Saturday
November 29, 2014

Posts by PsyDAG


Total # Posts: 18,738

math
8,924,001
September 2, 2014

math
Multiply top equation by 2. 2x + 4y = 14 3x - 4y = 6 Add the two equations. 5x = 20 Solve for x, then y.
September 2, 2014

math for praaaaaaaajiiii
Unsure of what you are asking. √39 = 6.245
September 2, 2014

math
What numbers?
September 2, 2014

math
It would help if you proofread your questions before you posted them. I assume you mean 4.5% commission. 148,500 * .045 = ?
September 2, 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.
September 2, 2014

math
A. $25.98 + 14.99 + 2.46 = ? B. $50 - ? = ??
September 2, 2014

Spanish
I prefer "¿Qué pasa?", but I don't know if that would be formal. You might try "¿Cómo lo pasa Vd?"
September 1, 2014

math
L = 3W - 10 LW = (3W-10)W = 3W^2 - 10W = 77 3W^2 - 10W - 77 = 0 Solve quadratic equation for W, then L.
September 1, 2014

math
(68/12)/8 = T/21 = 5.67/8 Solve for T in feet.
September 1, 2014

Psychology (Jill)
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Second, you are comparing naturalistic observation and being participant ...
September 1, 2014

English
2. in the hallway 4. Trash on the flower pots? 5. Won't the team win first place? 7. What is a magic block? With all the cleaning, are you trying for a job as janitor?
September 1, 2014

statistics
Work it from the other end, so you are using fewer values. You are less likely to make mistakes. A. 100(1.00 - .019) = ? B. 100(1.00 - .193) = ?
August 30, 2014

Math
(55min. * 7 classes * 5 days)/(60 min./hour) = ?
August 29, 2014

English
1. The visit. Elderly can be used to modify both.
August 29, 2014

English
A postcard is an open-faced correspondence, while a letter can be much longer and is typically enclosed in an envelope, so #2 does not mean #1. Delete "take" in first sentence. It would be more specific to indicate the topic of your speech and the type of conference...
August 29, 2014

Math
Answer what? Need to include original question.
August 29, 2014

math
6 is one more than 5, and they sum to 11.
August 29, 2014

science
It would help if you proofread your questions before you posted them. What is "ch3cn"?
August 28, 2014

math
14.75/29.50 = .5 Multiply by 100 for the percentage.
August 28, 2014

Science
Sorry, I misread. It said incorrectly. Agree.
August 28, 2014

Science
Disagree.
August 28, 2014

science
Volcanic eruption?
August 28, 2014

Science
Again I goofed. B is right.
August 28, 2014

Science
Disagree, beaker does not record data
August 28, 2014

Science
Agree with A. What does that have to do with math?
August 28, 2014

Business statistics
Assuming a normal distribution, it is symmetrical. So, if one half has mean of 8 + 2, the other half has mean of 8 - 2.
August 28, 2014

Business 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.
August 28, 2014

Biology
A, C is dependent variable
August 27, 2014

Math
477/10 = ? (round to whole number)
August 27, 2014

Biology
No, you are trying to see if changes in the independent variable cause changes in the dependent variable. If other variables are not held constant, they might be factors in causing dependent variable changes rather than or in addition to the independent variable.
August 27, 2014

7th grade Science
Manipulate/independent variable would be the number of paper clips, which determine the weight of the plane. Responding/dependent variable is the distance flown. Starting line and the same strength/style of the throw would be controls.
August 27, 2014

algebra
What is your question? Guessing what you want, s = 1 1/5c = 1.2c
August 27, 2014

Alegbra
Isn't it influenced by who gets the remaining pizza?
August 27, 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. Standard deviation = square root of variance I'll let you do the ...
August 27, 2014

Math for college readiness
4x^2v^4
August 27, 2014

math
When multiplying, add exponents. y^-6 = 1/y^6
August 27, 2014

algebra
If the two sides are equal, then: 3x-1 = 2x+2 Solve for x and then add the three sides.
August 27, 2014

math
Are they saying that you have divided by 1000? 913,256/1000 = 913.256
August 26, 2014

American Government
I would say B.
August 25, 2014

statistics
With your limited data, I would say .2 * 50 = 10
August 25, 2014

algebra
What first equation? -10(-10x-10y) = 100x + 100y
August 25, 2014

Math
In relation to Hiba? 6/5 and 3/2 respectively.
August 25, 2014

biology
https://www.google.com/search?client=safari&rls=en&q=anonyms&ie=UTF-8&oe=UTF-8&gws_rd=ssl
August 25, 2014

math
If the two digits are in their correct position, then the remaining two would be 1/10 * 1/10 = 1/100
August 25, 2014

science
Since this is not my area of expertise, I searched Google under the key words "Mirrors do not refract" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Mirrors+do+not+refract&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
August 25, 2014

