Thursday

November 27, 2014

November 27, 2014

Total # Posts: 18,731

**Algebra 1**

From your data: 1/2 + 1/4 = 3/4 3/4x = 16 Multiply both sides by 4/3.
*September 29, 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 (.07) and its Z score. Insert Z score in equation above to find raw score.
*September 29, 2014*

**discrete distribution**

No data given. 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 variance. Standard deviation = square root of variance
*September 28, 2014*

**algebra**

Insufficient data.
*September 28, 2014*

**public speaking**

No choices listed.
*September 28, 2014*

**statistics (Bill)**

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. I would want the one with the lowest variability. SD is a measure of ...
*September 28, 2014*

**statistics (Tom)**

What is your question?
*September 28, 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 (.10) and its Z score. Insert Z score and other relevant data in equation above to find the raw score.
*September 28, 2014*

**stats**

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. However, I will start for you. a) 15/total cubes = ? b) (total cubes-15)/total cubes = ? ...
*September 28, 2014*

**stat**

No, it changes the odds of picking a spade. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 13/52 * (13-1)/(52-1) = ?
*September 28, 2014*

**Physics needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*September 28, 2014*

**Math (money)**

(1 - 1/6)x - 9 = 16 Solve for x.
*September 28, 2014*

**science 2 quick questions**

You need to search through the sources. 1. Here one of the sites you said didn't help. Look through it carefully. http://www.merckmanuals.com/home/infections/viral_infections/overview_of_viral_infections.html 2. Look through these sources closely. https://www.google.com/...
*September 28, 2014*

**stat**

Z = (score-mean)/SD Need mean and standard deviation for ALL CITIES to find Z scores.
*September 28, 2014*

**statistics**

Even or Even = 3/6 Either-or probabilities are found by adding the individual probabilities. <5 = P(1, 2, 3, or 4) Die only has values 1-6.
*September 28, 2014*

**To ANY SCIENCE HELPER**

https://www.google.com/search?client=safari&rls=en&q=methods+of+viral+infection&ie=UTF-8&oe=UTF-8&gws_rd=ssl https://www.google.com/search?client=safari&rls=en&q=virus+helpful+to+host&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more ...
*September 28, 2014*

**Biology**

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 later post.
*September 27, 2014*

**social statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.025) and its Z score. 95% = mean ± Z SEm SEm = SD/√n
*September 27, 2014*

**Psychology**

I will give some problems I think may be happening and let you relate them to critical thinking. How were the 100 students selected? Would the method of selection allow you to generalize to students as a whole? What level of significance was used? .01? .05? .10? Was Penny'...
*September 27, 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 (±.40) and the corresponding Z scores. Insert in above equation to get the raw scores.
*September 27, 2014*

**statistics**

Z = (score-mean)/SD Which one has the highest Z score?
*September 27, 2014*

**Science**

Since it is called "carbon dating," you can automatically eliminate A and B. Whenever you don't know the right answer in multiple choice, you can get closer to the right answer by eliminating those that you know are wrong. The first C, carbon 14.
*September 26, 2014*

**Stats**

No, it would be mean ± 2SD.
*September 26, 2014*

**Algebra 2**

Online "^" is used to indicate and exponent, e.g., x^2 = x squared. Our steps in what? What is your question? Repeat with correct symbols.
*September 26, 2014*

**Biology question plz**

There is no D given.
*September 26, 2014*

**math**

Without the goats, total = 38. H = G + D D = G + 5 Substitute G+5 for D H = G + G + 5 = 2G + 5 H + G + D = 38 Substitute G+5 for D and 2G+5 for H. 2G+5 + G + G+5 = 38 Combine terms to solve for G, then D.
*September 25, 2014*

**statistics**

http://drdavespsychologypage.homestead.com/Two___Two_____four.pdf
*September 25, 2014*

**Algebra 2**

Right
*September 25, 2014*

**Math**

S^2 = 27 Solve for S.
*September 25, 2014*

**In English?**

Please translate.
*September 25, 2014*

**maths**

100(1 - .40) = ?
*September 24, 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. See previous post.
*September 24, 2014*

**career math**

I assume you are talking about the bottom of each roll. Area = π * r^2 area = 3.14 * 121 = ?
*September 24, 2014*

**algebra. help!**

True 16 = 4x - 4 No, add 4 to both sides, then divide by 4.
*September 24, 2014*

**Science**

Right, A, B and C are all parts of atoms.
*September 24, 2014*

**math**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 787,878 878,787
*September 24, 2014*

**algebra**

.50 + .10t = 2.00 Solve for t.
*September 24, 2014*

**Statistics 7**

We do not have access to web file.
*September 24, 2014*

**Statistics 2**

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 of the Z score.
*September 24, 2014*

**science**

Since this is not my area of expertise, I searched Google under the key words "nucleon structure functions" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=nucleon+structure+functions&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
*September 24, 2014*

**Math**

V= π * r^2 * h 339.3 = 3.14 * r^2 * 3 3.14 * 3 = 9.42 Divide both sides by 9.42, then find square root.
*September 24, 2014*

