Thursday
September 3, 2015

Posts by PsyDAG


Total # Posts: 20,170

math
I assume you are saying the area of the square box = 486. L^2 = 486 L = √486
February 9, 2015

Math Probability Outcome
It would help if you proofread your questions before you posted them. If you choose two socks, how do you get "2 pair of white socks? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the ...
February 9, 2015

statistics
mean, a particular measure of central tendency.
February 8, 2015

stats
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 like "...
February 8, 2015

STATS
Z = (score-mean)/SD = (190-180)/17 = ?
February 8, 2015

Math
A) # $20 notes/total notes = ? B) Either-or probabilities are found by adding the individual probabilities. C) # $50 notes/total = ? D) 9/18 = ?
February 8, 2015

English
In today's society, many middle class people argue that they cannot build wealth because of wrong choices. This is a better statement of the thesis, but I don't know how you will be able to support it.
February 7, 2015

math
one ounce = 6 teaspoons 6/24 = x/6 Solve for x.
February 7, 2015

stats
P(2 blue balls) = 20/30 * 19/29 P(red ball third) = 10/28
February 7, 2015

statistics
Definitely right.
February 6, 2015

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A. .8 * .7 = ? B. .2 * ? = .18
February 6, 2015

Probability
http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf
February 6, 2015

Statistics HELP
P(red in A) = 1/5 P(red in B) = 3/16 To compare, change to decimals.
February 6, 2015

Statistics
HH TT TH HT Four possibilities.
February 6, 2015

Crime and Society
What rates?
February 6, 2015

Algebra
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Please put equation all on one line. 9x - y = 11 x + 3y = 23 Multiply first equation by 3. 27x - 3y = 33 Add second and third equation to ...
February 5, 2015

college algebra
Let x = miles. $20 +$.50x = $1.50x Solve for x, then substitute 30 for x.
February 5, 2015

math
5/30 = 1/6 Since 1/6 < 1/5, estimate slightly < 20%
February 5, 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 5, 2015

Math
290? 280? etc.
February 5, 2015

statistic
Have no idea of contents of Table 1. 1. No 2a. SEm = SD/√n = (√variance)/n 2b. Z = (score-mean)/SEm 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...
February 5, 2015

math
Let m = Mrs. Lee's age, then s = m - 26 m = 3(m-26) Solve for m.
February 5, 2015

algebra
x + y = 40 x - y = 6 Add the two equations and solve for x. Insert that value into one of the equations to find y.
February 5, 2015

ENGLISH
What is you question? The sentence is grammatically correct, but I can still talk with my mouth full.
February 5, 2015

ENGLISH
What is your question? Grammatically correct, but logically wrong.
February 5, 2015

algebra
What following? You cannot copy and paste here.
February 5, 2015

Thank You everybody who helps us
You are welcome.
February 4, 2015

Human service
If feedback is positive, keep doing what your are doing. If feedback is consistently negative, institute changes. If feedback is consistently positive, except for one or two individuals, try to determine if the negative feedback is due to idiosyncratic aspects of the ...
February 4, 2015

statistics
Lacking data. Z = (score-mean)/SD 2.84 = (score- 8.9)/SD What is the SD (standard deviation)?
February 4, 2015

Science
Agree.
February 4, 2015

Anthropology
Since this is not my area of expertise, I searched Google under the key words "Hopi funeral practices" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Hopi+funeral+practices&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
February 4, 2015

math
What are your choices? dependent variable?
February 4, 2015

English Check please
Agree
February 4, 2015

English check
There is no mention of the Cyclops.
February 4, 2015

English
How can we help you?
February 3, 2015

science
Dendrites and cell body receive impulses from axons over the small gap, the synapse.
February 2, 2015

health
Disagree. What is being sent? In other words, what is moving?
February 2, 2015

math
I don't know which test you are using. Try this one. 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 ...
February 2, 2015

Substitution
A = 155 - S $2.50S + $4.00A = $492.50 Substitute 115-S for A in the second equation and solve for S. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
February 1, 2015

statistics
Cannot be answered unless the type of distribution is known — normal, positively skewed, negatively skewed.
February 1, 2015

concept development
Agree.
February 1, 2015

Help with Psychology
Disagree. What is the maximum value you can have for a correlation coefficient?
February 1, 2015

math
Since this is not my area of expertise, I searched Google under the key words "auto braking distance" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=auto+braking+distance&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
January 31, 2015

psychology
I feel overloaded with this many items. I agree with 1, 2, 4, and 5 but not 3.
January 30, 2015

math
Since I don't know what "IQR" indicates, I would go with the last choice.
January 30, 2015

Language Arts
Disagree. The image is growing smaller, but not the actual object itself.
January 30, 2015

7th grade math
I searched Google under the key words "venn diagram" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=venn+diagram&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if you use ...
January 30, 2015

math
Cannot draw picture on these posts. 2 2/3 = 8/3 Divide by 4.
January 29, 2015

Math
the number of solutions?
January 29, 2015

Math
5W = L LW = 125 5W^2 = 125 Substitute 5W 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.
January 29, 2015

