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pav-90 [236]
2 years ago
6

The price of a notebook is 20% less than the price of a book. By

Mathematics
1 answer:
ki77a [65]2 years ago
3 0

Answer:

125%

Step-by-step explanation:

lets just say the book is $100. 20% less would be $80
now to go back to $100, we need to add $20 to $80
20 is 25% of 80, so add the extra 25% to 100% of 80

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ad-work [718]

You can see that the term -6y appears in both equations. In this cases, we can leverage this peculiarity and subtract the two equations to get rid of the repeated term. So, if we subtract the first equation from the second, we have

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Now that we know the value of x, we can substitute in any of the equation to deduce the value of y: if we use the first equation, for example, we have

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nadya68 [22]

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3 years ago
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Answer:

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Step-by-step explanation:

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Summit Plummet's big drop starts at point A(0, 120) and ends at point B (56, 0). What's the slope from point A to point B?
Makovka662 [10]

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