Saturday
May 23, 2015

Posts by PsyDAG


Total # Posts: 19,872

math
2c + 2p + pot = 10.20 p = c/2 pot = c + 3 Substitute c terms for p and pot to solve for c. Then use third equation to solve for pot.
February 25, 2015

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.
February 25, 2015

Math
3J = G (J +15) + (G + 15) = 110 Substitute 3J for G in the second equation and solve for J. Insert that value into the first equation to solve for G. Add 15 to each.
February 25, 2015

intermediatealgera
Multiply all terms by x. 2x - 2x - 4 - 2x Combine like terms.
February 25, 2015

intermediatealgera
Use process indicated in your following post.
February 25, 2015

Arithmetic
One must be negative. Try factoring -70.
February 24, 2015

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. I'll let you do the calculations.
February 24, 2015

algebra1
Use process suggested in previous post.
February 24, 2015

Algebra 1
Subtract first equation from the second.
February 24, 2015

Statistics
Mode http://drdavespsychologypage.homestead.com/Two___Two_____four.pdf
February 24, 2015

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. If replacement, then: 3/12 * 5/12 = ?
February 24, 2015

statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability to the left of Z. Since Z is negative, it is in the smaller portion.
February 24, 2015

statistics
Use Z table.
February 24, 2015

maths-probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 2/n * 1/(n-1) = 1/28 If they haven't been replaced, the probability of picking a red = 0.
February 24, 2015

Biology - Genetics
An autosome is a chromosome that is not an allosome (i.e., not a sex chromosome). Autosomes appear in pairs whose members have the same form but differ from other pairs in a diploid cell, whereas members of an allosome pair (XX, XY) may differ from one another and thereby ...
February 23, 2015

Math
3/2 * 18 = ?
February 23, 2015

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 between the two Z scores. Multiply by 100.
February 23, 2015

Psych 42 (Stats)
Same process as following post from Alecia.
February 23, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "fluorine element" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=fluorine+element&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
February 23, 2015

child psychology in general
I definitely agree with B. Assuming that the experiments were not faulty, the theory needs to be rejected or at least modified.
February 23, 2015

Maths
272 + 325 = ?
February 22, 2015

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 ± 1.96 SEm SEm = SD/√n
February 22, 2015

math
(x-1)(x+2)-(x-3)^2 = (x^2+x-2) - (x^2-6x+9) = x^2+x-2-x^2+6x-9 = ? Combine like terms.
February 22, 2015

statistics
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 it for you. A. 400 + 1 = 401
February 22, 2015

statistics
16/40 Reduce.
February 22, 2015

statistics
You cannot copy and paste here.
February 21, 2015

Statistics
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 begin. A. Does cell phone radiation increase the probability of tumors?
February 21, 2015

math
P = 2L + 2W = 36 + 12 = 48 cm Since you are rounding the error for each L and W < .5 cm. With 4 sides, the should be < 2 cm. Now, you find the percentage.
February 21, 2015

math
agree.
February 21, 2015

statistics
Z = (score-mean)/SD ±3 = (score-158)/8 Solve for both the negative and positive values.
February 21, 2015

Math
C = πd = 3.14 * 2.5 = ? Area of towel = ? * 10 * 15 Of course, this will be a little off, since the circumference will increase as the layers accumulate.
February 20, 2015

Last help Thanks
The ratio is 4:7, but the odds are 4/11, # Ss vs the total possible choices.
February 20, 2015

Satistics Help
Typos? Odds of winning = a/(a+b) = # winning games over total.
February 20, 2015

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 I'll let you do the ...
February 20, 2015

Psyc
What is your question? You cannot copy and paste here.
February 20, 2015

life orientation
I assume you are talking about approach-avoidance conflicts, which will lead to vacillation (alternating approach and avoidance without ever accomplishing the goal). Types of Internal Conflicts I. Approach-approach involves two or more positive goals. It is easily resolved (...
February 20, 2015

Math
72º/3 = 24º per slice 360º/24º = ?
February 19, 2015

Biology
Zunie forgot that the male is XY, and the Y chromosome does not contain a color vision gene. Use a Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
February 19, 2015

Math
We do not have data for the number of chores, but we do have data for the number of hours worked. Again, hours of chores/summer month = 5 * 4 * 1.5 = 30 hours per 20 weeks If you do not have a typo, hours of chores/winter month = 6 hours per 28 weeks Mean = ∑x/n = (30+6...
February 19, 2015

Math
d = rt = 5 * 8/60 = ? ?/(10/60) = r = miles/hour
February 19, 2015

business math
It would help to know the specific problem.
February 19, 2015

math please help
First triangle has a perimeter of 18 = 3 + 7 + 8. 54/18 = 3 So if they are "similar," each side must be three times larger.
February 19, 2015

Anthropology
Formal sanctions typically involve fines, incarceration and/or execution. Informal sanctions typically involve scorn, rejection and/or exclusion.
February 19, 2015

math
Best estimate = 2/8 * 120 = ?
February 19, 2015

math
Best estimate = 6/300 = ? ? * 1800 = ??
February 19, 2015

math
The answer is either 12/35 or 35/12, depending on which version of the problem is correct. Neither one reduces to 5/6.
February 19, 2015

math
Is it (3/7)d or 3 divided by 7d? If the latter, multiply both sides by d 3/7 = (5/4)d Multiply both sides by 4/5. d = 3/7 * 4/5 = 12/35 If the former, Multiply both sides by 7/3 d = 7/3 * 5/4 = ?
February 19, 2015

