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Veseljchak [2.6K]

4 years ago

14

Approximate the number using a calculator 6^2.8

1 answer:

Mama L [17]4 years ago

8 0

<u>Answer</u>

150.9467

<u>Explanation</u>

We can simplify this equation as;

6^2.8 = 6² × 6^0.8

= 36 × 4.1929

= 150.9467

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3 years ago

Two customers went to a post office to buy postcards and large envelopes. Each postcard

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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

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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

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Putting x=0.35 in Eqn 1;

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Dividing both sides by 5

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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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