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
Cloud [144]
3 years ago
9

Solve 3x – ly= 11 and -2x – 4y=-26 by elimination

Mathematics
1 answer:
Ede4ka [16]3 years ago
7 0

Answer:

(5, 4 )

Step-by-step explanation:

Given the 2 equations

3x - y = 11 → (1)

- 2x - 4y = - 26 → (2)

Multiplying (1) by - 4 and adding to (2) will eliminate the y- term

- 12x + 4y = - 44 → (3)

Add (2) and (3) term by term to eliminate y

- 14x + 0 = - 70

- 14x = - 70 ( divide both sides by - 14 )

x = 5

Substitute x = 5 into either of the 2 equations and solve for y

Substituting into (1)

3(5) - y = 11

15 - y = 11 ( subtract 15 from both sides )

- y = - 4 ( multiply both sides by - 1 )

y = 4

solution is (5, 4 )

You might be interested in
The surface area of a cube is 400 millimeters what is the surface area of a similar cube that is larger by a scale factor of 3
yuradex [85]
Larger by 3 means that the legnths of the sides are larger by 3 times
so we have a cube that has area of 400
surface area=legnth times width times 6 since it is a cube and legnth=width
so
SA=w^2 times 6

6w^2=400
divide by 6
w^2=200/3
square root both sides
w=√(200/3)
so w is 3 times larger
(3w)^2 times 6 is new area

w=√(200/3)
(3√(200/3))^2 times 6=9(200/3) times 6=600 times 6=3600

answer is 3600 ml^2
3 0
3 years ago
If you have 5 tenths of a dollar, how much money do you have
horrorfan [7]
A tenth is 1/10.
5 tenths is 5/10.

5/10 is a fraction that can be made simpler, by dividing by 5, so that the fraction becomes 1/2.

1/2 is a half, so if you have a half a dollar, you have 50 cents.

Hope I helped. :)
8 0
3 years ago
Geometry help please!!
Nostrana [21]

Answer: 13

Step-by-step explanation:

Equilateral triangle means that all sides are equal

Soo

3x + 1 must be equal to 5x - 9

3x + 1 = 5x - 9

-2x = -10

x = 5

Substitute x as 5 into either side value

3(5) + 1 = 15 + 1 = 16

So, all sides equal 16

Which means that y + 3 also equals 16

y + 3 = 16

y = 13

7 0
3 years ago
Find the absolute value of -6/3/5
sashaice [31]
(|-6| / 3) / 5 = 0.4
6 0
3 years ago
Write 171 miles in 3 hours as a unit rate
strojnjashka [21]
You have to didve the numbers
6 0
3 years ago
Read 2 more answers
Other questions:
  • two numbers rational. between 0.3 and 0.4 express one as a decimal and fraction. explain why these numbers are rational
    10·1 answer
  • Write an equation of the parabola in vertex form.
    11·1 answer
  • Identify thenull hypothesis, alternative hypothesis, test statistic, P-value or critical value(s), then state the conclusion abo
    5·1 answer
  • If angle X and Y are complementary angles, which of the following must be true?
    11·1 answer
  • Choose the multiplicative inverse of 5/3
    9·1 answer
  • How do you solve for y in this equation 6x 2y=2?
    7·1 answer
  • A fair coin is flipped three times. Find the<br> probability of getting heads all three times.
    8·1 answer
  • The product of two numbers is 30 if one of the numbers is six over 11 what is the other number
    14·1 answer
  • Find the area of the parallelogram shown below and choose the appropriate result.
    5·1 answer
  • What is 3/16 as a long decimal
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!