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3 years ago

Dividing circumference with radius

Mathematics

1 answer:

uranmaximum [27]3 years ago

7 0

If you divide the circumference C over the radius r, you get 2pi

2pi = C/r

this is because

C = 2pi*r

is one formula to find the circumference. Another formula is

C = pi*d

which works because d = 2r, ie the diameter is twice the radius.

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The approximate volume of a sphere with a diameter of 10 centimeters is

Alexeev081 [22]

Answer: The volume is approximately 523.6 cm³.

Step-by-step explanation:

The formula for the volume of a sphere is V=4/3(3.14)r³

The radius is 5 cm, the you just have to multiply everything together.

5 0

3 years ago

Is -2 a solution to 4x^(3)-x^(2)+16x-4

sergiy2304 [10]

Answer:

Not a solution

Step-by-step explanation:

In order for $x=-2$ to be a solution, the result after substituting must be 0:

$4(-2)^3-(-2)^2+16(-2)-4\stackrel{?}{=}0$

$4(-8)-4-32-4\stackrel{?}{=}0$

$-32-40\stackrel{?}{=}0$

$-72\neq0$

Therefore, $x=-2$ is not a solution to $4x^3-x^2+16x-4$

3 0

2 years ago

Find the value of x. Round to the nearest tenth.! PLEASE HELPP I’ve been stuck on it for HOURS!

barxatty [35]

Answer

63.2 degrees

Step-by-step explanation:

Using law of cosines: 19^2=8^2+14^2-2(8)(14) cos (x)

361=64+196-224 cos(x)

361=260-224cos(x)

101=224cos(x)

divide both sides by 224, which gets you (rounded to 4th decimal place) 0.4509. do inverse cos which gets you 63.2

6 0

2 years ago

Help me with the answer please

Dvinal [7]

Answer: your dumb

Step-by-step explanation:

7 0

3 years ago

A line passes through (-10, 2) and (-3, 8). m=

Rom4ik [11]

Answer:

m=6/7

Step-by-step explanation:

If you graph both of these points and use the rise over run method getting 6/7 as your slope or m.

7 0

3 years ago