Monday
July 25, 2016

Posts by PsyDAG

Total # Posts: 22,086

Statistics (?)
It would help if you proofread your questions before you posted them. What are a and b? You cannot copy and paste here. Might this help? Z = (score-mean)/SD
July 24, 2016

Maths-Numeracy (?)
How many pairs do you have to start?
July 24, 2016

Probability
"one or more" = 1, 2 or 3 P(1) = 4/60 P(2) = 4/60 * (4-1)/(60-1) P(3) = 4/60 * 3/59 * 2/58 Either-or probabilities are found by adding the individual probabilities.
July 23, 2016

math
√ = square root of... The variance is 4, but I don't know about the degrees of freedom.
July 23, 2016

math
SS/n = variance SD = √variance
July 23, 2016

probability
P(n) = 8 * 10^6 = ? P(even) = 4^7 = ?
July 22, 2016

math
Pythagorean theorem 40^2 + 50^2 = distance^2
July 22, 2016

maths
40%
July 19, 2016

maths
(x+5)/(x+3+5) = 4/5 Solve for x.
July 19, 2016

Math
First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. Mean = ∑x/n 6 = (5+7+4+x)/4 Solve for x.
July 19, 2016

statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a) .95^4 * .05^2 = ? B) "at least five" = 5 or 6 P(5) = .95^5 * .05 = ? P(6) = .95^6 Either-or probabilities are found...
July 18, 2016

MATH
For one question, P(A) = 1/4 Is A the correct answer for all the questions?
July 17, 2016

Math
agree
July 17, 2016

statistics (?)
Need to know how many seeds Sue is planting.
July 17, 2016

Maths (?)
It would help if you proofread your questions before you posted them. That what?
July 17, 2016

Math
With the limited data you give, 601, 602, 603...697, 698, 699.
July 17, 2016

MATHS
Covert everything to kg. 2.25 + .06n = 32.25 Solve for n.
July 17, 2016

statistics
Cannot draw tree diagram here. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. "at least" = one or both P(both) = .6 * .6 P(only second) = .4 * .3 P(only first) = .6...
July 16, 2016

English
disagree
July 16, 2016

Math
2 + 4 + 5 = 11
July 15, 2016

science
The equation or formula for velocity is similar to speed. To figure out velocity, you divide the distance by the time it takes to travel that same distance, then you add your direction to it.
July 15, 2016

science (?)
No graph, no choices. Cannot copy and paste here.
July 15, 2016

Algebra
L = 3S L + S = 510 Substitute 3S for L in the second equation and solve for S. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
July 14, 2016

Maths
It would help if you proofread your questions before you posted them. "boy 78meters" = 226 feet tall? Assuming that you meant cm: 200cm - 78cm = 122cm = 1.22m
July 14, 2016

statistics (?)
Lacking enough data.
July 13, 2016

math
I get: (24*5) + 8 = 128 Typo in your post or the book answer?
July 13, 2016

Math
x = y - 18.5 x + y = 100 Substitute y-18.5 for x in the second equation and solve for y. Insert that value into the first equation to solve for x. Check by putting both values into the second equation.
July 13, 2016

Maths
(1-.15)x = 85,000 Solve for x.
July 13, 2016

Algebra
Assuming it is a square area: 10 * 10 = 100 Perimeter = 2W + 2L However, it could be 5*20, 4*25, etc.
July 13, 2016

Math
The maximum area would be a square, 3 sides of 10m.
July 13, 2016

statistics (?)
Complete Question.
July 13, 2016

English Check answers
Agree
July 12, 2016

Algebra (?)
Writing a paper is not like painting a wall. There have to be agreements about what is to be written, which takes more time. I would not know how to figure this out.
July 12, 2016

math
It would help if you proofread your questions before you posted them. What are the dimensions of the floors? The 8x8 tile covers 64 square units (inches, cm?) Same with 16x16.
July 12, 2016

MATH
The knight must put the first plank diagonally across the corner of the moat, then put the second on the first. Cannot diagram here.
July 11, 2016

math
F = S + 500 .06F + .045S = 292.50 Substitute S+500 for F in the second equation and solve for S. Insert that value into the first equation to solve for F. Check by putting both values into the second equation.
July 11, 2016

math (?)
It would help if you proofread your questions before you posted them. What given equation?
July 11, 2016

science (?)
In a liquid? From a belt or cord?
July 11, 2016

Social studies
international What? Since this is not my area of expertise, I searched Google under the key words "executive and judicial branch" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=executive+and+judicial+branch&ie=UTF-8&oe=UTF-8&...
July 11, 2016

science (?)
What is your question?
July 10, 2016

Psych
risky shift phenomenon https://www.google.com/search?client=safari&rls=en&q=risky+shift+phenomenon&ie=UTF-8&oe=UTF-8&gws_rd=ssly
July 10, 2016

physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
July 10, 2016

Science
Since this is not my area of expertise, I searched Google under the key words "functions of water" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=functions+of+water&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
July 9, 2016

maths (?)
Need to complete
July 8, 2016

Algebra
l = w + 44 2w + 2l = 164 Do same process as previous post.
July 7, 2016

Algebra
g = 215 - s 10g + 6s = 1990 Substitute 215-s for g in the second equation and solve for s. Insert that value into the first equation to solve for g. Check by putting both values into the second equation.
July 7, 2016