Mathematoics
5/15 + 6/15 = 11/15 1 - 11/15 = 4/15 4/15 * (1 -1/4) = 3/15 = 1/5
August 24, 2014

psychology
People concentrate on the emotions rather than the task at hand, so "I can't" becomes a self-fulfilling prophecy.
August 24, 2014

mat/156
A) p B) Either-or probabilities are found by adding the individual probabilities. p + c C) no see C, sí ?
August 23, 2014

Algebra
agree.
August 23, 2014

stat
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)/SEm SEm...
August 23, 2014

stat
Z = (score-mean)/SEm SEm = SD/√n 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. Is it significant?
August 23, 2014

Science
Agree.
August 22, 2014

Spanish
evoking a past age
August 22, 2014

math
S + L + J = 41 L + 5 = J L - 6 = S (L-6) + L + (L+5) = 41 Solve for L, then S and J.
August 22, 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 for the Z score. Multiply by 15.
August 22, 2014

statistics
a. average of April sample b. weight c. No data given
August 22, 2014

Science
Agree.
August 21, 2014

Sociology
This question is asking what YOU think.
August 21, 2014

Sociology
They both explain different aspects of societies. See http://drdavespsychologypage.homestead.com/Decision_Trap.pdf
August 21, 2014

Algebra 1
($1050 - $800)/7months = ?
August 21, 2014

algebra
Add the two equations. 12x = 6 Solve for x and then insert that value into one of the equation to find y. To check, insert x value into the other equation.
August 21, 2014

Health
Yes. At least that happens with my scale.
August 21, 2014

math algebra
2/100 * A = p
August 21, 2014

math algebra
6 * 1/2 = 3 hours
August 21, 2014

math
C = πd I don't see how the value for the circumference and diameter could both be 7. Do you have a typo?
August 21, 2014

math
Something does not make sense. If the boat is full while paying 10, wouldn't adding 3 students overload the boat? Also some data is missing. What is the total charge for the boat?
August 21, 2014

math
Let x = son's age, and y = father's age y = 7x y-2 = 13(x-2) = 13x - 26 Substitute 7x for y in the second equation. 7x - 2 = 13x - 26 Solve for x, then put that value into first equation. Check by putting both values into the second equation.
August 21, 2014

maths
A = 1/2bh 1.84 = 1/2b(1.6) Solve for b.
August 21, 2014

maths
A = 1/2bh 1/3 = x/A Insert values to solve for A, then x.
August 21, 2014

maths
To conceptualize the order, convert to decimals.
August 21, 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.
August 21, 2014

math
8/16575 = .000483
August 20, 2014

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. For subsequent picks, the deck lacks one more card. 4/52 * 4/51 * 4/50 = ?
August 20, 2014

math
You don't indicate whether the remaining persons own bonds or neither bonds or stocks. If the former, I agree.
August 20, 2014

math
3x + 2(-2) = -7 Multiply. 3x - 4 = -7 Add 4 to both sides. 3x = -3 Divide by 3. x = -1
August 20, 2014

Math
Since it is two-tailed, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05 rather than .10) and insert its Z score in the equation below. 90% = mean ± 1.645 SEm SEm = ...
August 20, 2014

math
Z = (score-mean)/SEm SEm = SD/√n Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for each Z score.
August 20, 2014

biology
Yes, both do reproduce.
August 19, 2014

Science
agree.
August 19, 2014

statistics
The expected number would be 41/75 * 100 = 55, but I don't see data that would allow me to estimate a significant difference from that value.
August 19, 2014

math (?)
Lacking sufficient data.
August 19, 2014

statistics (?)
Where is the data?
August 19, 2014

statistics
I assume that you are talking about the standard error of the mean. SEm = SD/√n
August 18, 2014

Health
Agree.
August 18, 2014

Health
Agree.
August 18, 2014

math
L = 3W - 7
August 18, 2014

Biology
The metabolic differences are the answer. Birds are endothermic, while reptile are ectothermic.
August 18, 2014

life science
Wouldn't leaves lose water content more quickly? Relate that to adaptation.
August 18, 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 each Z score.
August 17, 2014

math
Yes, assuming x = # of minutes.
August 17, 2014

math
⁄Mia Culpa! Sorry.
August 15, 2014

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. For blue = 4/6 * 3/5 = 2/5 For green = 2/6 * 1/5 = 1/10 Either-or probabilities are found by adding the individual probabilities...
August 15, 2014

Language
Me too.
August 14, 2014

Language
Sentence is correct.
August 14, 2014

Language
Right.
August 14, 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 (.8000) and its Z score. Insert Z score in the equation above and solve for score.
August 13, 2014

Biology: Genetics
Yes.
August 13, 2014

Biology: Genetics
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.
August 13, 2014

Biology (?)
Lack data. What previous four questions?
August 12, 2014

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