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Kipish [7]
2 years ago
11

Plz answer my question

Mathematics
1 answer:
likoan [24]2 years ago
8 0

Step-by-step explanation:

a -  \frac{1}{a}  \\  \frac{ {a}^{2} - 1 }{a}  \\  =  \frac{ {(2 +  \sqrt{3} )}^{2}  - 1}{2 +  \sqrt{3} }  \\  = \frac{7 + 4 \sqrt{3} - 1 }{2 +  \sqrt{3} }  =  \frac{6 + 4 \sqrt{3} }{2 +  \sqrt{3} }  = 2 \sqrt{3}

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(32 minus 20) divided by 4
aalyn [17]
The answer is 3. I hope this helps!
8 0
3 years ago
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the volumes of two spheres are 729 in3 and 27 in3. what is the ratio of their radii, rounded to the nearest whole number?
MaRussiya [10]
The volumes of spheres are proportional to R³. So their 'R's
are proportional to ∛their volumes.

(729/ 27) = 27

∛27 = <u>exactly 3</u> .  No rounding required.
5 0
3 years ago
<img src="https://tex.z-dn.net/?f=54x2y%20-%2012x2y2" id="TexFormula1" title="54x2y - 12x2y2" alt="54x2y - 12x2y2" align="absmid
Free_Kalibri [48]

Answer:

6x²y(9 - 2y)

Step-by-step explanation:

Step 1: Factor out GCF

6(9x²y - 2x²y²)

Step 2: Factor out <em>x²</em>

6x²(9y - 2y²)

Step 3: Factor out <em>y</em>

6x²y(9 - 2y)

And we have our factored answer.

7 0
3 years ago
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7.8 billion pounds of candy per year how much per month per person with 303 million people
likoan [24]
7.8 billion/12 is how much per month:
7,800,000,000/12 = 650,000,000 candy per month.


To find out per person, divide the total amount of candies by the months in a year, then divide that amount to the population.
7,800,000,000/12 = 650,000,000
650,000,000/303,000,000 = 2.14 (Round down) = 2

Answers:
Per month: 650,000,000 candies
Per person: 2 candies
8 0
3 years ago
Select the term that best describes the statement if a polygon has eight sides then it is an octagon
Brut [27]
The answer you are looking for is "conditional".
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3 years ago
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