Wednesday

December 17, 2014

December 17, 2014

Total # Posts: 18,863

**Anatomy**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*June 13, 2014*

**science cant figure it out**

Since this is not my area of expertise, I searched Google under the key words "pace of evolutionary change" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=pace+of+evolutionary+change&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
*June 12, 2014*

**algebra (?)**

What is your question?
*June 12, 2014*

**Math**

It would help if you proofread your questions before you posted them. Online "^" is used to indicate and exponent, e.g., x^2 = x squared. Online, “*” is used to indicate multiplication. 7-9. Correct. 10. There is no equation. Equation requires equal sign...
*June 10, 2014*

**Math**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*June 10, 2014*

**Maths**

How do you expect use to help you on this message board?
*June 10, 2014*

**algebra**

4^3 - 5(4)^2 + 4 = 64 + 80 + 4 = ?
*June 10, 2014*

**statistics (?)**

What "lines below"?
*June 9, 2014*

**statistics**

There is no relationship.
*June 9, 2014*

**Math (?)**

Data missing.
*June 9, 2014*

**biology**

After 30 minutes = 2, after 60 = 4, after 90 = 8.
*June 9, 2014*

**biology**

After 30 minutes = 2, after 60 = 4, after 90 = 6.
*June 9, 2014*

**algebra (?)**

What is your question? With two unknowns, cannot solve without more data.
*June 8, 2014*

**Psychology**

If you cannot understand the above site, possibly this might help. Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n...
*June 8, 2014*

**algebra (?)**

What following?
*June 8, 2014*

**math**

What criteria would you use to indicate "better"?
*June 8, 2014*

**Mathematics (?)**

No graph. No question.
*June 8, 2014*

**Math**

Right.
*June 8, 2014*

**Math**

3x + 40 = 2(x+17) = 2x + 34 x = -6 4(-6 -9) = ?
*June 8, 2014*

**Math (?)**

What statements? You cannot copy and paste here. Just guessing: Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to your Z scores.
*June 8, 2014*

**Stats**

a - d. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores. e. Reverse process, starting with .25 and its Z score
*June 7, 2014*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.01 for two-tailed) and its Z score (score in terms of standard deviations). 98% = mean ± 2.33 SEm SEm = SD/√n
*June 6, 2014*

**math-roskdale (?)**

Scale lacking. The Z score is the raw score in terms standard deviations (SD). It is one type of standard score, cutting off the same percentages for any normal distribution. Z = (score-mean)/SD Find the mean first = sum of scores/number of scores Subtract each of the scores ...
*June 6, 2014*

**math**

95% = mean ± 1.96 SEm SEm = SD/√n
*June 5, 2014*

**statistics**

https://www.google.com/search?client=safari&rls=en&q=difference+between+small+and+large+samples&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*June 5, 2014*

**algebra**

Do you have a typo? "4x-4x" = 0 They cancel each other out.
*June 5, 2014*

**math question**

Agree
*June 5, 2014*

**English**

I would pick B.
*June 5, 2014*

**math (?)**

What is "it"?
*June 5, 2014*

**Math**

The Richter Scale is logarithmic, 5-2 = 3. 10^3 = 1000
*June 5, 2014*

**lıfe scıence (?)**

What kind of milk and cereal? How big is a serving?
*June 5, 2014*

**lıfe scıences**

Since this is not my area of expertise, I searched Google under the key words "importance of sodium in diet" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=importance+of+sodium+in+diet&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, ...
*June 5, 2014*

**lıfe scıences (?)**

What packet?
*June 5, 2014*

**MATH**

Multiply by 4. 6x + x - 2 = 40 Combine terms. 7x = 42 You should be able to take it from here.
*June 4, 2014*

**math (?)**

I have no idea what you are referring to. Lack needed data.
*June 4, 2014*

**random question about writing**

If nobody is available to proofread your work, you can do this yourself. After writing your material, put it aside for a day — at least several hours. (This breaks mental sets you might have that keep you from noticing problems.) Then read it aloud as if you were reading ...
*June 3, 2014*

**math**

Z = (score-mean)/SD Consult your table with the Z score. Multiply by 60.
*June 3, 2014*

**statistics**

Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
*June 3, 2014*

**Scientific nottion**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate and exponent, e.g., x^2 = x squared. 3.0 * 10^6
*June 3, 2014*

**Science Plzz Help**

disagree
*June 3, 2014*

**math (?)**

No column data given. Cannot copy and paste here.
*June 3, 2014*

**math!!**

8.58/9 = ?
*June 3, 2014*

**statistics**

From your data, it looks like 84 took politics and 16 took history. There is no information to indicate how many took both.
*June 3, 2014*

**Meiosis and mitosis**

Only half, so combining egg and sperm does not double the number of chromosomes.
*June 3, 2014*

**algebra**

Total bill = 1.13 * meal
*June 3, 2014*

**biology (?)**

Who is mating with whom? For example AA with AA, all offspring would be AA.
*June 3, 2014*

**PLEASE HELP CHECK ANSWER SCIENCE**

agree
*June 2, 2014*

**college algebra**

If w = width, then length = w + 20 w(w+20) = 8000 Solve for w, then length.
*June 2, 2014*

**Two numbers with exponents??**

When multiplying, add the exponents. 3^36
*June 2, 2014*

**Science Plzz Help**

agree.
*June 2, 2014*

**Algebra**

We cannot graph here. Put various values for x and solve for y. Put these on a scatterplot to graph. I'll start you out. if x = 0, 4y > 20, y > 5.
*June 2, 2014*

**algebra**

Assuming there is no difference between capitals and lower case: When dividing exponents, you subtract their value. x^7 h^9
*June 2, 2014*

