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3 years ago

Solve the system of linear equations by substitution.What is the solution to x=2y+y and 3x+2y=3

Mathematics

1 answer:

gulaghasi [49]3 years ago

5 0

Answer: the first one is 3y

Step-by-step explanation:

Go to the website mathpapa , type in the problem and it gives you the answer with steps

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Solve the system of equations by the substitution method

slava [35]

Answer:

x=0.5

y = 10.5

Step-by-step explanation:

y = 3x + 7

y = 5x + 8

3x + 7 = 5x + 8

3x - 5x= 8 - 7

2x = 1

x= 1/2

x=0.5

y = 5x + 8

y = 5(0.5) + 8

y = 2.5 + 8

y = 10.5

8 0

3 years ago

Which of the following is(are) the solution(s) to 12x – 1= 10?

castortr0y [4]

Answer:

x= 11/12

Step-by-step explanation:

12x - 1 = 10

12x = 10 + 1

12x = 11, divide 11 by 12

you can't divide it evenly so leave it as a fraction.

3 0

3 years ago

Plzz help plzz

natka813 [3]

Step-by-step explanation:

1. -4

2. 4

3. -15

I first wrote the answer of 2 , 3 and then 1 .

copy it carefully.

you may get confused

6 0

2 years ago

Write a rule for the linear function in the table above. ( Hint: Use the formula y = mx + b )

Marta_Voda [28]

Y=5x-3

the slope is plus 5
so if 1 = 2
simply subtract 5 from two and you get -3

6 0

3 years ago

Which statement shows how the product of (x + 7)2 demonstrates the closure property of multiplication?

Illusion [34]

The true statement that show the closure property of multiplication :

<h3>a. x² + 14x + 49 is a polynomial</h3>

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<h3>Further explanation</h3>

<em>If equation ax³ + bx² + cx + d = 0 has roots x₁ , x₂ , and x₃ then</em>

$x_1 + x_2 + x_3 = - \frac{b}{a}$

$x_1 x_2 + x_1 x_3 + x_2 x_3 = \frac{c}{a}$

$x_1 x_2 x_3 = - \frac{d}{a}$

Let us now tackle the problem!

$\texttt{ }$

This problem is about Polynomial.

$(x + 7)^2 = (x + 7)(x + 7)$

$(x + 7)^2 = x^2 + 7x + 7x + 7(7)$

$(x + 7)^2 = x^2 + 14x + 49$

$x^2 + 14x + 49$ is a polynomial.

$x + 7$ is polynomial.

It demonstrates the closure property of multiplication.

$\texttt{ }$

<h3>Conclusion:</h3>

<em>The true statement that show how the product of (x + 7)² demonstrates the closure property of multiplication:</em>

<h3>a. x² + 14x + 49 is a polynomial</h3>

$\texttt{ }$

<h3>Learn more</h3>

Solving Quadratic Equations by Factoring : brainly.com/question/12182022
Determine the Discriminant : brainly.com/question/4600943
Formula of Quadratic Equations : brainly.com/question/3776858

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<h3>Answer details</h3>

Grade: High School

Subject: Mathematics

Chapter: Polynomial

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Keywords: Quadratic , Equation , Discriminant , Real , Number

#LearnWithBrainly

7 0

3 years ago

Read 2 more answers