Science
Agree
January 29, 2015

Algebra
2(m/-3)-11=m/4 Solve for m, then n.
January 29, 2015

Science
Disagree with both.
January 29, 2015

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Why should Homeroom 102 take more than their half? However, if they do: 1/2 + (2/5 * 1/2) = ? .5 + (.4 * .5) = ?
January 29, 2015

math
(500 * 200)/(100*8) = ?
January 28, 2015

math
(70 - 25) = 3/5x Solve for x.
January 28, 2015

math
(3/4)x = 3 To solve for x, multiply both sides by 4/3.
January 28, 2015

algebra
Lacking diagram information.
January 28, 2015

Algebra 1
Isn't the 5 an exponent?
January 28, 2015

math
Use same process as in previous post. For your safety, I suggest that you do not use your full name in future. Irene is enough.
January 28, 2015

math
let x = # at $23, and y = # at $45. y = 210 - x 23x + 45y = 6150 Substitute 210-x for y in the second equation and solve for x. Insert that value into the first equation to solve for y. Check by putting both values into the second equation.
January 28, 2015

math
Use same process as indicated in your later post.
January 28, 2015

Math
A = B + 20 90 + A + B = 180 Substitute B+20 for A in the second equation and solve for B. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
January 28, 2015

algebra
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.
January 28, 2015

Algebra I
The values are correct, but what happened to the negative sign?
January 28, 2015

Math
x(x+9) = 360 x^2 + 9x - 360 = 0 360 = 5 * 2 * 3 * 3 * 2 * 2 Find combination of factors that will give you 9.
January 28, 2015

math
1, 2. Agree. 3. 118 ml 4. agree 5. 4.9 ml 6. 1 ml 7. .924 gr 8. 237 ml Make sure you are using the correct units.
January 28, 2015

personal finance
Sales tax?
January 28, 2015

math-algebra
m^6n
January 28, 2015

Math needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
January 28, 2015

English
…therefore they're going…. It looks like you already have this "put together." Are you concerned specifically with Ashley's, or are you just using Ashley's as a specific example of an agreement? I don't think the furniture has to be paid by ...
January 28, 2015

Math
If % < 100%, it is less than number. If % > 100%, it is more than number. If % = 100%, then =.
January 27, 2015

algebra 2
It would help if you proofread your questions before you posted them. How high is the diving board?
January 27, 2015

Math - Problem solving
agree
January 27, 2015

photography needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
January 27, 2015

mathematics literacy
It would help if you proofread your questions before you posted them. If Ed has 8/3, there is no pie left, and he ate two other pies. I assume you mean 3/8. 1 - 3/8 - 1/5 - 1/4 = x Convert to decimals and calculate. 1 - .375 - .2 - .25 = x
January 27, 2015

i need help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts ...
January 27, 2015

Math
1. 1,500,000,000/2,000,000 = 1,500/2 = ? 2. What is the size of a dollar bill? 3. 6,700,000,000 feet There are 5280 feet in a mile.
January 27, 2015

ALGEBRA
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.
January 27, 2015

psychology
Perhaps this will make things even clearer. http://drdavespsychologypage.homestead.com/Astrology_Fiction.pdf
January 26, 2015

geometric
L + 1 = W 2L + 2W = 106 (perimeter) Substitute L+1 for W in the second equation and solve for L. Insert that value into the first equation to solve for W. Check by putting both values into the second equation.
January 26, 2015

Science
Insufficient data. What hypothesis are you testing?
January 26, 2015

math
L = W + 5 L * W ≥ 84 Substitute W+5 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.
January 26, 2015

algebra
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. [(1.9*106)/(2.62*105)]+7.96 = (201.4/275.1) + 7.96 = .732 + 7.96 = ?
January 26, 2015

Math
Assuming Don has no other expenses (which is unlikely in real life): $500 + $120 + $150 < salary
January 26, 2015

1 step and 2 step equations
First two are correct. -y/7 = 18 Multiply both sides by -7. 14z = 56 Divide both sides by 14.
January 26, 2015

math
What is your question?
January 26, 2015

algebra
red = .5x blue = .2x Yellow = .3x This is the best I can do with your data.
January 25, 2015

Math
2/3(840) = train ticket 1/2(840 - train ticket) = food Add the two answers.
January 25, 2015

algebra
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Do you mean this? (5x^2 - 3^2)/(3^2-2^2) Or this? (5 * 2 - 3^2)/(3^2-2^2) Or something else?
January 25, 2015

stats
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Assuming that the person does not have more than 3 horses in the race: 1/13 * 1/12 * 1/11 = ?
January 25, 2015

History
History is an interpretation of evidence. It provides a meaning and EXPLANATION why history has caused a big impact on our life today. At one time, every EVERY? nation tried to vanquish one another that generated the two world wars. Likewise, status, race, gender, love, labor ...
January 25, 2015

math
8 * 7 = 56 7 * 6 = 42 6 * 5 = 30 5 * 4 = 20 4 * 3 = 12 (This one was missing.) 3 * 2 = 6
January 25, 2015

statistics
(300-40)/300 = ?
January 24, 2015

statistics
I almost didn't answer your post, because "statics" relates to physics. If you want to shorten statistics, stats would be better.
January 24, 2015

statics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.0125) and its Z score. Z = ±2.24 Mean = (48-42)/2 = ? Z = (score-mean)/SD Insert values for Z, score and mean to solve ...
January 24, 2015

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1/161*10/100*20/100 = 1/161 * .1 * .2 = .00012 = .012% ≠ 1.2%
January 24, 2015

statistics
4,1 1,4 2,3 3,2 4/36
January 24, 2015

statistics ?
80% + 40% = 120% How can you get more than 100%?
January 23, 2015

Math Help
1/2 hour = 30 minutes 19/30
January 23, 2015

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