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bija089 [108]
3 years ago
5

A movie theater sends out a coupon for 70% off the price off a ticket. a) Write an equation for the situation, where y is the pr

ice of the ticket with the coupon, and x is the original price of the ticket. Use integers or decimals for any numbers in the expression.
Mathematics
2 answers:
sergey [27]3 years ago
4 0
Equation 1
y=x-0.7

equation 2
x=y+0.7

Pepsi [2]3 years ago
3 0

Answer:

y=0.30x

Step-by-step explanation:

Givens:

  • y is the price of the ticket, after the offer.
  • x is the original price of the ticket, before the offer.

So, knowing what represents the variables, we can write an expression to model this situation. The expression would be:

y=x-0.70x

The difference is modelling the offer, the discount from the coupon, it says that such coupon offers a discount of 70% of the original prices, and that percentage is represented by 0.70, multiplied by x because that variable represents the original price. In addition, we have to subtract, because a discount means lower price, less than the original.

Therefore, the expression is:

y=0.30x

In words, with the coupon, people just pay 30% of the original price.

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Mashcka [7]
<h2>Time taken by Helga to wax the car is 72 minutes</h2>

Step-by-step explanation:

Let w be the work of waxing.

Rosita can wax her car in 2 hours or 120 minutes.

Time taken by Rosita = 120 minutes

\texttt{Rate of Rosita = }\frac{W}{120}

Let time taken by Helga be t,

\texttt{Rate of Helga = }\frac{W}{t}

When she works together with Helga, they can wax the car in 45 minutes.

We have

             \frac{W}{\frac{W}{120}+\frac{W}{t}}=45\\\\120t=45(120+t)\\\\120t=5400+45t\\\\t=72minutes

Time taken by Helga to wax the car is 72 minutes

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