answer:

EG so that GF ≈ EF

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
I don’t understand what this means
Colt1911 [192]

Answer:

This means that if you have that amount of those and you do whatever the rest of the question is.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The temperature at 7 a.m. was -11°C. The temperature increased by 9°C during the
LiRa [457]
The answer is -6 degrees Celsius
6 0
3 years ago
PLEASE HELP, DUE IN 2 HOURS ((btw i would figure it out but i’m tired and too lazy, thanks!)) and i need question 1-3, all three
zlopas [31]

Answer:

THIS MIGHT HELP U ....

7 0
2 years ago
Other questions:
  • Which property of real numbers is illustrated by the equation (46 +32)+71=46+(32+71)?
    12·1 answer
  • PLEASE ANSWER THIS QUESTION !! 20 POINTS AND BRAINLIEST !!
    13·2 answers
  • Three fourths of the fans did not carry banners of 1000 fans attended game how many fans carried banners
    6·1 answer
  • Sin(25)/ 22 = Sin(B)/40<br><br> What is the measure of angle B?
    6·1 answer
  • 7x+9-13x+4 simplified
    8·1 answer
  • Find the greatest common factor 18 and 33
    14·2 answers
  • david bought a baseball card for $40. since then, the card has increased in value by 25%. what is the value of david's card now?
    8·1 answer
  • I need help please ASAP
    10·1 answer
  • Marsha swam 400 meters in 6<br> minutes and 12 seconds. Convert that time to minutes.
    8·1 answer
  • Help me pls, here you are.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!