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2 years ago

Which of the following regular polygons circumscribed about a circle provides the best estimate for the area of that circle?

Mathematics

1 answer:

ki77a [65]2 years ago

6 0

Hi i need more informacion :)01927. i tgink is octagon

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3z2 - 2z + 8 <br> -<br> (10z2 +7z - 12)

klemol [59]

Answer: 7z²-9z+20

Step-by-step explanation:

PEMDAS - Please Excuse My Dear Aunt Sally - Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

4 0

2 years ago

Find the sum of the first n terms.

Sunny_sXe [5.5K]

S(8)=((100×(1−(50÷100)^(8))÷(1−50÷100)))
=199.22

5 0

2 years ago

Help!!!!!!!<br> I need to find the surface area of this image.

Kaylis [27]

Answer:

length;12cm

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Match the following rational expressions to their rewritten forms.

Nookie1986 [14]

Answer:

Answer image is attached.

Step-by-step explanation:

Given rational expressions:

$1.\ \dfrac{x^2+x+4}{x-2}\\2.\ \dfrac{x^2-x+4}{x-2}\\3.\ \dfrac{x^2-4x+10}{x-2}\\4.\ \dfrac{x^2-5x+16}{x-2}$

And the rewritten forms:

$(x-2)+\dfrac{6}{x-2}\\(x+3)+\dfrac{10}{x-2}\\(x+1)+\dfrac{6}{x-2}\\(x-3)+\dfrac{10}{x-2}$

We have to match the rewritten terms with the given expressions.

Let us consider the rewritten terms and let us solve them one by one by taking LCM.

$(x-2)+\dfrac{6}{x-2}\\\Rightarrow \dfrac{(x-2)^{2}+6 }{x-2}\\\Rightarrow \dfrac{x^2-4x+4+6 }{x-2}\\\Rightarrow \dfrac{x^2-4x+10}{x-2}$

So, correct option is 3.

$(x+3)+\dfrac{10}{x-2}\\\Rightarrow \dfrac{(x+3)(x-2)+10}{x-2}\\\Rightarrow \dfrac{(x^2+3x-2x-6)+10}{x-2}\\\Rightarrow \dfrac{x^2+x+4}{x-2}$

So, correct option is 1.

$(x+1)+\dfrac{6}{x-2}\\\Rightarrow \dfrac{(x+1)(x-2)+6}{x-2}\\\Rightarrow \dfrac{x^{2} +x-2x-2+6}{x-2}\\\Rightarrow \dfrac{x^{2} -x+4}{x-2}$

So, correct option is 2.

$(x-3)+\dfrac{10}{x-2}\\\Rightarrow \dfrac{(x-3)(x-2)+10}{x-2}\\\Rightarrow \dfrac{x^2-3x-2x+6+10}{x-2}\\\Rightarrow \dfrac{x^2-5x+16}{x-2}$

So, correct option is 4.

The answer is also attached in the answer area.

7 0

2 years ago

If you sleep an average of 7.5 hours each night, how many hours do you sleep in a year?

satela [25.4K]

Answer:

$\boxed{\sf 2737.5 \ hours}$

Step-by-step explanation:

The average is 7.5 hours of sleep each night.

There are 365 nights in 1 year.

$\sf Multiply \ the \ value \ by \ 365.$

$7.5 \times 365$

$2737.5$

5 0

2 years ago

Read 2 more answers