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Elenna [48]
3 years ago
14

Simplify 2х + х. О 2х2 О 3х O3x 2

Mathematics
2 answers:
nikdorinn [45]3 years ago
8 0

Answer:

3x

Step-by-step explanation:

2x  + x

3x

Nadya [2.5K]3 years ago
5 0
The answer would be 3x
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Prove identity tan 3x−tan 2x−tanx = tan 3xtan 2xtanx
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Tan ( a + b ) = [ tan a + tan b ] / [ 1 - (tan a)*(tan b) ];

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7 0
3 years ago
A cone has a volume of 108 pi and a base diameter of 12. What is the height of the cone?
serious [3.7K]

Answer:

h  = 9 units of length

Step-by-step explanation:

Volume of a circular right cone is:

V(c)  = (1/3)*Area of the circular base * h

Where h is the height of the cone, then

V(c)  =  (1/3) * π * r² * h

And  we have that  V(c) = 108*π

Then:

108 * π  =  (1/3) * π * r² * h                  (1)

We know diameter of the circular base is 12 units, according to that

r =  d/2     ⇒  r = 12/2     r = 6 units

Then:

108 * π  [ cubic units ]  =  (1/3) * π * (6)² * h  [square units] [ units of length]

When simplifying we have to take into account that in order to keep last equation h needs to have units of length  

Therefore:

108  =  (1/3) * 36 * h

h = ( 108* 3 )/ 36

h  = 9 units of length

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3 years ago
Please Help!!! I've been stuck on this question for the longest and none of the answer choices are the answer I keep on getting.
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I think the answer might be <em>B 30.4 ft</em> if it not it might be <em>C 161 ft</em>

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Find The area of the triangle given that sin(C) equals 1/2 round the answer to the nearest whole number
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Does the question include a picture?
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3 years ago
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