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
mylen [45]
3 years ago
8

Help! what is the surface area of the figure?

Mathematics
1 answer:
rjkz [21]3 years ago
3 0

Answer:

220 cm^2

Step-by-step explanation:

You might be interested in
What does x bar mean in calculus?
Lelechka [254]
X bar means "mean"..
7 0
3 years ago
A square room has walls that are each 6 feet long. How much carpet would be needed to cover the floor of this room.
Helga [31]
36 feet of carpet cause its a square so 6x6 is 36
4 0
3 years ago
Read 2 more answers
HELP ME PLEASE!!! IMPORTANT!
Masteriza [31]

Answer:

≤  Note: without the equal

Step-by-step:

√7 =2.645

14/5 = 2.8

6 0
3 years ago
Read 2 more answers
The following data were collected from 12 rain gauges in a park. Build a 95% CI for the mean rainfall at the park.
dybincka [34]

Answer:

Critical values:t_{\alpha/2}=-2.201 t_{1-\alpha/2}=2.201

95% confidence interval would be given by (3.646;4.472)

Step-by-step explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The data is:

4.65 3.89 2.73 4.35 3.80 4.86 4.33 4.37 4.76 4.05 3.05 3.87

2) Compute the sample mean and sample standard deviation.

In order to calculate the mean and the sample deviation we need to have on mind the following formulas:  

\bar X= \sum_{i=1}^n \frac{x_i}{n}

s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}

=AVERAGE(4.65,3.89,2.73, 4.35, 3.8, 4.86, 4.33, 4.37, 4.76, 4.05, 3.05, 3.87)

On this case the average is \bar X= 4.059

=STDEV.S(4.65,3.89,2.73, 4.35, 3.8, 4.86, 4.33, 4.37, 4.76, 4.05, 3.05, 3.87)

The sample standard deviation obtained was s=0.6503

3) Find the critical value t* Use the formula for a CI to find upper and lower endpoints

In order to find the critical value we need to take in count that our sample size n =12 <30 and on this case we don't know about the population standard deviation, so on this case we need to use the t distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. The degrees of freedom are given by:

df=n-1=12-1=11

We can find the critical values in excel using the following formulas:

"=T.INV(0.025,11)" for t_{\alpha/2}=-2.201

"=T.INV(1-0.025,11)" for t_{1-\alpha/2}=2.201

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}  

And we can use Excel to calculate the limits for the interval

Lower interval : "=4.059 -2.201*(0.6503/SQRT(12))" =3.646

Upper interval :  "=4.059 +2.201*(0.6503/SQRT(12))" =4.472

So the 95% confidence interval would be given by (3.646;4.472)

8 0
3 years ago
What is the variable of p and k explain please
scoundrel [369]
For the P=-4
what you do is subtracting 6 to the 38 you will have -8p=32 then you will divide-8 to both sides and your answer will be p=-4
check 6-8(-4)=38
6+32=38
38=38


i got K=5.6
what you do is add 13 to the 15 and you will have 28=5k then you will divide 5 to both sides and you will have k=5.6
check 15=5(5.6)-13
15=28-13
15=15
3 0
3 years ago
Other questions:
  • Find an equation of the tangent plane to the surface at the point . Question 14 options: a) b) c) d) e)
    9·1 answer
  • ¿Cuál es el área de un círculo cuya circunferencia mide 7π cm?
    6·1 answer
  • The measure of two supplementary angles are 12q-9 and 8q+14 find the measures of the angles
    9·1 answer
  • What the health I have no clue help! Number 8
    10·1 answer
  • Group Radii of Tomatoes (centimeters)
    9·1 answer
  • What is X+y(2x-3)=18
    6·1 answer
  • If sod costs $0.39 per square foot, how much will it cost to sod the lawn of 90ft and 180ft?
    8·1 answer
  • Two isosceles triangles are similar. The first
    11·1 answer
  • A segment has the following coordinates A(6, 7), B(4, -3). Find the coordinates of the midpoint of segment AB
    13·2 answers
  • A test has 20 questions.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!