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Alex
3 years ago
13

Find the volume of a right circular cone that has a height of 4.2 m and a base with a

Mathematics
1 answer:
tigry1 [53]3 years ago
5 0

Answer:

50.84353551

Step-by-step explanation:

the volume of cone= 1/3 × πr²h

putting the value and calculating,

i get the answer.

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What is the volume of a hemisphere with a diameter of 47.7in, rounded to the nearest tenth of a cubic inch
Reptile [31]

Answer:

28413.4 in (radius} = diameter divided by 2 = 47.7 divided by 2 =23.85

radius=  2

diameter

​ =  2

47.7

=23.85

5 0
2 years ago
A video lasts 6.44 minutes about how long does the video last, rounded to the nearest minute.
Umnica [9.8K]
<span>The video last for about 6.44 minutes. Rounded to the nearest minutes
=> So let’s simplify the given equation
=> 6.44 minutes in where 6 = minutes, 44 = seconds.
Now, we have our minute’s value which is 6, let us start the rounding
=> 6.44, the number that follows the 6 is a decimal number which is 4.
4 is below 5, so we need to follow the rounding rule. This will round down.
=> 6 minutes
Therefore, the video lasts for about 6 minutes.


</span>



8 0
3 years ago
The sum of the first 150 negative integers is represented using the expression What is the sum of the first 150 negative integer
Kamila [148]

Answer:

C. -11,325

Step-by-step explanation:

  • To know the answer, is convenient to replace some values of "n" in the sum \sum_{(n=1)}^{150}[-1-(n-1)].
  • The result would appear after adding up every value of the expression \sum_{(n=1)}^{150}[-1-(n-1)] when n=1,2,3.....,150.
  • When n=1, the expression takes the value of (-1): [-1-(1-1)]= (-1)-0=-1.
  • When n=2, the expression takes the value of (-2): [-1-(2-1)]=-1-1=-2.
  • Following this way, for every n, we will obtain -n, then, the sum will be: -1-2-3-4-5-6-...-150. This sum can actually be expressed as \sum_{n=1}^{150}(-n), which is the result of solving the initial expression of the sum -1-(n-1)=-1-n+1=-n.
  • Finally, the sum of n=-1 to n=-150 equals -11,325.
7 0
3 years ago
Read 2 more answers
Reagan is using geometry software to construct a regular pentagon by using rotations.
LekaFEV [45]
I would assume that he's using a 90° rotation.
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3 years ago
6a + 3 in Number of Terms​
Pani-rosa [81]

Answer:

2 a term is something between and operator so the operators are 6a and 3

8 0
2 years ago
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