1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
k0ka [10]
3 years ago
10

Can someone please help me answer this question.?

Mathematics
1 answer:
SashulF [63]3 years ago
3 0

Answer:

d=8.0 meters

Step-by-step explanation:

The volume of a cone is given by

V = 1/3 pi r^2 h

We are given the volume and the height

117.23 and the height 7

117.23 = 1/3 *3.14 *r^2 * 7

117.23 = 7.3266666666 *r^2

Divide each side by 7.3266666666

117.23/7.3266666666 = 7.3266666666 *r^2/7.3266666666

16.00045496 = r^2

Take the square root of each side

sqrt(16.00045496) =sqrt( r^2)

4.000 = r

We found the radius but it wants the diameter

d = 2*r

d =2*4.0

d=8.0 meters

You might be interested in
Part.2 Pls I need help the steps and the answer
lina2011 [118]
Multiply 10 cm by 0.4 and mult. 30 cm by 0.4 also:

The height of the smaller triangle is then 4 cm and the length of the base is 12 cm.
6 0
3 years ago
How can the term information best be defined? Question 2 options: a) Related concepts b) Interpreted, organized, or structured d
IrinaK [193]

Answer:

b) Interpreted, organized, or structured data

Step-by-step explanation: from my notes

5 0
3 years ago
find the slope of the line that contains the following points A : [ 17 , -12 ] and [ 17 , 8 ] and B [ 6 , -2 ] and [ -3 , 1 ]
Svetradugi [14.3K]
1/9 because i you plug in two of the points into y2 -y1 over x2 -x1 thats what you get.
4 0
3 years ago
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp
motikmotik

Answer:

The 95% confidence interval for the population mean rating is (5.73, 6.95).

Step-by-step explanation:

We start by calculating the mean and standard deviation of the sample:

M=\dfrac{1}{n}\sum_{i=1}^n\,x_i\\\\\\M=\dfrac{1}{50}(6+4+6+. . .+6)\\\\\\M=\dfrac{317}{50}\\\\\\M=6.34\\\\\\s=\sqrt{\dfrac{1}{n-1}\sum_{i=1}^n\,(x_i-M)^2}\\\\\\s=\sqrt{\dfrac{1}{49}((6-6.34)^2+(4-6.34)^2+(6-6.34)^2+. . . +(6-6.34)^2)}\\\\\\s=\sqrt{\dfrac{229.22}{49}}\\\\\\s=\sqrt{4.68}=2.16\\\\\\

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=6.34.

The sample size is N=50.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

s_M=\dfrac{s}{\sqrt{N}}=\dfrac{2.16}{\sqrt{50}}=\dfrac{2.16}{7.071}=0.305

The degrees of freedom for this sample size are:

df=n-1=50-1=49

The t-value for a 95% confidence interval and 49 degrees of freedom is t=2.01.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=2.01 \cdot 0.305=0.61

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 6.34-0.61=5.73\\\\UL=M+t \cdot s_M = 6.34+0.61=6.95

The 95% confidence interval for the mean is (5.73, 6.95).

4 0
3 years ago
Plz help with this I don’t know what to do
kozerog [31]

Answer:

Just guessing here but would the bottom be 4,8,12,16,20 maybe since it is going by 4 then you do the same for the top since it is going by 3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Jon and Lexi are playing a marble game. According to their rules, 4 points are awarded for each red marble collected and 7 point
    10·2 answers
  • Earth Science Chapter 1<br> Cust
    8·1 answer
  • What is the best estimate of the measure of the angle shown?
    7·2 answers
  • Calculate the mean 20,12,29,15,49
    7·2 answers
  • Solve the equation: 3(x−3) + 2x= −49
    14·1 answer
  • Plz help me with 45/48 show work
    5·2 answers
  • 3 km/min ≈ ? mi/h please hurry
    7·1 answer
  • How many terms of the arithmetic sequence {-4,-2, 0, ....} will give a sum of 500?
    11·1 answer
  • If 50 out of 100 squares are shaded in, what is the resulting ratio? Express your answer as a fraction, decimal, and a percent.
    5·2 answers
  • If m∠4 = 100°, what is m∠5?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!