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madreJ [45]
3 years ago
5

Express 8.21 as a mixed number

Mathematics
1 answer:
kramer3 years ago
3 0
8 21/100. Did it on a calculator.
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SHOW all the work please thank you so much
lana [24]
What do you need help with? it helps us to know the question!
7 0
3 years ago
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
4 0
3 years ago
Giving thanks and brainliest for best answer &lt;3<br> ::
satela [25.4K]
I can help if I see the problem
7 0
3 years ago
Read 2 more answers
What is the radius of the base of the cone in the figure below?
liubo4ka [24]

Answer:  approximately 12.17 units

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

Work Shown:

We'll use the tangent ratio to find r

tan(angle) = opposite/adjacent

tan(49) = 14/r

r*tan(49) = 14

r = 14/tan(49)

r = 12.1700143294271

r = 12.17

The radius is approximately 12.17 units long.

7 0
3 years ago
-4(3 - 2x) + 2x = 2x - 8
Dennis_Churaev [7]

Answer:

C) x = ½

Step-by-step explanation:

Using the <em>Distributive Property</em> and combining like-terms will give you this:

-12 + 10x = 2x - 8

- 10x -10x

--------------------

-12 = -8x - 8

+ 8 +8

-------------

-4 = -8x [Divide by -8]

½ = x

I am joyous to assist you anytime.

4 0
3 years ago
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