Friday

January 30, 2015

January 30, 2015

Total # Posts: 19,116

**Algebra**

Multiply both sides by z. 6 - 3z = 8/5z Add 3z to both sides. 6 = 3z + 8/5z = 23/5z Multiply both sides by 5/23. 6 (5/23) = z 30/23 = z
*March 21, 2014*

**Statistics**

Find the means 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 Z = (mean1 - mean2)/...
*March 21, 2014*

**math**

a. What are pairs of factors of 128? Start with 2, 64. b. Pick the two factors that would allow the needed space. c. L * W = Area W = Area/L
*March 20, 2014*

**math (?)**

What design? Cannot copy and paste here.
*March 20, 2014*

**algebra**

Ratio is 1:3 with total of 4. 1/4
*March 20, 2014*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.071) and its Z score. OR… http://davidmlane.com/hyperstat/z_table.html
*March 19, 2014*

**math**

6 * .25 = ?
*March 19, 2014*

**math**

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 do one problem. 4. 10b + 25 = 5(2b + 5)
*March 19, 2014*

**Chemistry needs help**

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

**statistic****help*******

There are 2 possibilities with each coin. TTT HTT THT TTH HHT HTH THH HHH How many is that?
*March 19, 2014*

**math**

From your data, it makes more sense to subtract. Multiply second equation by 5 and subtract it from the first. 5x + 20y = 40 5x + 15y = 30 5y = 10 You should be able to proceed from here.
*March 19, 2014*

**English??**

"How to subtract from ADD"?
*March 19, 2014*

**Health**

Since this is not my area of expertise, I searched Google under the key words "mastication muscles" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=mastication+muscles&ie=UTF-8&oe=UTF-8 In the future, you can find the information ...
*March 19, 2014*

**psychology**

I can't make any sense out of it either. It would help if you proofread your questions before you posted them. You cannot copy and paste here.
*March 19, 2014*

**psychology**

mental processes
*March 19, 2014*

**statistic****help*******

Looks fine to me.
*March 19, 2014*

**statistic****help*******

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 you out. 10. Since you are dealing with percents, the grand total = 1....
*March 19, 2014*

**Statistics**

95% = mean ± 1.96 SEm SEm = SD/√n I'll let you do the calculations.
*March 19, 2014*

**science question**

indicator? Independent variable? determiner?
*March 18, 2014*

**STATISTIC***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 your later post.
*March 18, 2014*

**Alegbra**

If you move the decimal place to the left, the exponent is positive. If you move decimal place to the right, exponent is negative. 9.3 * 10^7
*March 18, 2014*

**Algebra**

3.4 * 10^-7
*March 18, 2014*

**Science**

As long as you are saying "any," I would choose 1.
*March 18, 2014*

**Statistic**

K = .40 * .40 = ? L = .30 *.60 = ? Either-or probabilities are found by adding the individual probabilities.
*March 18, 2014*

**Math 3**

130/8 = 16.25 If she wants to bag "all" the cookies, there will be only 2 in the 17th bag.
*March 18, 2014*

**math**

Well, what do you notice? Is it closer to the original number?
*March 17, 2014*

**Astronomy **

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Since this is not my area of expertise, I searched Google under the key words "fastest moon" to get these possible sources: https...
*March 17, 2014*

**Stats**

80% = mean ± 1.28 SD
*March 16, 2014*

**statistic help please**

See Post under name of Helen.
*March 16, 2014*

**statistic help please**

32/259 = ? I have already answered this second question in a previous post.
*March 16, 2014*

**statistic**

I'm not sure about D.
*March 16, 2014*

**statistic**

A. 26/52 = ? B. How many queens are there? Divide by 52. C. How many red queens are there? Divide by 52. D. If the face card was replaced, no different from B. If not replaced, and queen drawn, 3/51. Or if queen not drawn, 4/51. Either-or probabilities are found by adding the ...
*March 16, 2014*

**Biology**

B https://www.google.com/search?client=safari&rls=en&q=water+to+steam&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
*March 16, 2014*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "mutation DNA" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=mutation+DNA&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more...
*March 16, 2014*

