3 years ago

Jack bought a stereo on sale for $231 . The original price was $385 . What was the percent of decrease in a price

Mathematics

1 answer:

Alenkinab [10]3 years ago

8 0

231 / 385 = 0.6 diving the price it is by the price is was gives the answer
= 60%

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Average speed = total miles driven / total driving time
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250 / (4 1/2) =
250 / (9/2) =
250 * 2/9 =
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Show that there is no solution for the radical equation 4w+4=-4.

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Answer:

there is a solution

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Step-by-step explanation:

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3 years ago

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faltersainse [42]

The price of one vegetarian special lunch is $7 and price of one chicken special lunch is $8.

Step-by-step explanation:

Let,

Price of one vegetarian special lunch = x

Price of one chicken special lunch = y

According to given statement;

21x+40y=467 Eqn 1

28x+36y=484 Eqn 2

Multiplying Eqn 1 by 28

$28(21x+40y=467)\\588x+1120y=13076\ \ \ Eqn\ 3$

Multiplying Eqn 2 by 21

$21(28x+36y=484)\\588x+756y=10164\ \ \ Eqn\ 4$

Subtracting Eqn 4 from Eqn 3

$(588x+1120y)-(588x+756y)=13076-10164\\588x+1120y-588x-756y=2912\\364y=2912$

Dividing both sides by 364

$\frac{364y}{364}=\frac{2912}{364}\\y=8$

Putting y=8 in Eqn 1

$21x+40(8)=467\\21x+320=467\\21x=467-320\\21x=147$

Dividing both sides by 21

$\frac{21x}{21}=\frac{147}{21}\\x=7$

The price of one vegetarian special lunch is $7 and price of one chicken special lunch is $8.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

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3 years ago

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dem82 [27]

The answer is 7.5 miles

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3 years ago

Read 2 more answers