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3 years ago

12

Lisa has played in six soccer matches. her brother Josh has played 18 soccer matches. Lisa says josh has played in 12 times as m

any matches as she has.

1 answer:

Tamiku [17]3 years ago

6 0

Answer:

Josh has played in 3 times as many as Lisa has.

Step-by-step explanation:

She mixed up multiplication and addition.

6+12=18

6*3=18

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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;

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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

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

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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