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2 years ago

The cost, c, of paper towels, based on the number of rolls, r, is given by this equation.

Mathematics

2 answers:

Amiraneli [1.4K]2 years ago

4 0

Answer:

I think the cost for each roll is 1.29

Step-by-step explanation:

Hope this helps

Travka [436]2 years ago

4 0

$\\ \sf\longmapsto c=1.29r$

cost is 1$

$\\ \sf\longmapsto 1=1.29r$

$\\ \sf\longmapsto r=\dfrac{1}{1.29}$

$\\ \sf\longmapsto r=0.7$

Cost of 0.7 rolls is 1

Cost of 1 roll

$\\ \sf\longmapsto \dfrac{1}{0.7}$

$\\ \sf\longmapsto \dfrac{10}{7}$

$\\ \sf\longmapsto 1.4\$$

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3 years ago

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Step-by-step explanation:

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3 years ago

a circle is inscribed in a square. the circumference of the circle is increading at a constant rate of 6 inches per second. As t

Burka [1]

Answer:

The rate at which Perimeter of the square is increasing is $\frac{24}{\pi} \ in/secs$ .

Step-by-step explanation:

Given:

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Solution:

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$\frac{d(2\pi r)}{dt} =6\\\\2\pi\frac{dr}{dt}=6\\\\\frac{dr}{dt}=\frac{6}{2\pi}\\\\\frac{dr}{dt}=\frac{3}{\pi}$

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So we get;

$\frac{dP}{dt}= 8\times\frac{3}{\pi}\\\\\frac{dP}{dt}= \frac{24}{\pi}\ in/sec$

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Step-by-step explanation:

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Answer:

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