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spin [16.1K]
4 years ago
14

What's the formula for R in C= 2•3.14r

Mathematics
1 answer:
natulia [17]4 years ago
5 0
C=2\cdot3.14r\\\\C=6.28r\\\\6.28r=C\ \ \ \ |divide\ both\ sides\ by\ 6.28\\\\\huge\boxed{r=\dfrac{C}{6.28}}


C=2\pi r\\\\2\pi r=C\ \ \ \ |divide\ both\ sides\ by\ 2\pi\\\\\huge\boxed{r=\frac{C}{2\pi}}
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Please explain how to do this,thanks
Mrrafil [7]
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6 0
4 years ago
Simplify the expressions below. Write the final product in standard form and show your work to receive full credit.
frozen [14]
1.
1.2 x^4 ( 4 x² + 3 x + 1 ) = 4.8 x^6 + 3.6 x^5 + 1.2 x^4
2.
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3.
( x² + 4 x - 3 ) ( 2 x² + x + 6 ) =
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7 0
4 years ago
PLease help me with this
posledela

Answer:

B) \sqrt{78}

Step-by-step explanation:

Out of all of the choices, \sqrt{78} is the only answer that is not a whole number.

If this answer is correct, please make me Brainliest!

7 0
3 years ago
A rectangle has the following vertices. Find the area of the rectangle. (-8, – 6), (4,2), (4, -6), (-8, 2) (1 point)
Slav-nsk [51]

Answer:

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3 0
3 years ago
A box with a square base and no top is to be built with a volume of 4000 in3. find the dimensions of the box that requires the l
vekshin1

Let the length of the square base be x inches .

And the height of the box be y inch .

Volume = x*x*y

4000 = x *x *y

y = \frac{4000}{x^2}

S = x*x + 2xy + 2 x y

S = x^2 + 4 xy

S = x^2+ 4x* \frac{4000}{x^2}

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S ' = 2x - \frac{16000}{x^2}

S ' =0

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x^3 = 8000

x = 20

y =  \frac{4000}{20^2} = \frac{4000}{400} = 10

6 0
3 years ago
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