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3 years ago

Using substitution, what is the first step to solve: x=6y+3 and x+2y=5.

Mathematics

2 answers:

Sedbober [7]3 years ago

7 0

Answer:

x= 9/2 y=1,4

Step-by-step explanation:

Hope this helped you! :)

Fiesta28 [93]3 years ago

4 0

Answer:

Step-by-step explanation:

Remark

You could do it a very convoluted way or you could do it simply. The simple way, I think, is the one intended. The x on the second equation is sitting by it itself. So is it in the first equation. Put the x from the first equation into the second.

Solution

x=6y+3 ===> x+2y=5.

6y + 3 + 2y = 5 First Step

8y + 3 = 5 Subtract 3 from both sides

8y = 5 - 3 Combine

8y = 2 Divide by 8

y = 2/8

y = 1/4

============================

x = 6y + 3

x = 6*(1/4) + 3

x = 6/4 + 3

x = 1.5 + 3

x = 4.5

Solution (4.5 , 0.25)

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Which represents the polynomial written in standard form? 8x2y2 – StartFraction 3 x cubed y Over 2 EndFraction 4x4 – 7xy3 –7xy3

olga55 [171]

Polynomial equation is a equation which is formed with coefficients variables and exponents with basic mathematics operation and equality sign. The given option the option A matches correctly with the above polynomial equation which is,

$-7xy^3+8x^2y^2-\dfrac{3x^3y}{2}+4x^4$

Hence the option A is the correct option.

<h3>Given information-</h3>

The given polynomial equation in the problem is,

$8x^2y^2-\dfrac{3x^3y}{2}+4x^4-7xy^3$

<h3>Polynomial equation </h3>

Polynomial equation is a equation which is formed with coefficients variables and exponents with basic mathematics operation and equality sign.

In the above polynomial equation the variable are<em> x </em>and <em>y </em>and the highest power of the variable <em>x</em> is four and highest power of the variable <em>y</em> is three.

Arrange the polynomial equation in the power of the variable <em>x. </em>Thus,

$4x^4-\dfrac{3x^3y}{2}+8x^2y^2-7xy^3$

Arrange the polynomial equation in the power of the variable <em>y. </em>Thus,

$-7xy^3+8x^2y^2-\dfrac{3x^3y}{2}+4x^4$

From the given option the option A matches correctly with the above polynomial equation which is,

$-7xy^3+8x^2y^2-\dfrac{3x^3y}{2}+4x^4$

Thus the option A is the correct option.

Learn more about the polynomial equation here;

brainly.com/question/25958000

8 0

3 years ago

Subtract (3x^3+4x^2)-(2x^3+3x^2-x)

insens350 [35]

Answer:

X^3 + x^2 + x

Step-by-step explanation:

First, distribute the negative sign to the numbers in the second parentheses. Then you’ll need to combine like terms.

4 0

3 years ago

Identify the value of a if

Serga [27]

Answer:

a=1/3

Step-by-step explanation:

from the point on the graph

x=4 and y=8

substitute them into the equation:

y=a(x-2) (2x+4)

you will get

8=a(4-2) (2(4)+4)

8=a(2) (8+4)

8=a(2) (12)

8=2a×12

8=24a

divide both sides by 24

8/24=24a/24

1/3=a or a=1/3

7 0

3 years ago

Stephen uses

34kurt

Answer:

13.75 servings or 13 ¾ servings

Step-by-step explanation:

This is the correct question

Stephen uses 2/25 kilograms of tofu in each serving of his famous tofu dish. He has 1 1/10 kilograms of tofu.

To get answer

We will have to divide the number of tofu required with the number of tofu own.

Stephen uses 2/25 kilograms of tofu in each serving and he has 11/10 kilograms tofu.

= (11/10) ÷ (2/25)

11/10 * 25/2 =

275 ÷ 20= 13.75 servings or 13 ¾ servings

Stephen can make 13 ¾ or 13.75 servings

3 0

3 years ago

Read 2 more answers

Add: (112 + 2) + (92 - 4)

pantera1 [17]

Answer:

See below.

Step-by-step explanation:

(112+2)+(92-4)

114+88

202

-hope it helps

5 0

3 years ago

Read 2 more answers

Using substitution, what is the first step to solve: x=6y+3 and x+2y=5.​

Using substitution, what is the first step to solve: x=6y+3 and x+2y=5.