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arsen [322]
2 years ago
9

I’m taking a test rn please I need help!?

Mathematics
1 answer:
Zinaida [17]2 years ago
6 0

Answer:

1. 4 (x  +6)

2. 3x + 38

Step-by-step explanation:

hopefully this helps :)

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Calculate the coefficient of x4y18 in the expansion of (x − y)22
Oksana_A [137]
Binomial theorem:

(x-y)^n=\displaystyle\sum_{k=0}^n\binom nkx^k(-y)^{n-k}

The term with x^4y^{18} corresponds to n=18+4=22 and k=4 (or k=18, since \dbinom nk=\dbinom n{n-k}).

So, the coefficient of this term is

\dbinom{22}4(-1)^{18}=\dbinom{22}4=\dfrac{22!}{4!(22-4)!}=7315
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3 years ago
Need help on this question
blondinia [14]

Answer:

Hi... Your answer is...

A= -7

B=0

7 0
2 years ago
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Hi! Please asnwer this for 30 points!! "Jada applies two transformations to a polygon in the coordinate plane. One of the transf
sveticcg [70]

Using translation concepts, we have that:

  • For the translation, she has to communicate if it is up, down, left or right and the number of units.
  • For a reflection she must communicate over which line the reflection happened.

<h3>What is a translation?</h3>

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s definition or in it’s domain. Examples are shift left/right or bottom/up, vertical or horizontal stretching or compression, and reflections over the x-axis or the y-axis.

A translation is either shift left/right or bottom/up, hence she has to communicate if it is up, down, left or right and the number of units.

A reflection is over a line, hence she must communicate over which line the reflection happened.

More can be learned about translation concepts at brainly.com/question/28373831

#SPJ1

4 0
1 year ago
Which equilibrium at one atmosphere pressure is correctly associated with Kelvin temperature at which it occur?a. ice-water equi
Lostsunrise [7]

Answer:

d. steam-water equilibrium at 373 K

Step-by-step explanation:

At one atmospheric pressure  , the boiling point of water is 100°C or 273+100 = 373 K in kelvin temperature scale.

so at this temperature vapor pressure of water and steam are in equilibrium .

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3 years ago
f\left(n\right)=\left\{\frac{\frac{n}{2}\ \ \ \ if\ n\ is\ even}{3n+1\ \ \ \ \ \ if\ n\ is\ odd}\right\}
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Answer:

what is this meant to mean¯\_ಠ_ಠ_/¯

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3 years ago
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