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2 years ago

2. Explanation

Mathematics

2 answers:

Gelneren [198K]2 years ago

6 0

Answer:

. vvcgv dc dgg t.v. grff cft

Butoxors [25]2 years ago

3 0

Answer:

x%3

Step-by-step explanation:

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A 9-foot roll of wrapping paper costs $10.26 . What’s the price per yard?

Strike441 [17]

Answer:

3.42 per yard

Step-by-step explanation:

3 ft are in 1 yard

9 ft= 3 yards

10.26÷3=3.42

hope this helps

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3 years ago

Please help me on this will give you brainliest!!

vovangra [49]

Answer:

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3 years ago

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3 years ago

Read 2 more answers

Algebra 2: Functions, graphing, and transformations.

erastovalidia [21]

Answer:

The answer is “C” (Shifts left 3 units)

Step-by-step explanation:

To find the transformation, compare the function to the parent function and check to see if there is a horizontal or vertical shift, reflection about the x-axis or y-axis, and if there is a vertical stretch.

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3 years ago

webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

$\frac{dD}{dt} =-\frac{6}{10*2\pi } =-\frac{3}{10\pi }$

The sign (-) shows that the D is decreasing.

3 0

3 years ago