**math**

See previous post.
*September 24, 2014*

**math**

x/1.5 = 75/50 Solve for x.
*September 24, 2014*

**algebra**

mean = ∑x/n 90 = (92 + 92 + 83 + x)/4 Solve for x.
*September 23, 2014*

**algebra**

Parentheses would clarify the problem.
*September 23, 2014*

**Algebra**

D = Q + 20 .10D + .25Q = 5.50 Substitute Q+20 for D and solve for Q. Insert Q value in first equation to find D. Put both values into the second equation to check.
*September 23, 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. See later post.
*September 23, 2014*

**Algebra 1**

1) See later post. 2) An inequality is treated just like an equation, except that multiplying/dividing by a negative value reverses the carat (< to >). Multiply both sides by 5. 30 + a < 25 Subtract 30 from both sides.
*September 23, 2014*

**Science**

Less expensive to indicate possible problems.
*September 23, 2014*

**Science! Help**

No, if both parents homozygous recessive, all offspring will be recessive. Use Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square+worksheet&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*September 23, 2014*

**science Help**

No. Long-haired = ss Short-haired = Ss Use Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square+worksheet&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*September 23, 2014*

**Math**

Right.
*September 23, 2014*

**algebra 2**

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.
*September 23, 2014*

**Science Help**

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 later post.
*September 23, 2014*

**Science Help**

Definitely. https://www.google.com/search?client=safari&rls=en&q=punnett+square+worksheet&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*September 23, 2014*

**Statistics**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 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 ...
*September 23, 2014*

**math**

5 1/3 = 5.333333333…. How many decimal places do you want?
*September 23, 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 scores. Multiply by 100 for percentage.
*September 23, 2014*

**math**

-2x+14
*September 23, 2014*

**Math Algebra**

150 + 2(pairs) = ?
*September 23, 2014*

**Math**

(1 - 1/5)x = 240 Solve for x.
*September 23, 2014*

**English?**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Do you have alternatives given? see? tell? perceive? distinguish? make out?
*September 23, 2014*

**Math**

51/80 * 100 = ?
*September 23, 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. See later post.
*September 23, 2014*

**Math**

1 Kg = .00098420653 (UK long tons = tonnes?)
*September 23, 2014*

**math**

-67/12 divided by 12 = -67/144 = ?
*September 23, 2014*

**math**

L/3 = R 15L = H L + R + H = L + L/3 + 15L = 1.1 Solve for L, then R.
*September 23, 2014*

**sociology**

What does your text say?
*September 23, 2014*

**Statistics?**

What is you question?
*September 23, 2014*

**statistics**

"Unimodal and symmetrical" = normal Z = (score-mean)/SD variance = SD^2 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. Multiply by 60.
*September 23, 2014*

**dana**

What are your choices?
*September 23, 2014*

**algebra**

Need to repeat original question, otherwise we don't have any idea about what you are asking.
*September 23, 2014*

**math**

Without any further data, I would assume a minimum of 4.
*September 23, 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 proportions/probabilities related to the Z scores. For percentage, multiply by 100. For n, multiply by 50.
*September 23, 2014*

**introduction to psychology ll**

What are your choices? speak? walk? over 65?
*September 23, 2014*

**introduction to psychology ll**

What are you choices?
*September 23, 2014*

**Statistics**

Cannot draw on these posts. Z = (score-mean)/SD a-c. 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. Multiply by 100. d-e. Use same table for .20 ...
*September 22, 2014*

**Science**

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.
*September 22, 2014*

**math**

Since 4^2 = 16, the answer must be slightly less that 4, 3.9?
*September 22, 2014*

**math**

x/2 + 3 = 17 Solve for x.
*September 22, 2014*

**Biology**

Without photosynthesis, most plants would not exist. Since we eat plants and other eaters of plants, we would not have a food source. No food --> no energy.
*September 22, 2014*

**algebra**

D, If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
*September 22, 2014*

**Physics needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*September 22, 2014*

**math**

It would help if you proofread your questions before you posted them. If each ate 1/3 (1/3+1/3+1/3=1), there would be no 1/4 for Don.
*September 22, 2014*

**make up**

.10x = $55 x = 55/.1 = 550
*September 22, 2014*

**Algebra**

agree
*September 22, 2014*

**psych 42**

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. Multiply by 100.
*September 21, 2014*

**statistics**

Z = (score-mean)/SD T = 50 + 10Z 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. Multiply by 100 to get percentage.
*September 21, 2014*

**Biology**

If not matched, the donation will most likely kill the recipient.
*September 21, 2014*

**science**

k = 1000, m = 1/1000 Never heard of h.
*September 21, 2014*

**Math Help!!**

9.95 + .10m = 12.95 + .08m Solve for m.
*September 21, 2014*

**Stats**

Didn't you ask this question before? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .60 * .44 = ?
*September 21, 2014*

**statistics**

It would help if you proofread your questions before you posted them. What is your question? Just guessing… 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...
*September 20, 2014*

**statistics**

If the study is of all members of the group for which conclusions will be made, it is a parameter. If of only a portion, it is a statistic.
*September 20, 2014*

**science**

Right.
*September 19, 2014*

**Science**

Agree for all.
*September 19, 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. See later post.
*September 19, 2014*

**Physics needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*September 19, 2014*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "role of Helicase in transcription" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=role+of+Helicase+in+transcription&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the...
*September 19, 2014*

**Math**

first one correct. Multiply both sides by 3. 6n - 7 = 45 Add 7 to both sides. 6n = 52 Divide by 6.
*September 19, 2014*

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