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
AysviL [449]
3 years ago
7

X=y x+2y =3 Solve using substitution

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
3 0

Answer:

Therefore the Final Solution is

x = 1 and y = 1

Step-by-step explanation:

Given:

x=y                ...............Equation ( 1 )

x+2y=3         ................Equation ( 2 )

To Find:

x = ?

y = ?

Solution:

Equating Equation  ( 1 ) in Equation ( 2 ) we get

y+2y=3\\\\3y=3\\\\y=\frac{3}{3} \\\\\therefore y =1

Now Substituting y = 1 in Equation ( 1 ) we get

x =1\\\\\therefore x=1

Therefore the Final Solution is

x = 1 and y = 1

You might be interested in
Question 1 (5 points)
Sonja [21]

Answer:

b

Step-by-step explanation:

8 0
3 years ago
The fifth highest mountain is Makalu, its height, rounded to the nearest hundred, is. 27,800 feet. What is the highest that this
erik [133]
We know that

<span> the highest that this mountain can be is 27849 feet

because this number (27849 feet) rounded </span>to the nearest hundred is 27800 feet, however if the number were 27850 the number rounded to the nearest hundred would be 27900

hence

the answer is
27849 feet
4 0
4 years ago
Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is worth either
Murrr4er [49]

Answer:

A is correct.

Step-by-step explanation:

From the second sentence , we can deduce that the total number of problems is 29.

Now, x represents the number of problems that award 5 marks, while y represents the number of problems that award 2 marks.

Hence x + y = 29.

There are a total of 100 marks. This mean each x has a mark of 5, so total x marks equal 5x. Also, each y has a mark of 2. total y marks equal 2y. Since total marks equal 100. This mean 5x + 2y = 100 which gives our second equation.

This shows A is correct.

3 0
3 years ago
Three tennis balls are packaged in a box. The box is 12.1 cm long, 3.5 cm wide, and 3.5 cm tall. Each ball is 3.3 cm in diameter
valkas [14]

Answer:

134 cm^3 empty space

Step-by-step explanation:

The box has a total volume of (12.1)(3.5)(3.5) = 191 cm^3

Each ball has a volume of (4/3)πr³

The ball's diameter is 3.3 cm, so it's radius is (3.3/2) or 1.65 cm

(4/3)(3.14)(1.65)³ = 18.8 cm^3

There are 3 balls, so they occupy 3*18.8 or 56.4 cm^3

Box volume - volume of 3 balls

191 cm^3    -   56.4 cm^3 = 134 cm^3

134 cm^3 is empty space in the box.

5 0
2 years ago
What value of k will result in the quadratic having one rational solution if 4x2+kx+4=0?
PtichkaEL [24]

The value of 'k' in the quadratic Equation    4x^{2}+kx+4=0 having one rational solution is k is 8.

<h3>What is a Quadratic Equation?</h3>
  • Quadratic equations are the polynomial equations of degree 2 in one variable of the type f(x) = ax^{2} + bx + c = 0 where a, b, c, ∈ R and a ≠ 0.
  • The standard form of a quadratic equation is ax^{2} + bx + c = 0 .

Here, the given equation is  4x^{2}+kx+4=0

By comparing the given equation with the standard form of the quadratic equation we get,

a = 4

b = k

c = 4

The given quadratic is having one rational solution, which means b^{2} -4ac=0

Therefore,

k^{2} -4 \times 4\times4=0\\k^{2} -64=0\\k^{2} =64\\k=\sqrt{64} \\k=8

Therefore, the value of k is 8.

Learn more about the quadratic equation is brainly.com/question/8649555

#SPJ4

7 0
2 years ago
Other questions:
  • What is the square root of 25p^3 expressed in simplified form?
    6·1 answer
  • The drama club sold 65 fewer adult tickets at $5 each than they did student tickets for $3 each. The total value of all the tick
    5·1 answer
  • What is X?<br> −2 1/2 - x=(−5 3/4)
    10·2 answers
  • Megan earned four dollars for an hour of babysitting on Saturday here and $16 how many hours did she babysit
    6·1 answer
  • I GIVE FIVE STARS AND THANKS!!
    15·1 answer
  • Imagine that 86,999 penniless people live in the town of Centerville. Bill Gates, whose net worth is $87,000,000,000 moves into
    9·1 answer
  • The area of a rectangular wall of a barn is 54 feet. It’s length is 12 feet longer than twice it’s width. Find the length and wi
    10·1 answer
  • I’ll give the first person to respond brainly :)
    7·1 answer
  • Can Somebody Help With Geometry?
    7·1 answer
  • PLEASE HELP ME I NEED TO KNOW
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!