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Kobotan [32]
3 years ago
12

15n^2 - 4n + ( -2n+n )

Mathematics
1 answer:
jonny [76]3 years ago
8 0
The answer is :
15n^2-5n
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Error Analysis Your friend says that the volume of this sphere is 44.58
Maurinko [17]

Answer:

  • the given dimension was used as the radius
  • 5.57 m³

Step-by-step explanation:

The volume of a sphere can be found using the formula ...

  V = 4/3πr³ . . . . . where r is the radius

__

The figure points to a diameter line and indicates 2.2 m. The arrowhead is in the middle of a radius line, making it easy to interpret the dimension as the radius of the sphere.

If 2.2 m is used as the radius, the volume is computed to be ...

  V = 4/3π(2.2 m)³ ≈ 44.58 m³

This agrees with your friend's volume, suggesting the diameter was used in place of the radius in the computation.

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The correct volume, using 2.2 m as the diameter, is ...

  V = 4/3π(1.1 m)³ ≈ 5.57 m³

6 0
2 years ago
can someone help me please
kotegsom [21]

Answer:

i think its b

Step-by-step explanation:

4 0
3 years ago
A cone has a volume of 1,256 cubic centimeters. If the height of the cone is 12 centimeters, what is the radius of the base in c
luda_lava [24]

Answer:

The radius 10 cm

Step-by-step explanation:

∵ The volume of the cone = 1/3 πr²h

∵ v = 1256 cm³

∵ h = 12 cm

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∴ r² = 1256 × 3/12π = 100 cm

∴ r = √100 = 10 cm

5 0
3 years ago
The diagram shows a right-angled triangle.
Margarita [4]
1/sin(38)*7=11.4
Hope it helps
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3 years ago
Please help ASAP<br><br> I will give brainleist and 100 extra points
bearhunter [10]

Answer:

Possibly C, but im sorry if im wrong

Step-by-step explanation:

7 0
3 years ago
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