**Science**

Different from what? Each different substance has distinct chemical and physical properties.
*March 16, 2014*

**science (?)**

Which wave? https://www.google.com/search?client=safari&rls=en&q=calculate+amplitude+of+a+wave&ie=UTF-8&oe=UTF-8
*March 16, 2014*

**Science**

Agree with Jay.
*March 16, 2014*

**Math (Partial)**

First two questions and last. Z = (score-mean)/SD SD^2 = variance 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.
*March 16, 2014*

**Statistics (?)**

No data given. Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = √(SEmean1^2 + SEmean2^2) SEm = SD/√n 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 ...
*March 16, 2014*

**statistics**

95% = mean ± 1.96 SEm SEm = SD/√n
*March 16, 2014*

**Science**

Rain forest is only one type of environment and trees are only one group of plants. Organisms either adapt to their environment or die.
*March 15, 2014*

**math**

Volume cone = 1/3π(r^2)h Surface area Square pyramid = 2bs+b^2 Volume Rectangular prism = L*b*m
*March 15, 2014*

**stat**

I don't know what your "rule of thumb" is, but: a. 95% = mean ± 1.96 SD b. 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 ...
*March 15, 2014*

**Phi**

Since this is not my area of expertise, I searched Google under the key words "social contract approach to political theory" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=social+contract+approach+to+political+theory&ie=UTF-8&oe=...
*March 14, 2014*

**human bio please help**

A fibers B Calcium?
*March 14, 2014*

**science (?)**

What phenotypes?
*March 14, 2014*

**science**

http://simple.wikipedia.org/wiki/Malleability In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
*March 13, 2014*

**math**

Looks good!
*March 13, 2014*

**math**

Right!
*March 13, 2014*

**Weather needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*March 13, 2014*

**Science**

These apply to any subject. http://drdavespsychologypage.homestead.com/Be_Here_Now_.pdf http://drdavespsychologypage.homestead.com/Learning_Requirements.pdf http://drdavespsychologypage.homestead.com/Learning_Hints.pdf
*March 13, 2014*

**Biology**

Right
*March 12, 2014*

**Science... plz help~!(?)**

https://www.google.com/search?client=safari&rls=en&q=popul+Vuh&ie=UTF-8&oe=UTF-8#q=popol+vuh+mayan&rls=en
*March 12, 2014*

**Algebra**

(x+y)^2 = x^2 + 2xy + y^2
*March 12, 2014*

**Alegbra**

Online "^" is used to indicate and exponent, e.g., x^2 = x squared. When multiplying terms, the exponents are added. (x^5)(x^7) = x^12
*March 12, 2014*

**SCIENCE HELP ASAP PLZ! ONLY ONE QUESTION!!!!!!!!**

Since when do social groups provide instincts?
*March 12, 2014*

**SCIENCE HELP ASAP PLZ!**

If you have no territory, you have no resources.
*March 12, 2014*

**Science**

Since this is not my area of expertise, I searched Google under the key words "respiration of animals" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=respiration+of+animals&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*March 11, 2014*

**math**

Find 2 factors in your end terms that will add to give the middle term. 18 = 9*2 = 6*3 This doesn't seem possible with your equation. Do you have a typo?
*March 11, 2014*

**Chem needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*March 11, 2014*

**human biology please help**

Since this is not my area of expertise, I searched Google under the key words "golgi bodies function" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=golgi+bodies+function&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
*March 11, 2014*

**algebra**

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. I'll let you do the calculations.
*March 11, 2014*

**Liberal Arts Math II**

https://www.google.com/search?client=safari&rls=en&q=snowflake+island+perimeter&ie=UTF-8&oe=UTF-8
*March 11, 2014*

**biology PLEASE HELP**

Cell membrane
*March 11, 2014*

**human biology need 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 your later post.
*March 11, 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.
*March 11, 2014*

**Math**

I would use a bar graph for both.
*March 11, 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 your later post.
*March 11, 2014*

**Math - please help**

L = 3s k = s -20 s + 3s + s-20 = 170 Solve for s, then k and L.
*March 11, 2014*

**Algebra**

Right!
*March 11, 2014*

**Algebra**

1, 2. Okay 3. √0 - 2 = -2… √9 - 2 = 3 - 2 = 1 I'll let you do the other two.
*March 11, 2014*

