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4 years ago

Solve C = 2πr (solve for "r") C = 15

Mathematics

2 answers:

Jobisdone [24]4 years ago

6 0

C = 2 pi r

but c = 15

15 = 2 pi r
15 = 2 * (22/7) * r
r = (15*7) / 2 / 22
r = 2.386

Lady_Fox [76]4 years ago

6 0

For this case we have the following equation:

$C = 2\pir$

From here, we clear the value of r:

$r = \frac{C}{2\pi}$

Substituting the values in the obtained equation we have:

$r = \frac{15}{2\pi}$

Doing the calculations we have:

$r = 2.4$

Answer:

The value of r is given by:

$r = 2.4$

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4 years ago

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Could anyone help me with this whole question? The bottom drop-down question options are, does or does not

Alina [70]

Answer:Values for the coefficient in the product k:

$a=b=c=d=3*10^8$ , so the first four boxes should be filled with the number "3"

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We perform all the products of wavelength time frequency indicated for the column of the quantity "k":

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Therefore, all products of these different wavelengths and their associated frequencies render the exact same answer : $3*10^8$ , which means that as one of these quantities increase, the other one will decrease in the same proportion to give the same numerical answer.

This means that the two quantities are associated via inverse proportionality. As seen in the equation below, if the quantities "x" and "y" are related by inverse proportionality (shown as one equals a constant "A" divided by the other variable), their product x*y will give that constant value "A" (which in our case is $3*10^8$ .

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4 years ago

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ahrayia [7]

Answer:

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steposvetlana [31]

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More can be learned about the volume of a sphere at brainly.com/question/25608353

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