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.
February 19, 2015

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.
February 19, 2015

Math
Summer = 5 * 4 * 1.5 = hours/week It would help if you proofread your questions before you posted them. He only did 6 hours of shoveling for the 7 cold months? Mighty sparse snowfall.
February 18, 2015

science
Since this is not my area of expertise, I searched Google under the key words "transporters of protein in plants" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=transporters+of+protein+in+plants&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the...
February 18, 2015

math
Is this what you mean? d^2+1/d+(7*5d/d)-1d d/d = 1 Multiply by d. d^3 + 1 + 35d - d = ?
February 18, 2015

math
C = $49 + $20m
February 18, 2015

algebra
What formula? What is your question? You cannot copy and paste here.
February 18, 2015

Statistics
Do you know the 68-95-99.7 rule? Approximately 68% of scores in normal distribution are within one standard deviation (34% on each side of the mean), 95% within 2 SD, and 99.7% within 3 SD.
February 17, 2015

Science
1. Shape determines which other nerves they stimulate. 2. An organ consists of many different kinds of tissues.
February 17, 2015

Biology
What mutation?
February 17, 2015

statistics
Z = (score-mean)/SE 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. How does P = .05 compare?
February 17, 2015

science
Can't tell unless we get speed for last third.
February 17, 2015

Math
Assuming same number of stairs between each floor: 3rd floor --> up two floors 6th floor --> up six floors Got it?
February 16, 2015

math
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 I'll let you do the ...
February 16, 2015

Math
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 I'll let you do the calculations.
February 16, 2015

Algebra
What is your question?
February 16, 2015

Interpersonal communication
Definitely true. We each have a code book (language, etc.) that we use. We need to use that to communicate, hoping that the receiver has a code book that can decode your message. Check out this article: http://drdavespsychologypage.homestead.com/Communication_Confusion.pdf
February 16, 2015

math
laps < 10
February 16, 2015

science
Assuming that the jar is air tight, the flame will go out once the oxygen in the jar is used up.
February 16, 2015

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 16, 2015

costs
25/4 = x/.59 Solve for x.
February 16, 2015

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 16, 2015

anthropology
Good as far as you went, but you didn't discuss if "we should impose our values on those cultures." What are your thoughts about that?
February 16, 2015

Probability
Network not shown. You cannot copy and paste here.
February 16, 2015

statistics
Z = (score-mean)/SD = (17-mean)/SD Which has the highest Z score?
February 15, 2015

stats
95% = mean ± 1.96 SEm SEm = SD/√n
February 15, 2015

math
4 - .4 = ?
February 15, 2015

math
In what time zone? 7:15 + 5 hours - 5 minutes = ?
February 15, 2015

algebra
35/45 = ? gallons
February 15, 2015

MATH
Please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you. What question?
February 15, 2015

science
Since this is not my area of expertise, I searched Google under the key words "electrostatic precipitator" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=electrostatic+precipitator&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...
February 13, 2015

Math
248/100 = 124/50 = 62/25
February 13, 2015

statistics
Didn't I answer this previously? 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. Range = highest score minus lowest Find ...
February 13, 2015

math
2 1/5 = 11/5
February 12, 2015

Math
Insufficient data.
February 12, 2015

science 1 question
I would say B.
February 12, 2015

Math
Let x = longest side of the triangle x + x/2 + (x-7) = 53 Solve for x, then x/2 and x-7.
February 12, 2015

Math: Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Assuming there is no replacement: P(red,red) = 3/10 * 2/9 = ? P(red,blue) = 3/10 * 4/9 = ?
February 12, 2015

Statistics
Discrete only can be whole numbers, no partial.
February 12, 2015

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 22/100 * 21/99 * 20/98 = ?
February 12, 2015

Introductory Algebra
No blueprint available. L = 2W + 7 2W + 2L = 68 Substitute 2W+7 for L in the second equation and solve for W. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
February 11, 2015

math
8.2m/5m = x miles/15 miles Solve for x.
February 11, 2015

pre-algebra
7 cm/40.4 cm = x m/80.6 m Solve for x.
February 11, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "describe the flow of blood in the human body" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=describe+the+flow+of+blood+in+the+human+body&ie=UTF-8&oe=...
February 11, 2015

science
Since this is not my area of expertise, I searched Google under the key words "life cycle of the animalia kingdom" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=life+cycle+of+the+animalia+kingdom&ie=UTF-8&oe=UTF-8&gws_rd=ssl In ...
February 11, 2015

math
P(treat) = 20/36 = ? P(not) = (36-20)/36 = ?
February 11, 2015

Law?
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 11, 2015

math
You cannot copy and paste here.
February 11, 2015

6th grade math
For the same reason that you do it in an equation, to keep it balanced.
February 11, 2015

statistics
Z = (score-mean)/SD Which one has the largest positive Z score?
February 11, 2015

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 Z = (score-mean)/SD Find ...
February 11, 2015

biology
Mendel says 4.
February 11, 2015

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.
February 11, 2015

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