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
Nikolay [14]
3 years ago
7

What is - 1/8 plus 3/8

Mathematics
2 answers:
Firlakuza [10]3 years ago
5 0

Answer:

1/4

Step-by-step explanation:

-1/8 + 3/8 = 2/8 = 1/4

nydimaria [60]3 years ago
3 0

Answer:

2/8

Step-by-step explanation:

you can reorder the equation so from -1/8 + 3/8

it looks like this (+)3/8 - 1/8

hope this helps

You might be interested in
Who is 5 times 3 related to 5 / 1/3
olya-2409 [2.1K]

Answer:

5 times 3 and 5 divide by 1/3  yield the same result - see below.

Step-by-step explanation:

When we divide by a fraction we invert it and then multiply so:

5 / 1/3

= 5 * 3/1

= 5 * 3.

3 0
3 years ago
According to a Washington Post-ABC News poll, 331 of 502 randomly selected U.S. adults interviewed said they would not be bother
k0ka [10]

Answer:

z=\frac{0.659 -0.5}{\sqrt{\frac{0.5(1-0.5)}{502}}}=7.124  

p_v =P(z>7.124)=5.24x10^{-13}  

So the p value obtained was a very low value and using the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of interest is significantly higher than 0.5.  

Step-by-step explanation:

Data given and notation

n=502 represent the random sample taken

X=331 represent the adults that said they would not be bothered if the NAtional security agency

\hat p=\frac{331}{502}=0.659 estimated proportion of people who would not be bothered if the NAtional security agency

p_o=0.5 is the value that we want to test

\alpha=0.01 represent the significance level

Confidence=99% or 0.99

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is higher than the majority of 0.5:  

Null hypothesis:p\leq 0.5  

Alternative hypothesis:p > 0.5  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.659 -0.5}{\sqrt{\frac{0.5(1-0.5)}{502}}}=7.124  

Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level provided \alpha=0.01. The next step would be calculate the p value for this test.  

Since is a right tailed test the p value would be:  

p_v =P(z>7.124)=5.24x10^{-13}  

So the p value obtained was a very low value and using the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of interest is significantly higher than 0.5.  

4 0
3 years ago
Find total surface area
earnstyle [38]
7x9 = 63
63x2 = 126
126 is the surface area
5 0
3 years ago
Please help!<br><br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B4.2%7D%7B7%5Cfrac%7B5%7D%7B7%7D%20%7D%20%3D%20%20%5Cfrac%7B3%5C
emmasim [6.3K]

Answer:

d = 40/7

Step-by-step explanation:

Solve for d:

0.544444 = 28/(9 d)

0.544444 = 49/90:

49/90 = 28/(9 d)

49/90 = 28/(9 d) is equivalent to 28/(9 d) = 49/90:

28/(9 d) = 49/90

Take the reciprocal of both sides:

(9 d)/28 = 90/49

Multiply both sides by 28/9:

Answer:  d = 40/7

5 0
3 years ago
Which best defines the term empirical evidence?
sergey [27]

Answer:

the fourth answer, hope this can help

5 0
3 years ago
Read 2 more answers
Other questions:
  • I need help finding the mean, median, mode, and range of 25.2, 45.5, 61.7, and 28.3
    11·1 answer
  • Classify the equation, 7x+6=7x-5, as having one solution, no solution, or infinitely many solutions.
    5·1 answer
  • M stands for a whole number greater than 10 and less than 20
    7·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Cfrac%7B2x%2B4%7D%7Bx%5E%7B2%7D-2x-8%20%7D" id="TexFormula1" title="\frac{2x+4}{x^{2}-2x-8 }
    13·1 answer
  • What is the quotient of 3<br> 4<br> ÷ 1<br> 5<br> ?
    13·2 answers
  • If you divided a number by 0.5, the result would be A. twice the original number. B. half of the original number. C. a fifth of
    8·2 answers
  • Pls help Homework is due tomorrow and Im not sure about the answer!
    8·1 answer
  • Use a number line to solve.<br> 0.03 -0.92<br> a. -0.89<br> b. -0.95<br> C. 0.95<br> d. 0.89
    13·1 answer
  • Look at the picture love
    5·1 answer
  • Which of the following statements are represented by
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!