Please helpp mee huhu

(x+4y+z)(x-7y) what are steps like associative, and commutative and distributive property in a polynomial expression

anzhelika [568]

Answer:

Step-by-step explanation:

your basically multiplying everything in the first parenthesis by everything in the second parenthesis

(x + 4y + z)(x - 7y) =

x(x - 7y) + 4y(x - 7y) + z(x - 7y) =....keep in mind, 4yx is the same as 4xy

x^2 - 7xy + 4xy - 28y^2 + zx - 7zy....combine like terms

x^2 - 3xy - 28y^2 + zx - 7zy <---- your answer

this is the distributive property

6 0

4 years ago

Anna‘s age is eight years less than four times her sisters age right in expression for Anna‘s age how old is Anna if her sister

mixer [17]

Anna's age will be equal to 6 years if her sister is five years old. The expression is Anna= 2T -4.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that Anna‘s age is eight years less than four times her sister's age right in expression for Anna‘s age how old is Anna if her sister is five years old

The expression for Anna's age is given below:-

Anna's age= 2T-4

Sister = 5 years

Anna= 2T -4

T is my sister's age. Then Anna's age will be calculated as:-

2(5)-4 = 10 - 4 = 6 years

Therefore, Anna's age will be equal to 6 years if her sister is five years old. The expression is Anna= 2T -4.

To know more about Expression follow

brainly.com/question/723406

#SPJ1

5 0

2 years ago

The larger of two numbers is eight more than three times the smaller number. The sum of the two numbers is fifty-two. Find the t

Alina [70]

Let $x$ be the larger number and $y$ the smaller number.

The first sentence translates to $x=8+3y$ . The second translates to $x+y=52$ .

Since $x=8+3y$ , you can substitute this into the second equation to get

$(8+3y)+y=4y+8=52\implies 4y=44\implies y=11$

Then substituting this into the original second equation gives

$x+11=52\implies x=41$

3 0

4 years ago

The coordinates of the vertices of A DEF are D(-4,1), E(3. – 1), and F(-1, – 4)

liq [111]

Answer:

ΔDEF is not a right triangle because no two sides are perpendicular.

Step-by-step explanation:

The coordinates of the vertices of ΔDEF are given to be D(-4,1), E(3,-1) and F(-1,-4).

Now length of DE is given by $\sqrt{(-4-3)^{2}+(1-(-1))^{2} } =\sqrt{53}$ units

length of EF is given by $\sqrt{(3-(-1))^{2}+(-1-(-4))^{2} }=\sqrt{25}$ units

and length of FD is given by $\sqrt{(-4-(-1))^{2}+(1-(-4))^{2} } =\sqrt{34}$ units.

Therefore, 53 ≠ 25+34

Hence, the length of the sides does not support the Pythagoras theorem.

So, ΔDEF is not a right triangle because no two sides are perpendicular. (Answer)

7 0

3 years ago

How can (1/4)x-3=(1/2)x+8 be set up as a system of equations?

pantera1 [17]

Thank you for posting your question here at brainly. Feel free to ask more questions.
<span>
The best and most correct answers among the choices provided by the question are:

</span><span>4y − x = −12
2y − x = 16
</span><span>
Hope my answer would be a great help for you. </span>

6 0

3 years ago

Read 2 more answers