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Artist 52 [7]
4 years ago
6

Margaret manages a second-hand clothing store. The store advertises that is you buy 3 items, you will get 15% off the most expen

sive item, 20% off the second most expensive and 30% of the cheapest item. You choose three items costing $10.00, $25.00, and $12.00. How much will you pay for the three items?
Mathematics
1 answer:
denis23 [38]4 years ago
7 0
The answer to this question would be $49.33
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3 years ago
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3 years ago
Brainliest Answer!!!
AleksandrR [38]
Its fairly straightforward. Since the bottom equation only has one unknown,x, because y=1.3, you can plug y in and solve for x. Once you find the value of x, you then have the value for two variables, x and y, and again have one unknown coefficient a. To solve for the coefficient you just plug in your y value (1.3) and your x value (which can be rounded to 0.42). Using a little bit of algebra, you can then solve for a which should be a=2.108. I am not sure if your teacher wants you to solve it this way but you could also use the elimination method or substitution method that you would of learned when discussing system of equations. But no matter which way you do it, the math follows the rules. Hope this helps. I’d suggest you solve it yourself to double check my work.

To verify my credibility,
I am a Mechanical Engineering major w/ minor in mathematics
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3 years ago
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The answer is 1 Bcuz u have to first plug in -4 for f then solve the equation by adding like terms and dividing
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