**math**

.06% = .0006
*March 11, 2014*

**Please Help Me :( Science: Biology, Genetics!**

1. alleles? 2. mitosis, meiosis 3. incomplete dominance? 4. chromosomes 5. reproduce?
*March 10, 2014*

**6th grade math - statistics**

The middle 50% would be from between 3 and 4 to between 8 and 10 (the middle 6 scores). Q1 defines the lowest 25% (0, 1, 3), while Q3 defines the highest 25% (10, 12, 12).
*March 10, 2014*

**exam # 013050 (?)**

No data given.
*March 10, 2014*

**Alegbra**

x = 5000-y .05x + .08y = 331 Substitute 5000-y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation. Where can I find those interest rates?
*March 10, 2014*

**Math (?)**

What is your question?
*March 10, 2014*

**math(QUESTION)**

Agree
*March 10, 2014*

**psychology**

Since there are so many variables in personal interaction, it might be best to use several recorded requests (same content) from both genders and have doctors respond to them. To make is double blind, a third party would be the only one who knows the gender of the speakers, ...
*March 10, 2014*

**operations and supply**

Since this is not my area of expertise, I searched Google under the key words "master production schedule" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=master+production+schedule&ie=UTF-8&oe=UTF-8 In the future, you can find the...
*March 10, 2014*

**statistics**

I'm not sure what you might be asking. 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.
*March 10, 2014*

**algebra**

Cannot copy and paste here.
*March 9, 2014*

**algebra (?)**

No drawing seen. Cannot copy and paste here.
*March 9, 2014*

**Statistics**

Is that value the Z score or the probability? Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.095) and its Z score.
*March 9, 2014*

**Child Care**

Here are some methods for learning this, but I agree the Pre-K is probably too young for them to absorb the lesson. http://drdavespsychologypage.homestead.com/Prejudice__Us_vs_Them.pdf http://drdavespsychologypage.homestead.com/Prejujdice__Causes_and_Solutions.pdf http://...
*March 9, 2014*

**Statistics**

The mean serves as a fulcrum or balance point for a distribution. Therefore the difference from 30 must be the same on both sides. A wide variation of values could fit both situations. However, in the second situation, all scores could be 30.
*March 9, 2014*

**math**

40 * $7.60 = ?
*March 8, 2014*

**Algebra 1**

Assuming that there is no door or the door is painted as part of the wall: Ceiling = 9 by 7 = ? Opposite walls = 2(8*7) + 2(8*9) = ? Combine all of above and divide by 275. Any fraction would be left over.
*March 8, 2014*

**Algebra 1**

There are 89 two-digit numbers (10-99). The tens digits are higher in 10, 20, 21, 30, 31, 32 etc. Count them up.
*March 8, 2014*

**Algebra 1**

Since only the middle group have iPhones, 12%.
*March 8, 2014*

**Math**

Online "^" is used to indicate and exponent, e.g., x^2 = x squared. f(x) = 2x^2 – 3 = 2*2*2 - 3 = ?
*March 8, 2014*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/8 * 3/8 = ? 3/8 * (3-1)/(8-1) = ?
*March 8, 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. OR… http://davidmlane.com/hyperstat/z_table.html
*March 8, 2014*

**Statistics**

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.
*March 8, 2014*

**math**

y = (9 * 11 * 11) + 9 = ?
*March 7, 2014*

**Science**

It's a start, but I will let you elaborate it.
*March 7, 2014*

**Science**

Travel at miles per hour, feet per second or meters per minute? If you have a value of ten for each, they would be distinctively different.
*March 7, 2014*

**Statistics**

If the experiment involves two independent variables, the possibility of an interaction between the variables can be measured.
*March 7, 2014*

**Algebra word problem**

(7*6) - 2^2π = ?
*March 7, 2014*

**Algebra**

420 + .07(420)x > 552 + .04(552)x Solve for x.
*March 7, 2014*

Pages: <<Prev | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | **20** | 21 | 22 | 23 | 24 | 25 | 26 | Next>>