3 years ago

The curve y=f(x) called Tractrix has the following property: The derivative at any point x satisfies the formula:

1 answer:

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The limitation of algebra that leads development of calculus is that it can make a complex number of variables present it as a single variable and then apply the necessary formula needed to find the answer. After manipulation, the presented single variable can be changed back to a complex variable by substitution

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A family spent $65 on dinner and left a 20% tip. What was the total cost of their meal?

Oxana [17]

Answer: B, $78

Step-by-step explanation:

If the tip is 20% of the dinner cost, then we have to first find what is 20% of 65.

20% x 65 = 13. So the tip for the dinner is 13 dollars.

Now we have to add it to the original dinner cost.

65 + 13 = 78.

Therefore, the total cost of their meal is 78 dollars. So the answer is B, $78!

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3 years ago