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
kompoz [17]
2 years ago
13

Solve using system of equations by using elimination method for -5x+4y=2 ; 9x-4y=6

Mathematics
1 answer:
jek_recluse [69]2 years ago
6 0

Answer:

y = 3

x = 2

Step-by-step explanation:

-5x + 4y = 2

9x - 4y = 6

Sum both eq.

-5x + 9x = 4x

+4y - 4y = 0

2 + 6 = 8

then:

4x + 0 = 8

4x = 8

x = 8/4

x = 2

from the first eq.

-5x + 4y = 2

-5*2 + 4y = 2

-10 + 4y = 2

4y = 2 + 10

4y = 12

y = 12/4

y = 3

Check:

from the second eq.

9x - 4y = 6

9*2 - 4*3 = 6

18 - 12 = 6

You might be interested in
In a given amount of time, Jamie drove four times as far as Rhonda. Altogether they drove 125 miles. Find the number of miles dr
lbvjy [14]

Answer:

25

Step-by-step explanation:

Theres a ratio of 1:4

Where Jamie has driven 4 times as much as Rhonda

meaning that you can plug in values,  1:4=125

the 4 represents Jamie since she drove farther than rhonda

Rhonda drove 25 miles, and Jamie drove 100 miles

25(4)+25=124

8 0
2 years ago
Multiple all the coordinates by 1/5.
Andrew [12]

Answer:

(-1,2) , (2,-1), (2,-1) , (-2,1)

Step-by-step explanation:

-5 x 0.2=-1

5 x 0.2=1

10 x 0.2= 2

-10x 0.2=-2

6 0
3 years ago
D 5/3<br><br><br><br> Couldn’t fit in pic
labwork [276]

Answer:

B

Step-by-step explanation:

You can just move upper y equation and it will be:

6x+3(3x-5)=15

6x+9x-15=15

15x-15=15

15x=30

x=2

6 0
2 years ago
Read 2 more answers
Need this quickly!! im not good in math so .
oksano4ka [1.4K]
In algebra, symbols are used to represent numbers. Example: 5x=20 or 4x=24
5 0
2 years ago
Read 2 more answers
Julissa gave out an equal number of oranges to each of the 6 apartments on her floor. If she gave each apartment 5 oranges, how
larisa86 [58]

Answer:

30 oranges

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Hey can someone help me with this please! ( it’s for geometry class)
    10·1 answer
  • Need Help PLZ!!!!!!!!!
    10·1 answer
  • Evaluate the expression. Let g=3 h=9 4h+2g+4
    12·2 answers
  • Drey makes $10 an hour plus $15 an hour for every hour of overtime. Overtime hours are any hours more than 40 hours for the week
    8·1 answer
  • If a ship's path is mapped on a coordinate grid, it follows a straight-line path of slope 5 and passes through point (2, 3).part
    11·1 answer
  • Write an expression that represents the quotient of 24 and 3 plus x
    7·1 answer
  • Select all terms that apply to the shape
    7·1 answer
  • LEGF6 U] If you want to get information on how to become a forest ranger, you should write a
    8·1 answer
  • How can I divide 33 photos into two <br><br>groups
    10·1 answer
  • A, B and C are points on a circle.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!