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FromTheMoon [43]
3 years ago
13

PLEASE SOMEONE ACTUALLY HELP I WILL MARK BRAINLIEST

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
7 0

Answer:

C, or the third one

Step-by-step explanation:

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Find the circumference of the circle. Use 3.14 and the symbol that it shows
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Answer:

r=d/2=18/2=9cm

circumference=2πr=2×3.14×9=56.52cm

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What is k(3) for the function k(n) = 4n to the 2 power?<br> A. 36 <br> B. 24<br> C. 10 <br> D. 49
pychu [463]
B because 3*4 equals 12
Then 4*3 equals 12
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4 years ago
I need help the correct answer
dangina [55]
The answer us 25/4
the third option
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3x - 7 + 15x + 16 = 9 - 2x + 4 - x
Nataly [62]

Answer:

Step-by-step explanation:

18x + 9 = -3x + 13

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3 years ago
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(-18x^2+12x-2)*(x^3+12x^2+48x+64)
prohojiy [21]
<h2>Answer:</h2>

-18x^5-204x^4-722x^3-600x^2+672x-128

<h2>Explanation:</h2>

( - 18 {x}^{2}  + 12x - 2)

( {x}^{3}  + 12 {x}^{2}  + 48x + 64)

There are multiple ways to solve this for example the foil method or the box method. I prefer to do the box method.

First we are going to set it up

After we set it up we have to solve it so first we are going to multiply

{x}^{3}  \times  - 18 {x}^{2}  =  - 18 {x}^{5}

We have to add the exponent

- 18 {x}^{2}  \times 12 {x}^{2}  =  - 216 {x}^{4}

- 18 {x}^{2}  \times 48x =  - 864 {x}^{3 }  \\  - 18{x}^{2}  \times 64 =  - 1152 {x}^{2}  \\ 12x \times  {x}^{3}  = 12 {x}^{4}  \\ 12x \times 12 {x}^{2}  = 144 {x}^{3}

12x \times 48x = 576 {x}^{2}  \\ 12x \times 64 = 768x

- 2  \times  {x}^{3}  =  - 2 {x}^{3}  \\  - 2 \times 12 {x}^{2}  =  - 24 {x}^{2}  \\  - 2 \times 48x =  - 96x \\  - 2 \times 64 =  - 128

Now we have to add them

-18x^5 stays because there is nothing to add to

Now we add the rest

-216 {x}^{4}  + 12 {x}^{4}  =  - 204 {x}^{4}

- 864 {x}^{3}  + 144 {x}^{3}  +  - 2 {x}^{3}  = -  722 {x}^{3}

768x - 96x = 672x

And -128 stays the same

- 1152 {x}^{2}  + 576 {x}^{2}  - 24 {x}^{2}  =  - 600 {x}^{2}

The answer is

-18x^5-204x^4-722x^3-600x^2+672x-128

5 0
4 years ago
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