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
eimsori [14]
3 years ago
10

Is 0.135135135135...... a irrational number?

Mathematics
2 answers:
Elis [28]3 years ago
7 0
It is not an irrational number.  In this number, the pattern is 135 repeating.  Since it repeats in a certain pattern, it is rational.
grigory [225]3 years ago
5 0
An irrational number is a number that cannot be written in the form a/b or fractional form
this is repeating so we can just draw a vinculum over the repeting part (135)
it would be represented as <u />
<u />   ___
0.135

this is a rational number
You might be interested in
Compare.Write &lt;,&gt;,or = 25 lb____ 384 oz
raketka [301]
25 lb > 384 oz because 25 pounds is 400 ounces.
5 0
3 years ago
Read 2 more answers
Pls helpASAP!!!<br> 3x+ 12 = 2(8+ 4x)
mojhsa [17]

3x+12=2(8+4x) distribute

3x+12=16+8x\\ collect like-terms

3x-8x=16-12\\-5x=4\\x=-\frac{4}{5}=-0.8

5 0
3 years ago
Read 2 more answers
Dual-energy X-ray absorptiometry (DXA) is a technique for measuring bone health. One of the most common measures is total body b
sesenic [268]

Answer:

\bar d=\frac{\sum_{i=1}^n d_i}{n}=-0.001

s=\sqrt{\frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}}=0.0095

-The sample is too small to make judgments about skewness or symmetry.

H0:\mu_{1}=\mu_{2}

H1:\mu_{1} \neq \mu_{2}

t=\frac{1.173-1.174}{\sqrt{\frac{0.1506^2}{8}+\frac{0.1495^2}{8}}}=-0.013

p_v =2*P(t_{(14)}

So the p value is a very high value and using any significance level for example \alpha=0.05, 0,1,0.15 always p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and a we don't have a significant difference between the two means.

Step-by-step explanation:

First we need to find the difference defined as:

(Operator 1 minus Operator 2)

d1=1.326-1.323=0.003      d2=1.337-1.322=0.015

d3=1.079-1.073=0.006     d4=1.229-1.233=-0.004

d5=0.936-0.934=0.002   d6=1.009-1.019=-0.01

d7=1.179-1.184=-0.005      d8=1.289-1.304=-0.015

Now we can calculate the mean of differences given by:

\bar d=\frac{\sum_{i=1}^n d_i}{n}=-0.001

And for the sample deviation we can use the following formula:

s=\sqrt{\frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}}=0.0095

Describe the distribution of these differences using words. (which one is correct)

We can plot the distribution of the differences with the folowing code in R

differences<-c(0.003,0.015,0.006,-0.004,0.002,-0.01,-0.005,-0.015)

hist(differences)

And we got the image attached. And we can see that the distribution is right skewed but we don't have anough info to provide a conclusion with just 8 differnences.

-The sample is too small to make judgments about skewness or symmetry.

Use a significance test to examine the null hypothesis that the two operators have the same mean. Give the test statistic. (Round your answer to three decimal places.)

\bar X_{1}=1.173 represent the mean for the operator 1

\bar X_{2}=1.174 represent the mean for the operator 2

s_{1}=0.1506 represent the sample standard deviation for the operator 1

s_{2}=0.1495 represent the sample standard deviation for the operator 2

n_{1}=8 sample size for the operator 1

n_{2}=8 sample size for the operator 2

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 means for the two groups are the same, the system of hypothesis would be:

H0:\mu_{1}=\mu_{2}

H1:\mu_{1} \neq \mu_{2}

If we analyze the size for the samples both are less than 30 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}}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)

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.

Calculate the statistic

We can replace in formula (1) like this:

t=\frac{1.173-1.174}{\sqrt{\frac{0.1506^2}{8}+\frac{0.1495^2}{8}}}=-0.013

Statistical decision

For this case we don't have a significance level provided \alpha, but we can calculate the p value for this test. The first step is calculate the degrees of freedom, on this case:

df=n_{1}+n_{2}-2=8+8-2=14

Since is a bilateral test the p value would be:

p_v =2*P(t_{(14)}

So the p value is a very high value and using any significance level for example \alpha=0.05, 0,1,0.15 always p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and a we don't have a significant difference between the two means.

8 0
3 years ago
Need help solving these, if anyone is able to help, then please feel free! Help please ❤
crimeas [40]
# 3 is .4 because u multiply .2*.2
4 0
3 years ago
Need help with this <br> (I think it’s 49 but I’m not sure)
faust18 [17]

Answer:

Its 49

Step-by-step explanation:

Can i get brainliest

3 0
3 years ago
Other questions:
  • 5x +4y=8 how do you transform that equation into Y=mx+b​
    6·1 answer
  • A pair of boots originally cost $124. Now they are on sale for 75% of the original price. What is the sale price of the boots?
    13·2 answers
  • A. 60°
    13·2 answers
  • Find the volume of a square pyramid with a base area of 18 in.² and a height of 6 in
    7·1 answer
  • Find the product.<br><br> (6xyz4)(5xy3)<br><br> PLEASE HELP!!! ASAP!!
    15·2 answers
  • A triangle has a perimeter of 58 cm the longest side is twice as long as the shortest side the third side is 10cm longer than th
    14·1 answer
  • Plz help! will give brainliest!!!
    5·1 answer
  • PLZ RESPOND AS SOON AS POSSIBLE
    11·2 answers
  • HELP ASAP
    11·1 answer
  • Sally is buying tiles for her bathroom floor. Each tile is 1 foot by 1 foot. Her bathroom floor measures 20 feet by 7 feet.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!