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BartSMP [9]
3 years ago
7

Alexa works for an ice cream cart vendor . She receives $28 for taking the cart out for a shift plus a commission of $0.15 for e

ach item she sells . Alexa worked a shift Saturday and earned $ 49.30 . Write equation to solve for x, the number of items Alexa sold?
Mathematics
1 answer:
zimovet [89]3 years ago
5 0

Answer:

28 + 0.15x = 49.30

0.15x = 49.30 - 28

0.15x = 21.3

divide both sides by 0.15

x = 21.3/0.15

x = 142

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201

Step-by-step explanation:

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2 years ago
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Irina-Kira [14]

Answer:

The inner function is u = \pi x.

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\frac{dy}{dx} = y^{\prime} = \sec^{2}(u)*\pi = \pi\sec^{2}{\pi x}

Step-by-step explanation:

The inner function is the one we apply the outer function to.

So

y = \tan{\pi x}

We apply the outer function tangent to \pi x.

So, the inner function is u = \pi x.

The outer function is f(u) = \tan{u}.

The derivative of a compositve function

y = f(u) in which u = g(x) is given by the following function.

y^{\prime} = f^{\prime}(u)*g^{\prime}(x)

So

f(u) = \tan{u}

f^{\prime}(u) = \sec^{2}{u}

u = g(x) = \pi x

g^{\prime}(x) = \pi

So

y^{\prime} = f^{\prime}(u)*g^{\prime}(x)

\frac{dy}{dx} = y^{\prime} = \sec^{2}(u)*\pi = \pi\sec^{2}{\pi x}

7 0
3 years ago
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Aleksandr-060686 [28]

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Find the length of the arc<br> A.8 pie ft<br> B.32 pie ft<br> C.64 pie ft<br> D. 361 pie/ 12 ft
ExtremeBDS [4]
<h3>Answer: Choice A. 8pi  feet</h3>

======================================================

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The full circumference of a circle with radius r is

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3 years ago
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