math
Welcome
July 7, 2016

math
car x = 30 mpg car y = 25 mpg x = 45 - y 30x + 25y = 1275 30(45-y) + 25y = 1275 Solve for y, then x.
July 7, 2016

science (?)
Of what?
July 7, 2016

math
3a + 5o = 26 What multiples of 5 and 3 will = 26? 6 apples and 20 oranges
July 6, 2016

intermediate algebra
Cannot sketch here.
July 6, 2016

science
https://www.google.com/search?client=safari&rls=en&q=white+blood+cells+function&ie=UTF-8&oe=UTF-8&gws_rd=ssl
July 6, 2016

counseling
You cannot copy and paste here.
July 3, 2016

math
It would help if you proofread your questions before you posted them. Online "^" is used to indicate an exponent, e.g., x^2 = x squared "√" (v and option/alt) indicates square root online. W = a^2/√d Does that answer the question you did not ask?
July 3, 2016

Biology
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.
July 3, 2016

math
Can't see where any parentheses would make that true. Do you have typos?
July 3, 2016

Biology (?)
What is "prevent genotype"?
July 3, 2016

statistics
"More than 3 balls" = either 4 or 5 balls. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Either-or probabilities are found by adding the individual probabilities.
July 2, 2016

science (?)
What is "i"?
July 2, 2016

Statistics
Need to know standard deviation (SD). 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 for the Z score. Multiply by 1000.
June 30, 2016

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(bb) = 1/4 * 1/2 P(Aw/h) = 1/4 * 1/2 Either-or probabilities are found by adding the individual probabilities.
June 30, 2016

science
Light does not go through the iris.
June 30, 2016

math
It would help if you proofread your questions before you posted them. What is "1-3"?
June 30, 2016

Probability :(
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.
June 29, 2016

Biology
Since this is not my area of expertise, I searched Google under the key words "maintain water quality" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=maintain+water+quality&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
June 29, 2016

science (?)
What subsystems do you mean?
June 29, 2016

Psychology
http://www.simplypsychology.org/cognitive-dissonance.html
June 28, 2016

Math(AssignmentDueToday)
If Mail is almost a meter, would the scaled down version be larger? x = 38.2/19100 = ?
June 28, 2016

Math(Please 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.
June 28, 2016

Math
diameter = 2r 30/7 = 4 50/7 = 7 Area used = 28 * πr^2 = ? Subtract ? from 50*30 for waste
June 27, 2016

Math
No diagram. Cannot copy and paste here. Assuming the wall is 10 feet high: 12(10 - 2.75) - 36/2 = ? inches That is extremely low to hang a picture. Usually they are hung at close to eye level.
June 27, 2016

psychology
The reduction of tension and anxiety is immediate and negative.
June 27, 2016

Abnormal Psychology
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.
June 27, 2016

biology
I know blue eyes are recessive to brown, but I have no idea about the dominance/recessive relationship for straight/curly, dark/red hair.
June 27, 2016

stats
The probability of getting any one question right = 1/6. "at least 4 of the 6" means 4, 5 or 6 correct. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(4) = 1/6^4...
June 27, 2016

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
June 25, 2016

Math
10 + 19 = 29
June 25, 2016

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.
June 25, 2016

Algebra
Cannot graph on these posts.
June 24, 2016

Math
Cannot graph on these posts.
June 24, 2016

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.
June 24, 2016

Psychological Stats
No need to play, just insert data and solve. Z = (score-mean)/SD
June 23, 2016

math
Ten thousands
June 22, 2016

Math (?)
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. What is your question?
June 22, 2016

math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. x^2 - 6x + 9 = 64 x^2 - 6x - 55 = 0 Factor. What factors of -55 will add to give you -6?
June 22, 2016

maths (?)
It would help if you proofread your questions before you posted them. What is a "lakhs place"?
June 22, 2016

English
1, 2. Can indicates ability, while may indicates permission. 3 is awkward. 4, 5. You can feel better without actually being better. Symptoms may temporarily vanish. 7. Typical?
June 22, 2016

English
#2 infers that you don't look great without your uniform.
June 22, 2016

math
Smallest = 123,456,789.0 Largest = 9,876,543,210
June 22, 2016

math (?)
Cannot be done only knowing that 5 points are awarded for each correct answer. Score would be a multiple of 5. What information is missing?
June 22, 2016

Statistics
SEm = SD/√n Variance = SD^2
June 22, 2016

math
MEAN = ∑X/n = (7.75 + 6.30 + 6.30 + 7.00)/5 = ?
June 21, 2016

Math Geometry (?)
It would help if you proofread your questions before you posted them. "and and are"?
June 21, 2016

math
It would help if you proofread your questions before you posted them. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Do you mean 25-x^2 = 4x In that case, x^2 + 4x - 25 = 0
June 21, 2016

math
thousanths
June 21, 2016

Math (?)
It would help if you proofread your questions before you posted them. "hire purchase the...."?
June 20, 2016

Biology
23 pair before and after
June 20, 2016

Math(Please Help Me, Assignment Due)
B) 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 ...
June 20, 2016

Algebra
Boarding rate + miles(mileage rate) = Total cost
June 19, 2016

The mind at work (?)
What are your choices? Incentive? Encouragement?
June 19, 2016

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