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
Grace [21]
4 years ago
5

Solve the following system of equations using the elimination method. 2x + 4y = 10 –2x + y = –15

Mathematics
2 answers:
Vera_Pavlovna [14]4 years ago
8 0

(7, - 1 )

Step-by-step explanation:

Given the 2 equations

2x + 4y = 10 → (1)

- 2x + y = - 15 → (2)

Adding the 2 equations term by term eliminates the term in x, that is

5y = - 5 ( divide both sides by 5 )

y = - 1

Substitute y = - 1 into either of the 2 equations and solve for x

Substituting into (1)

2x + 4(- 1) = 10

2x - 4 = 10 ( add 4 to both sides )

2x = 14 ( divide both sides by 2 )

x = 7

Solution is (7, - 1 )

pychu [463]4 years ago
6 0

Answer:

(7, - 1 )

Step-by-step explanation:

Given the 2 equations

2x + 4y = 10 → (1)

- 2x + y = - 15 → (2)

Adding the 2 equations term by term eliminates the term in x, that is

5y = - 5 ( divide both sides by 5 )

y = - 1

Substitute y = - 1 into either of the 2 equations and solve for x

Substituting into (1)

2x + 4(- 1) = 10

2x - 4 = 10 ( add 4 to both sides )

2x = 14 ( divide both sides by 2 )

x = 7

Solution is (7, - 1 )

You might be interested in
Find the area of the polygon. 32 m 20 m 16 m 40 m he area of the polygon is square meters.​
jenyasd209 [6]

Answer:

Step-by-step explanation:

4 0
3 years ago
Apply the distributive property to simplify the expression-4(5x +2)
Sedaia [141]

Answer:

−20x − 8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Subtract 5 from 1/3 of 23
WARRIOR [948]
The answer is 2.8. or around there

5 0
3 years ago
Read 2 more answers
a group of students arrange a picnic each student contributed rupees 61 1 upon 2 the total contribution was rupees 676 1 upon 2
IrinaVladis [17]

Answer:

Now, each student contributes= Rs 61 1/2= Rs 123/2 ( mixed fraction ).

Therefore, total no. of students=Rs (1953/2÷123/2) = 15.87

Rounding off 15.87 to 16.

There were 16 students

(i hope it is correct answer. pls mark as brainliest)

8 0
3 years ago
Read 2 more answers
Point XXX is located at (3, 2)(3,2)left parenthesis, 3, comma, 2, right parenthesis. Point YYY is located at (3, -8)(3,−8)left p
NeX [460]

Answer:

10

Step-by-step explanation:

Given that:

Point X = (3, 2)

Point Y = (3, - 8)

Distance of point X to Y:

Distance = √(x2 - x1)^2 + (y2 - y1)^2

X1 = 3 ; y1 = 2 ; x2 = 3 ; y2 = - 8

Distance = √(3 - 3)^2 + (-8 - 2)

Distance = √(0)^2 + (-10)^2

Distance = √0 + 100

Distance = √100

Distance = 10

7 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify the following equation: (5 + 3)²​
    10·2 answers
  • Roberto’s cat weighed 6 3/4 pounds last year.Then the cat gained 1 1/2 pounds.How much does the cat weigh now?
    14·1 answer
  • Find sin x if cos x= 2/3 and x is in quadrant 4
    11·2 answers
  • 3.7m∧5÷3.7m∧2 How do I complete this expression?
    14·2 answers
  • Help with figuring out the answer.​
    13·1 answer
  • What to know for geometry flvs module 3 DBA?
    6·1 answer
  • WILL MARK BRAINLIEST!!!!!
    15·2 answers
  • Pls...Solve n + 8 < - 9
    13·2 answers
  • List 21.3 ib 2064 g 16.7 kg 452 oz from least to greatst
    11·1 answer
  • Simplify cubed 5 -10/27
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!