**math (?)**

It would help if you proofread your questions before you posted them. No data on shirt. If you mean shoes, (1-.30)45 = ?
*June 2, 2014*

**algebra**

Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
*June 1, 2014*

**Science**

1. A 2. C 3. D 4. B 5. D
*June 1, 2014*

**SCI 207 (?)**

Lacking data. What cycles?
*June 1, 2014*

**Science**

Since this is not my area of expertise, I searched Google under the key words "abiotic factor ecosystem" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=abiotic+factor+ecosystem&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*June 1, 2014*

**biology**

Since this is not my area of expertise, I searched Google under the key words "insulin glycogen homeostasis" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=insulin+glycogen+homeostasis&ie=UTF-8&oe=UTF-8 In the future, you can find...
*May 31, 2014*

**Health insurance (?)**

What is your question?
*May 30, 2014*

**Statistic**

To do the calculations yourself for 3 and 4: Range = highest score - lowest Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get ...
*May 30, 2014*

**Algebra**

-9 -3 + 9 - 7 = -10
*May 30, 2014*

**Algebra**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. (-5)(-8) - (6*6) = 40 - 36 = 4
*May 30, 2014*

**Algebra/I think I did this wrong**

Z = (score-mean)/SD = (180-170)/5 = 2 a. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability between score and mean for Z score. Multiply by 50 ≠ 29 b. Z = (176-170)/5 = 6/5...
*May 30, 2014*

**Simplify Polynomials**

Don't know about "7ft1". Combine like terms. -2x^2 + x + 3
*May 30, 2014*

**Algebra 2**

What are your formulas?
*May 30, 2014*

**bio**

Is the PKU gene represented by P or p? If the latter, C is correct for the last statement. Cannot respond to first two questions, because parental genotypes are not given.
*May 30, 2014*

**Algebra 2**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
*May 29, 2014*

**statistics**

https://www.google.com/search?client=safari&rls=en&q=confidence+intervals+inferential+statistics&ie=UTF-8&oe=UTF-8
*May 29, 2014*

**Math**

Can't draw a picture here, but 16 posts will be needed. Remember that the corner posts will each be used for two sides.
*May 29, 2014*

**math needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*May 29, 2014*

**Law**

Since this is not my area of expertise, I searched Google under the key words "James Fyfe deadly force" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=James+Fyfe+deadly+force&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*May 29, 2014*

**statistics**

Assuming the sample size is the same, r^2 accounts for the amount of variability explained by r. r^2 = .04 r^2 = .16
*May 29, 2014*

**math (?)**

Data missing.
*May 29, 2014*

**math**

L = 3W - 40 L * W = 6400 (3W-40) * W = 6400 Solve for W, then L.
*May 29, 2014*

**statistics (oops)**

Sorry, mode should be less than 90.
*May 29, 2014*

**statistics**

I'm not sure what you are asking. It would help if you proofread your questions before you posted them. Positively skewed? Mode should be greater than 100.
*May 29, 2014*

**Science**

Your text must be defining B or the numbers. We do not have that data.
*May 29, 2014*

**math**

1500 * .21 = ?
*May 28, 2014*

**Psy 270**

Do you want to be a psychologist? If so, what area of psychology interests you? To give some ideas of applications ink one's personal life, this source might help: http://drdavespsychologypage.homestead.com/Line-on-Life-Articles-.html
*May 28, 2014*

**science**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*May 27, 2014*

**science (?)**

No servings indicated.
*May 27, 2014*

**statistics**

With only 13 employees, it would be best to use X^2 (Chi-square) test. Ho: no diference X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n = number of ...
*May 27, 2014*

**Math**

Z = (score-mean)/SEm SEm = SD/√n Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
*May 27, 2014*

**science (CHECK plz)**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
*May 26, 2014*

**science (check!)**

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
*May 26, 2014*

**algebra**

Multiply out. 2x +20
*May 26, 2014*

**sci207**

Since this is not my area of expertise, I searched Google under the key words "water temperature affecting weather" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=water+temperature+effecting+weather&ie=UTF-8&oe=UTF-8 In the future...
*May 26, 2014*

**math**

1. 2(2/5) + 1/2 = 4/5 + 1/2 = .8 + .5 = 1.3 = 1 3/10 2. Using the information above, you should be able to do this one yourself.
*May 25, 2014*

**Psychology**

Possibly this article might help: http://drdavespsychologypage.homestead.com/Memory__What_Memory_.pdf
*May 25, 2014*

**statistics**

It would help if you proofread your questions before you posted them. You only have one value for the young. The independent variable is age, but it would be better if you more specifically defined the age ranges. I hope this helps.
*May 25, 2014*

**Technology**

Since this is not my area of expertise, I searched Google under the key words "sepia examples" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=sepia+examples&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire ...
*May 24, 2014*

**statistics**

You start with a null hypothesis and an alternative hypothesis. You decide what probability you will use to reject your null hypothesis, in other words what is statistically significant. That is also your type I error, the probability of rejecting your null hypothesis, when it...
*May 24, 2014*

**Simple Biology**

I am worried whether the majority is only 51% as vs. something like 95%. Besides, how could you test it?
*May 24, 2014*

**Technology**

See your later post.
*May 24, 2014*

**please help bio**

Since he only has one X chromosome, the allele must be for normal color vision.
*May 24, 2014*

**Statistics**

Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n (n = 25) If only one SD is provided, you can use just that to determine SEdiff. Find table in the back of your statistics text labeled something like &...
*May 24, 2014*

**science**

motor or efferent
*May 23, 2014*

**science**

Since this is not my area of expertise, I searched Google under the key words "nerve nets" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nerve+nets&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more ...
*May 23, 2014*

**arithmetic**

We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.
*May 23, 2014*

**math (?)**

Insufficient data. How large is the paper and/or the strips?
*May 23, 2014*

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