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
Monica [59]
10 months ago
11

I need help on solving these equations linear. Please helpppp

Mathematics
1 answer:
goldenfox [79]10 months ago
8 0

The solution of the first set of equations is x = 15 and y = 5 and the second is x = 14.25 and y = 7.75.

<h3>What is the equation?</h3>

There are many different ways to define an equation. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of 2 mathematical expressions.

More than one variable may be present inside a linear equation.

a)

As per the given first system of equation,

2x - 4y = 10

x + 5y = 40 → 2x + 10y = 80

Subtract both

10y + 4y = 80 - 10

14y = 70

y = 5

And, x = 40 - 5(5) = 15

b)

As per the given first system of equation,

3x - 5y = 4 and

-2x + 6y = 18 → -x + 3y = 9 → -3x + 9y = 27

Add both

-5y + 9y = 4 + 27

4y = 31

y = 7.75

x = (4 + 5(7.75))/3 = 14.25

Hence "The solution of the first set of equations is x = 15 and y = 5 and the second is x = 14.25 and y = 7.75".

For more about the equation,

brainly.com/question/10413253

#SPJ1

You might be interested in
PLEASE HELP ILL GIVE BRAINLIESTTTT
Yakvenalex [24]

Answer:

f(-3) = -2

f( 1 ) = - 1

If f(x) = -2, then x = 3

If f(x) = 2, then x = -5

Step-by-step explanation:

Looking at the graph, we can easily determine the value of the given functions.

f(-3) = -2 (This function basically asks, if x = -3, what is the value of y? In the graph, it shows that the value of y is -2).

f( 1 ) = - 1  (Similarly, this function  asks, if x = 1, what is the value of y? In the graph, it shows that the value of y is -1).

If f(x) = -2, then x = ?  ←← For this particular question, you're given the value of y = -2. All you need to do is look at the graph to see what is the value of x  given that y = -2. Even though it is not clearly labeled on the graph, it shows the value of x = 3 (it is right where the end arrow is located).

Therefore, If f(x) = -2, then x = 3.

If f(x) = 2, then x = ?  ←← Similar to the previous question, you're given the value of y = 2.  In the graph, one of the given points has the coordinates of (-5, 2). This gives you the value of x = -5.

Therefore, If f(x) = 2, then x = -5.

Please mark my answers as the Brainliest if you find my explanations helpful :)

3 0
2 years ago
The sum of two numbers is 20. One number is 4 less than the other. Find the numbers
exis [7]

Answer:8 and 12

Step-by-step explanation: 8 is 4 less than 12 and 12 and 8 equals 20

6 0
2 years ago
Help me with my math please
monitta

Answer:

Volume of a cylinder = πr²h

Given

V=81π

r=3

find h

Making h the subject

h= V/πr² = 81π/π(3)²

h= 81/9

h= 9cm

3 0
3 years ago
Read 2 more answers
The new printer at the school is able to print 2,700 pages in 45 minutes. On average, how many pages does it print per minute?
garri49 [273]

Answer:

It can print 60 pages per minute.

Step-by-step explanation:

You would divide 2,700 by 45, to get your answer. 2,700÷45=60. So your answer will be 60 pages per minute.

8 0
3 years ago
Read 2 more answers
Which is a solution for the equation 3x + 13 = 73?
sweet [91]

Answer:

x=20

Step-by-step explanation:

73-13=60

60÷3=20

7 0
3 years ago
Read 2 more answers
Other questions:
  • Help meee pleaseeeee
    14·1 answer
  • Fill in the blanks (ASAP- 40 points, must answer all)
    13·2 answers
  • Factorise y squared -9w squared
    6·1 answer
  • URGENT!!!!
    8·1 answer
  • A home’s value increases at an average rate of 5.5% each year. The current value is $120,000. What function can be used to find
    12·1 answer
  • 16 From her part-time job, Monika can earn a regular
    10·1 answer
  • Help, please :)<br><br><br>I really appreciate if you help me with steps as well, thanks! &lt;3​
    10·1 answer
  • Can someone help plss
    8·1 answer
  • Do what it says pls will give brainliest
    6·1 answer
  • What is the result when the sun 4x^2+8x-1 and 7x^2-3x+8 is multiplied by 5x^2?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!