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
What is the equation of the line x–3y=18in slope-intercept form?
masha68 [24]

Answer:

the answer would be done like this

Step-by-step explanation:

you have to get y by itself so you would need to move the x to the right of the equal sign

once you move anything to the opposite side it switches, so positive becomes negative vice versa

-3y=-x+18

you need to make sure you have positive 1 y so you would divide y by -3 to make it 1

everything else is multiplied by -3 as well

so the answer would be y=⅓x-6

3 0
2 years ago
Read 2 more answers
HELP WILL GIVE YOU Brainiest!!!
Phoenix [80]

Answer:

Step-by-step explanation:

So there we have it, <A=135° and <B=45°. This should check when you add them together ("<A and <B are supplementary which means that together their angles equal 180°"). Does 135°+45=180°?     YES!

I Really hope it helps

8 0
2 years ago
Which graph represents all of the solutions of 3n–15≤ -3?
swat32

Answer:

B.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Help quick please
GaryK [48]

Answer:

Growth

Step-by-step explanation:

since the (1.05) is bigger than 1 it is growth but if it was lower then  1 it would be decay .

3 0
2 years ago
76 % of 150 calculate this
IrinaVladis [17]
76% of 150 would be 114 I think I’m not to sure tho
4 0
2 years ago
Other questions:
  • Need help use screenshot(SAT Prep) In △ABC, AB = BC = 20 and DE ≈ 9.28. Approximate BD. bd equals?
    15·1 answer
  • Find the area of the composite shape shown below
    15·1 answer
  • Which is the focus of a parabola with equation y^2=4x
    11·2 answers
  • The APR of Caesar's savings account is 3.6% and interest is compounded monthly the principal and Cesar savings account with $6,6
    13·2 answers
  • What is the probability that a card drawn randomly from a standard deck of 52 cards is a red eight Express your answer as a frac
    8·1 answer
  • What is the equation of a line that has a slope of 2 and passes through the point (4,6) ?
    12·1 answer
  • Find the value of x and y in the parallelogram.
    5·1 answer
  • What is 2 divided 1/5
    8·1 answer
  • You stand 50 feet from a monument. The angle of depression from the top of the monument to your feet is 64 degrees. Approximatel
    7·1 answer
  • What is the measure of ABC?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!