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
Arada [10]
3 years ago
5

-3x+3y=12 4x+2y=20 Please help its elimination. It's really hard I can't solve it

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0
-3x + 3y = 12<u /> ⇒ -12x + 4y = 48
 4x + 2y = 20 ⇒   <u>12x + 6y = 60</u>
                                   <u>-2y</u> = <u>-12</u>
                                    -2      -2
                                      y = 6
                          4x + 2(6) = 20
                            4x + 12 = 20
                            <u>       -12  -12</u>
                                    <u> 4x</u> =<u> 8</u>
                                      4     4
                                       x = 2
                                 (x, y) = (2, 6)
You might be interested in
Help math class someone explain this to meee!!??
Nookie1986 [14]
6 67 10 hope this help :)
6 0
2 years ago
Read 2 more answers
Solve 2 + 3ex + 2 = 7 for x. Please be quick
Ann [662]

Answer:

The answer is C. x=In(5/3)-2

Step-by-step explanation:

3 0
3 years ago
What two numbers have a sum of 217 and a <br> difference of 85?
Setler [38]

Answer:

the two numbers are 151 and 66

Step-by-step explanation:

x+y =217

x-y = 85

add the two equations

x+y =217

x-y = 85

-------------

2x = 302

divide by 2

2x/2 = 302/2

x = 151

now find y

x+y =217

151+y =217

subtract 151 from each side

y = 217-151

y =66

8 0
3 years ago
Convert 2000m to centimeters​
iragen [17]

Answer:

200,000cm

Step-by-step explanation:

1m = 100cm

2000m = ?

2000 × 100 = 200,000cm

5 0
3 years ago
Read 2 more answers
Jimmy spent 45 minutes to finish his homework. There are 20 problems. What is the average amount of time he spends to finish eac
nexus9112 [7]
The average is (time)/(number of problems)=(45/60)/20=(3/4)/20=3/80  hours per problem. In minutes, the answer would be 3/80*60=9/4 minutes per problem.
6 0
3 years ago
Other questions:
  • Solve for a side in right triangles can someone please answer its very urgent
    5·1 answer
  • Simplify (2√5+3√7)^2.
    9·2 answers
  • Estimates 879 times 8
    15·2 answers
  • What is 6x – 8 = 4 written as a system? y = 6x – 8 y = –4 y = 6x – 8 y = 4 y = –6x + 8 y = 4
    12·2 answers
  • Evaluate 1/6 + 2/3. a.1/5 b.3/18 c.5/6 d.1 1/6
    5·1 answer
  • Write a system of equations Nextel has an initial fee of $125 and charges $50 a month. AT&amp;T has an initial fee of $75 and ch
    10·1 answer
  • What is the measure angle c? <br> please show step by step
    15·1 answer
  • On one street in Samtredia, where the houses are numbered one after the other, live Yuza, Glonti and Ramin. There are three time
    9·1 answer
  • Find the unit rate.<br> 10 newspapers in 2 piles<br> =<br> newspapers per pile
    13·2 answers
  • A rectangular shaped pond is 16 meters long and 14 meters wide. The dimensions of a rectangular shaped lake nearby is 350%
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!