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Gnesinka [82]
3 years ago
7

Lisa has a certain amount of money. She spent 39 dollars and has 3/4th of the original amount left. How much money did she have

originally
Mathematics
2 answers:
morpeh [17]3 years ago
5 0
$156, $39 is 1/4 of the money so 39 * 4 = 156
harina [27]3 years ago
4 0
If \frac { 3 }{ 4 } is left, that means \frac { 1 }{ 4 } was spent. So \frac { 1 }{ 4 } of the total amount is equal to 39.. Let's say x to the total amount. \frac { 1 }{ 4 } \cdot x=39\\ x=4\cdot 39\\ x=156\\

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Answer: it is verified that:

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Step-by-step explanation:

Given the differential equation

yy'' + (y')² = 0

To verify that y1 solutions to the DE, differentiate y1 twice and substitute the values of y1'' for y'', y1' for y', and y1 for y into the DE. If it is equal to 0, then it is a solution. Do this for y2 as well.

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Hence, y2 is a solution.

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= (-1/4)c1c2t(-3/2)

≠ 0

This clearly doesn't satisfy the differential equation, hence, it is not a solution.

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