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3 years ago

10

Which ordered pair is a solution of the inequality?

1 answer:

Greeley [361]3 years ago

8 0

Answer:

<h2>d. (3, -11)</h2>

Step-by-step explanation:

$y-1$

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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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The circumference of a circle is 25.12 miles. What is the circle's diameter? C=25.12 mi Use 3.14 for pi

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3 years ago

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Evaluate f(4) if f(x) =

abruzzese [7]

Answer:

f(4) = 4

Step-by-step explanation:

We have x = 4 so we use the middle line of the piecewise function since 0≤x≤4

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LenKa [72]

Answer:

D

Step-by-step explanation:

Each term has been multiplied by 2/5.

-1/2 * 2/5 = -2/10=-1/5

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