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3 years ago

Go step by step to reduce the radical. V216

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

6 0

Answer:

$6\sqrt{6}$

Step-by-step explanation:

$\sqrt{216}$

factorise 216

$\sqrt{2*2*2*3*3*3}$

since it is square root (meaning it has index to) pair up the number

$2*3\sqrt{2*3$

$6\sqrt{6}$

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astraxan [27]

The right answer is Option A.

Step-by-step explanation:

Let,

x be the postcards

y be the large envelops

According to given statement;

14x+5y=12 Eqn 1

10x+15y=24.80 Eqn 2

Multiplying Eqn 1 by 3;

$3(14x+5y=12)\\42x+15y=36\ \ \ Eqn \ 3$

Subtracting Eqn 2 from Eqn 3;

$(42x+15y)-(10x+15y)=36-24.80\\42x+15y-10x-15y=11.20\\32x=11.20\\$

Dividing both sides by 32

$\frac{32x}{32}=\frac{11.20}{32}\\x=0.35$

Putting x=0.35 in Eqn 1;

$14(0.35)+5y=12\\4.90+5y=12\\5y=12-4.90\\5y=7.10$

Dividing both sides by 5

$\frac{5y}{5}=\frac{7.10}{5}\\y=1.42$

Therefore, one large envelope costs $1.42

The right answer is Option A.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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Answer:

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Read 2 more answers