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
andre [41]
2 years ago
8

If a sphere has radius of 13 centimeters what is the volume

Mathematics
1 answer:
Travka [436]2 years ago
7 0
The answer is 8788pi/3 Hope this helps! Mark brainly please!

You might be interested in
<img src="https://tex.z-dn.net/?f=42%20%5Ctimes%2042%20%5Ctimes%2029%20%3D%20" id="TexFormula1" title="42 \times 42 \times 29 =
Blababa [14]
The correct answer is 51156



Hope this helps :)
6 0
3 years ago
Arianna runs up 4 flights of stairs and then runs down 4 flights of stairs. Does this situation represent additive inverses?Expl
MariettaO [177]

Yes due to the fact that additive inverse is the oppsite. so she runs up +4 and runs down -4.

6 0
2 years ago
A random sample of 49 measurements from one population had a sample mean of 15, with sample standard deviation 5. An independent
kotykmax [81]

Answer:

Comparing the p value with the significance level \alpha=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and the difference between the two groups is significantly different.  

Step-by-step explanation:

\bar X_{1}=15 represent the mean for sample 1

\bar X_{2}=18 represent the mean for sample 2

s_{1}=5 represent the sample standard deviation for 1  

s_{f}=6 represent the sample standard deviation for 2  

n_{1}=49 sample size for the group 2  

n_{2}=64 sample size for the group 2  

\alpha=0.01 Significance level provided

t would represent the statistic (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to check if the difference in the population means, the system of hypothesis would be:  

Null hypothesis:\mu_{1}-\mu_{2}=0  

Alternative hypothesis:\mu_{1} - \mu_{2}\neq 0  

We don't have the population standard deviation's, so for this case is better apply a t test to compare means, and the statistic is given by:  

t=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)

And the degrees of freedom are given by df=n_1 +n_2 -2=49+64-2=111  

t-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

With the info given we can replace in formula (1) like this:  

t=\frac{(15-18)-0}{\sqrt{\frac{5^2}{49}+\frac{6^2}{64}}}}=-2.897

P value

Since is a bilateral test the p value would be:  

p_v =2*P(t_{111}  

Comparing the p value with the significance level \alpha=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and the difference between the two groups is significantly different.  

7 0
3 years ago
How do I find (10x + 2) °
Deffense [45]

Answer:

multiply 10 with the value given for x and add 2 to the result

5 0
2 years ago
Read 2 more answers
Find the value of y.
stepladder [879]

Answer:

10

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • ????????????????????
    6·1 answer
  • What is the solution to the system of equations? Use the substitution method. {y=2x+43x−6y=3
    9·1 answer
  • What property is shown in the equation 7x divided by 1 = 7x
    8·1 answer
  • What is the first quartile of this data set? 11, 12, 15, 16, 17, 19, 22, 24, 29, 33, 38
    12·1 answer
  • Investors buy a studio apartment for $240,000. Of this amount, they have a down payment of
    11·1 answer
  • Everyone learns differently. Some people like to use models and tools to help them learn math concepts. Many people like to use
    6·1 answer
  • Can somebody help me plsssss
    10·1 answer
  • How many solutions does the following equation have? 2 x-4=4-2x
    8·1 answer
  • An art class is making a mural for their school which has a triangle drawn in the middle. The length of the bottom of the triang
    5·1 answer
  • Which expression represents four less than half a number, n? (show your work)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!