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olga55 [171]
3 years ago
5

The candy store is having a 30% off sale. Emma is going to buy $12.50 worth of candy. How much will she pay after the discount?

Explain
Mathematics
2 answers:
Fantom [35]3 years ago
4 0
$16.25. You do 30% of $12.50 and then add it on
MArishka [77]3 years ago
3 0

Answer:

$16.25. You do 30% of $12.50 and then add it on that is pretty much it

Step-by-step explanation:

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Answer:

\dfrac{dy}{dx}=- \dfrac{1}{\left(x - 1\right) \left(x + 1\right)}

Step-by-step explanation:

Given:

y = \ln{\left(\dfrac{x + 1}{x - 1}\right)^{\frac{1}{2}}

using the properties of log we can take the power 1/2 and multiply it.

y = \dfrac{1}{2}\ln{\left(\dfrac{x + 1}{x - 1}\right)

now we can differentiate:

\dfrac{dy}{dx} = \dfrac{1}{2}\dfrac{1}{\left(\dfrac{x + 1}{x - 1}\right)}\left(\dfrac{d}{dx}\left(\dfrac{x+1}{x-1}\right)\right)

\dfrac{dy}{dx} = \dfrac{1}{2}\left(\dfrac{x - 1}{x + 1}\right)\left(- \dfrac{2}{\left(x - 1\right)^{2}}\right)

\dfrac{dy}{dx}=- \dfrac{1}{\left(x - 1\right) \left(x + 1\right)}

this is our answer!

8 0
3 years ago
Five consecutive two-digit positive integers, each less than 30, are not prime. What is the largest of these five integers?
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the largest is 28

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I NEED HELP PEOPLE LAST TIME
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29.

f(x) = -x^2-7x-6

As x \to \pm \infty, y \to - \infty.

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The growth of a population is not linear, it's exponential.

31.

Exponential growth > polynomial, so y = 3^x.

35.

V(t) = 30\cdot (25)^{\frac{t}{20}}

The question is asking V(t) for t = 40.

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36.

The point of symmetry of a quadratic equation y = ax^2+bx+c is at its vertice:

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