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
Nitella [24]
3 years ago
5

3x - 5y = 14 and – 2x + 2y = 0

Mathematics
1 answer:
zubka84 [21]3 years ago
7 0

Answer:

x=5.6

y=-5.6

Step-by-step explanation:

3x - 5y = 14 Equation 1

– 2x + 2y = 0 Equation 2

Simultaneous equation can be solved either through elimination method or substitution method. But we use elimination method for this question

Multiply equation 1 by -2 (the coefficient of x in equation 2) and multiply equation 2 with 3 (the coefficient of x in equation 1), so that x will have the same coefficient in the new equations, and easy to eliminate

-2(3x - 5y = 14)

-6x+10y=-28 Equation 3

3(– 2x + 2y = 0)

-6x+6y=0 Equation 4

Subtract equation 4 from 3 to eliminate x

-6x+10y=-28

-6x+6y=0

-6x-(-6x)=-6x+6x=0

10y-6y=5y

-28-0=-28

5y=-28

y=-28/5

y=-5.6

Substitute for y in equation 2

– 2x + 2y = 0

– 2x + 2(-5.6) = 0

-2x-11.2=0

-2x=11.2

x=-11.2/2

x=5.6

You might be interested in
Please help me on this question
Tasya [4]
I think Its C because in the frequency table or table given if the heads are counted there are 6 of them and over all 10 which will make 6/10
7 0
3 years ago
How do I solve -12+1/2x=-6​
dedylja [7]

Answer:

x = 12

Step-by-step explanation:

First, eliminate the fractional coefficient 1/2, by multiplying all three terms by 2:

-24 + x = -12

Adding 24 to both sides isolates x:  x = -12 + 24, or x = 12

6 0
2 years ago
can the area of a square be expressed as a prime number if its side length is expressed as a natural number?
Lerok [7]

not possible because the area of a square is always a square of it's length and a square cannot be a prime number

7 0
3 years ago
Read 2 more answers
Dierdre’s work to solve a math problem is shown below.
kramer

Step-by-step explanation:

step 1

6 0
3 years ago
Read 2 more answers
Algebra II help I'm struggling
Dmitry [639]
Answer is B

total cost = $30 + 0.5 *(miles driven)
.................
7 0
3 years ago
Other questions:
  • Write a function rule for the table
    15·1 answer
  • Solve the exponential equation: 73 – 2x = 7–x
    11·1 answer
  • Please help, its for math, picture is attached with question
    12·1 answer
  • Here are the numbers on a table that shows student's scores for 10 rounds of a video game.
    10·2 answers
  • How many times does 8 go into 9
    7·2 answers
  • Which of the following sets of numbers could not represent the three sides of a triangles?
    8·1 answer
  • What is the volume of a cylinder with a height of 2 feet and a radius of 6 feet? Use 3.14 for pi. Enter your answer in the box.
    12·2 answers
  • These triangles are congruent by the triangle congruence postulate [?]
    12·1 answer
  • Hii i’ll give brainliest please help thanks :)
    9·2 answers
  • Write equivalent fractions for 1/4,1/2,and 7/9 using the least common denominator.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!