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8_murik_8 [283]
3 years ago
7

What is the volume of a cone with the given dimensions?

Mathematics
2 answers:
yuradex [85]3 years ago
8 0
B. 102.57 cu. cm is the answer Solution: V=πr^2h The diameter is 14. To find the radius you divide the radius by 2 which is equal to 7. [Radius is 2 times diameter] V= 3.14×7×7×2 V= 102.57
Ivan3 years ago
4 0
Hey there,

Your correct answer to this question above would be <span>102.57 cu. cm

The FORMULA FOR THE CONE IS : Pi * r^2 * height/3
Plug in the numbers : 3.14 *7^2 * 2/3 = 102.57

And that would be your answer.

~Jurgen


</span>
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PLZ HELP!!! I Will give brainliest. What is the value of x in sin(3x)=cos(6x) if x is in the interval of 0≤x≤π/2
sertanlavr [38]

Answer:

sin(2x)=cos(π2−2x)

So:

cos(π2−2x)=cos(3x)

Now we know that cos(x)=cos(±x) because cosine is an even function. So we see that

(π2−2x)=±3x

i)

π2=5x

x=π10

ii)

π2=−x

x=−π2

Similarly, sin(2x)=sin(2x−2π)=cos(π2−2x−2π)

So we see that

(π2−2x−2π)=±3x

iii)

π2−2π=5x

x=−310π

iv)

π2−2π=−x

x=2π−π2=32π

Finally, we note that the solutions must repeat every 2π because the original functions each repeat every 2π. (The sine function has period π so it has completed exactly two periods over an interval of length 2π. The cosine has period 23π so it has completed exactly three periods over an interval of length 2π. Hence, both functions repeat every 2π2π2π so every solution will repeat every 2π.)

So we get ∀n∈N

i) x=π10+2πn

ii) x=−π2+2πn

iii) x=−310π+2πn

(Note that solution (iv) is redundant since 32π+2πn=−π2+2π(n+1).)

So we conclude that there are really three solutions and then the periodic extensions of those three solutions.

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5

Related Questions (More Answers Below)

5 0
3 years ago
Identify the vertex of g(x) = (x+10)^2+2
RoseWind [281]

Answer:

(-10, 2)

Step-by-step explanation:

Compare:

g(x) = (x+10)^2+2

f(x)  = (x - h)^2 + k

Matching these up, term by term, we see that h = -10 and k = 2.  (h, k) represents the vertex of the parabola f(x)  = (x - h)^2 + k.

We conclude that the vertex of this parabola is (-10, 2).

7 0
3 years ago
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Zina [86]

Answer:

6: S

7: C

8: C

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11: C

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15: C

Step-by-step explanation:

Complementary angles add to 90 degrees.

Suplementary angles add to 180 degrees.

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