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3 years ago

Factor completely. . 8x^3-27. Show solution with explanation.

1 answer:

7 0

Here we are given
8x^3-27
now making both as a cube root
(2x)^3-(3)^3
using formula cube root
 a^3-b^3=(a-b)(a^2+ab+b^2)
where
a=2x
b=3
now putting these values
2x^3-3^3=(2x-3)(2x^2+2x*3+3^2)
simplifying
2x^3-3^3=(2x-3)(4x^2+6x+9)
hence the right answer is
2x^3-3^3=(2x-3)(4x^2+6x+9)

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your team wins 18 medals at a track meet the medals are gold silver and bronze in ratio of 2;2;5. how many of each medal were wo

WITCHER [35]

The team won 4 gold medals, 4 silver medals and 10 bronze medals.

Step-by-step explanation:

Given,

Total medals won = 18

Ratio of gold, silver and bronze = 2:2:5

Let,

x be the original number.

Therefore,

Gold medals = 2x

Silver medals = 2x

Bronze medals = 5x

According to given statement;

$2x+2x+5x=18\\9x=18$

Dividing both sides by 9

$\frac{9x}{9}=\frac{18}{9}\\x=2$

Gold medals = 2x = 2(2) = 4

Silver medals = 2x = 2(2) = 4

Bronze medals = 5x = 5(2) = 10

The team won 4 gold medals, 4 silver medals and 10 bronze medals.

Keywords: ratio, division

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#LearnwithBrainly

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Answer:

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Step-by-step explanation:

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Answer:

If the perimeter of a square measures 32 cm, each side measures 32/4= 8 cm, because all sides are equal.
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