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g100num [7]
3 years ago
6

At first a price was decreased by 12%, then it was discounted again by an additional 5%. What is the percent of the total discou

nt?
PLZ HELP DUE TOMMOROW MORNING
Mathematics
1 answer:
olga_2 [115]3 years ago
4 0
Hello there! I can help you! So we are decreasing a price by 12% and then doing it again by 5%. We would pay 88% of the original price and then 95% of that sale price. To execute this better, let's make a real-world situation. Say that Mariana wants to buy a new pair of shoes that originally costed $100. The store has a tag for 12% off and then an additional 5% discount at the counter. How much would she pay for the shoes? What total discount does she get? Let's start by multiplying 100 by 88%. 100 * 88% (0.88) is 88. That's the first part. Now, we multiply that number by 95% to find the price at the counter. 88 * 95% (0.95) is 83.6. That's the price with both discounts. Mariana would pay $83.60 for the shoes, but what about the percent discount total? Let's subtract that price from 100 and see what we get. 100 - 83.6 is 16.4. Percents are parts of 100, so we don't need to do anymore simplifying. There. The total amount of discount is 16.4%.
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Answer:

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ok so one way is to just graph them on a graphing utility
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I will only convert the 1st one fully, you should be able to do the rest

1. y=-x^2+3x+8
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add8 to both sides
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factor perfect square
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force undistribute -1 in left side
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factor out a 4 in -1
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k=10.25
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basically completee the square with x and find P by force factoring a 4 out

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