Thursday

April 24, 2014

April 24, 2014

Total # Posts: 17,530

**science**

If the atmosphere gets thinner, what do you think happens to the air pressure outside the airplane?

**Science (?)**

What is a "shake up toy"?

**Algebra (?)**

What inequalities? You cannot copy and paste here.

**stats**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.05)(1-.05) = ?

**Math**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 4/8 is 4 times greater than 1/8 and they add to 5/8.

**math**

36/1.5 = ?

**math**

hi

**math**

-2x+6y=-26 8x+6y=-16 Multiply first equation by 4, then add the two equations. -8x + 24y = -104 30y = -120 You should be able to work it from here.

**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 into equation above and solve for score.

**Statistics (?)**

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 95% = mean ± ...

**stats**

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 (.15) and its Z score. Insert all values in above equation to calculate the score.

**math**

If -2y = 1, then y = -1/2 Thus 3x + (-1/2) = 1, then: 3x = 3/2 x = 1/2

**Math**

2 cups = 16 fluid ounces 1 gallon = 128 fluid ounces 1 pint = 16 fluid ounces x/16 = 16/128 Solve for x.

**Math**

a = 90 - b 2b + a = 96 2b + (90-b) = 96 b = 6

**math word problems**

It lost the 2' plus another 4' (1 yd 1 ft). 2' + 4' =?

**statistics**

You do not mention what is being measured. Do the numbers represent SAT Scores or the number of people who took the test (participation rates)? Points on a scatter diagram are each represented by two numbers, one on the ordinate (Y axis) and the other on the abscissa (X axis)....

**algebra (?)**

No wall shown. you cannot copy and paste here.

**Probability (?)**

We do not have access to Table III.

**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

**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)/stan...

**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

**math (?)**

What design? Cannot copy and paste here.

**algebra**

Ratio is 1:3 with total of 4. 1/4

**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

**math**

6 * .25 = ?

**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)

**Chemistry needs help**

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

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

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

**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.

**English??**

"How to subtract from ADD"?

**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 y...

**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.

**psychology**

mental processes

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

Looks fine to me.

**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....

**Statistics**

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

**science question**

indicator? Independent variable? determiner?

**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.

**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

**Algebra**

3.4 * 10^-7

**Science**

As long as you are saying "any," I would choose 1.

**Statistic**

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

**Math 3**

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

**math**

Well, what do you notice? Is it closer to the original number?

**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:/...

**math (?)**

?

**Stats**

80% = mean ± 1.28 SD

**statistic help please**

See Post under name of Helen.

**statistic help please**

32/259 = ? I have already answered this second question in a previous post.

**statistic**

I'm not sure about D.

**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 ...

**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/.

**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...

**Science**

Different from what? Each different substance has distinct chemical and physical properties.

**science (?)**

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

**Science**

Agree with Jay.

**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.

**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 ...

**statistics**

95% = mean ± 1.96 SEm SEm = SD/√n

**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.

**math**

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

**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 t...

**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=U...

**human bio please help**

A fibers B Calcium?

**science (?)**

What phenotypes?

**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/.

**math**

Looks good!

**math**

Right!

**Weather needs help**

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

**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

**Biology**

Right

**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

**Algebra**

(x+y)^2 = x^2 + 2xy + y^2

**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

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

Since when do social groups provide instincts?

**SCIENCE HELP ASAP PLZ!**

If you have no territory, you have no resources.

**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 informa...

**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?

**Chem needs help**

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

**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 informati...

**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.

**Liberal Arts Math II**

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

**biology PLEASE HELP**

Cell membrane

**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.

**Physics needs help**

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

**Math**

I would use a bar graph for both.

**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.

**Math - please help**

L = 3s k = s -20 s + 3s + s-20 = 170 Solve for s, then k and L.

**Algebra**

Right!

**Algebra**

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

**math**

.06% = .0006

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

1. alleles? 2. mitosis, meiosis 3. incomplete dominance? 4. chromosomes 5. reproduce?

**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).

**exam # 013050 (?)**

No data given.

**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?

**Math (?)**

What is your question?

**math(QUESTION)**

Agree

**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, ex...

**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...

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