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
GarryVolchara [31]
3 years ago
9

Find the nth term or this sequence 3 8 13 18 23

Mathematics
2 answers:
netineya [11]3 years ago
4 0
Solutions 
3 8 13 18 23 

The pattern is add 5 each time. 
3 + 5 = 8 
8 + 5 = 13 
13 + 5 = 18 
18 + 5 = 23 
23 + 5 = 28 
28 + 5 = 33
33 + 5 = 38 
38 + 5 = 43 ⇒ The 9th term is 43

43 is the answer 

True [87]3 years ago
4 0
The pattern is adding 5.
1st:3
2nd:8
3rd:13
4th:18
5th:23
6th:28
7th:33
8th:38
9th:43
You might be interested in
Please answer if possible
MrRissso [65]

Answer:

A ≈ 127.39 ft^{2}

Step-by-step explanation:

A = a^{2}+2a\sqrt{\frac{a^{2}}{4}+h^{2}  }

a (base edge) = 6

h (height) = 7

6 0
2 years ago
How to find the y-intercept from a table AND from a graph.
ExtremeBDS [4]

Answer:

When Finding the Y-Intercept from a Graph and Table, you are searching for the point of intersection between the equation and the y-axis. When finding the Y-Intercept from a Graph, you should find where the line from the equation crosses the y-axis. The point where the equation crosses the y-axis is the Y-Intercept.

Step-by-step explanation:

6 0
2 years ago
What is the missing dimension of a parallelogram if h=5 1/4feet and A=12feet
alexandr1967 [171]
The missing is the base 
A=bh
12= 5.25b
Divide both sides by 5.25
b=2.29 ft
3 0
2 years ago
in this question , use 1 foot equalto 12 inches 1 inch equalto 2.5 centimetres change 5 feet 8 inches to centimetres
nasty-shy [4]

Answer: 170 cm

Step-by-step explanation: 5x12=60. 60+8=68. 68x2.5=170.

5 0
3 years ago
In a random sample of 80 teenagers, the average number of texts handled in a day is 50. The 96% confidence interval for the mean
Nastasia [14]

Answer:

a) \bar X =\frac{46+54}{2}=50

And the margin of error is given by:

ME= \frac{54-46}{2}= 4

The confidence level is 0.96 and the significance level is \alpha=1-0.96=0.04 and the value of \alpha/2 =0.02 and the margin of error is given by:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

We can calculate the critical value and we got:

z_{\alpha/2} = 2.05

And if we solve for the deviation like this:

\sigma = ME * \frac{\sqrt{n}}{z_{\alpha/2}}

And replacing we got:

\sigma =4 *\frac{\sqrt{80}}{2.05} =17.45

b) ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}=2.05 *\frac{17.45}{\sqrt{160}}=2.828

And as we can see that the margin of error would be lower than the original value of 4, the margin of error would be reduced by a factor \sqrt{2}

Step-by-step explanation:

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".  

\bar X represent the sample mean  

\mu population mean (variable of interest)  

\sigma represent the population standard deviation  

n=80 represent the sample size  

Solution to the problem

Part a

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

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)  

For this case we can calculate the mean like this:

\bar X =\frac{46+54}{2}=50

And the margin of error is given by:

ME= \frac{54-46}{2}= 4

The confidence level is 0.96 and the significance level is \alpha=1-0.96=0.04 and the value of \alpha/2 =0.02 and the margin of error is given by:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

We can calculate the critical value and we got:

z_{\alpha/2} = 2.05

And if we solve for the deviation like this:

\sigma = ME * \frac{\sqrt{n}}{z_{\alpha/2}}

And replacing we got:

\sigma =4 *\frac{\sqrt{80}}{2.05} =17.45

Part b

For this case is the sample size is doubled the margin of error would be:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}=2.05 *\frac{17.45}{\sqrt{160}}=2.828

And as we can see that the margin of error would be lower than the original value of 4, the margin of error would be reduced by a factor \sqrt{2}

5 0
2 years ago
Other questions:
  • I am confused on numbers 25 and 29, the instructions are at the top.
    13·1 answer
  • How many square feet of outdoor carpet will we need for this hole?
    9·2 answers
  • An article reports that 1 in 500 people carry the defective gene that causes inherited colon cancer. In a sample of 2000 individ
    15·1 answer
  • When do you use a solid line for graphing a linear inequality?
    14·1 answer
  • What is the algebraic expression of 8​
    8·1 answer
  • Is this a function or not a function?
    13·1 answer
  • The Napoli family combined two bags of dry cat food in a plastic container. One bag had 5/
    7·1 answer
  • The observation deck of the Willis Tower in Chicago is 412 meters above the ground. On a scale drawing, this distance is 82.4 ce
    8·2 answers
  • Solve the quadratic equation below<br><br> (3x+9)(x−4)=0
    9·2 answers
  • Santa needs 600 toys. 175 toys have already
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!