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Marysya12 [62]
3 years ago
9

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

Mathematics
1 answer:
anzhelika [568]3 years ago
6 0

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

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Answer:

a) x=-3

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labwork [276]

Answer:

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Step-by-step explanation:

Solution:-

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We are given that the function completes 2 cycles over the domain of [ 0 , 2π ]. The number of cycles of a sinusoidal wave is given by the frequency parameter ( w ).

We will plug in w = 2. No information is given regarding the phase difference ( k ) and the position of waveform from the origin. So we can set these parameters to zero. k = b = 0.

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4 0
3 years ago
TIME REMAINING
Leya [2.2K]

Answer:

w=-7/2z

Step-by-step explanation:

to solve for w you firstly have to group the like terms

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then you have to divide both sides by 2 inorder to remain with w on one side.

2w/2=-7/2

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I hope this helps

3 0
3 years ago
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The density of silver is 10.5 g/cm3. find the volume of a silver bar if its mass is 950 g
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950 g * 1 cm^3/10.5g =  950/10.5 cm^3 = 90.476 cm^3

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pshichka [43]

Answer:

Step-by-step explanation:

For a number to be divisible by 4 you just need to worry about the 10s and 1s place.  You also want to know that the 1s cylce every 20, or in other words:

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3 years ago
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