Friday
August 26, 2016

Posts by PsyDAG

Total # Posts: 22,159

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.
January 12, 2016

Science
1. Identical twin studies 2. Depends on the type of mutation. 3. eye color
January 12, 2016

Math
c = 28-a-b = 28-a-(a+3) a+3+(a+3)+10[28-a-(a+3) = 131 Solve for a, then b and c.
January 12, 2016

HELP_ME_PLEASE_VERY FAST
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 12, 2016

Math
First and third problems are wrong.
January 12, 2016

algebra
x/6 + 3/8x = 13 Solve for x, after multiplying equation by 24.
January 12, 2016

STATS
Z = (score-mean)/SD Insert Z, mean and SD values to solve for scores
January 12, 2016

math
It would help if you proofread your questions before you posted them. "Rach?" More data needed.
January 11, 2016

Math
Since this is not my area of expertise, I searched Google under the key words "calculate angles" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=calculate+angles&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
January 10, 2016

English
In relation to the second question, watch out for a decision trap. http://drdavespsychologypage.homestead.com/Decision_Trap.pdf
January 10, 2016

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 ...
January 10, 2016

math
Is the 4.5 the radius, diameter or circumference? Same with flowers.
January 10, 2016

math
3m = 300cm 2m = 200cm Cut-out piece = 250 * 90 = 22,500cm^2 (300*200)-22,500 = remainder Find ratio of cut-out piece to remainder.
January 10, 2016

Math
right
January 10, 2016

Psychology
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. A
January 9, 2016

Science
Few fossils? Quality of whatever fossils are found?
January 8, 2016

check my english partial
1. a However, I am not familiar with the prose selections.
January 8, 2016

math
7 - 5 = ?
January 7, 2016

Math (?)
What risers? Cannot copy and paste here.
January 7, 2016

Math
Multiply the three together to get one number. You can include other prime numbers to get other products. 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...
January 7, 2016

science please help anyone
We cannot create a digital model here. However, I would reverse the order of calculation, starting with present day at the right.
January 7, 2016

Math
5 * 3 * 7 = ? 5 * 3 * 7 * 2 = ? Continue on.
January 7, 2016

fourth grade math
No scatter plot. Cannot copy and paste here.
January 7, 2016

math (?)
What is the starting point?
January 7, 2016

Biology (?)
No choices given. Cannot copy and paste here.
January 7, 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.
January 7, 2016

biology
Does it have a cell wall?
January 6, 2016

Spanish
"Hablo" is first person presnt.
January 6, 2016

Art (?)
You cannot copy and paste here. What piece? What choices?
January 6, 2016

science
It would not mean much.
January 5, 2016

help
First, indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Second, we don't know what "you learned about." Lastly, we do not do your homework for you. Although it might take more ...
January 5, 2016

Spanish 2
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 5, 2016

math
Do you have typos here? First, a cat cannot walk 2,190 miles in 2 hours. 2,190/2 = 1,095 = 1000 + 90 + 5
January 5, 2016

math (?)
What do you want us to find?
January 5, 2016

English
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.
January 5, 2016

Biology (Mitiku)
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. Since this is not my area of expertise, I searched Google under the key ...
January 5, 2016

Biology (Jerry)
Since this is not my area of expertise, I searched Google under the key words "acids polar vs. nonpolar" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=acids+polar+vs.+nonpolar&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can ...
January 5, 2016

English
As an academic paper it is okay. However, if you are depressed and seeking help in committing suicide, it would be much better to get psychological help, such as from a school counselor.
January 5, 2016

Math (?)
What sets of compatible numbers are you using?
January 4, 2016

Math
It sounds like a bimodal distribution.
January 4, 2016

algebra
First, we cannot draw a rectangle on these posts. Second, 5 times x = 5x and 5 times 2 = 10.
January 4, 2016

Biology
Since this is not my area of expertise, I searched Google under the key words "chromosomal mutation vs point mutation" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=point+vs.+chromosomal+mutation&ie=UTF-8&oe=UTF-8&gws_rd=ssl#q=...
January 4, 2016

statistics (?)
Total income? We cannot see pie chart. You cannot copy and paste here.
January 4, 2016

math
$1.82 * 1.15 = ? $1.82 * .95 = ?
January 3, 2016

MATHS
I assume it is 1/4 of the remainder from the first week, so what she brings home is 1/3 * 3/4 = ?
January 3, 2016

Science Fair
I would suggest asking your instructor. However, making a hot air balloon and going up in it is a VERY ambitious and somewhat dangerous project.
January 2, 2016

biology
Since this is not my area of expertise, I searched Google under the key words "carbohydrate,proteins and fats" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=carbohydrate,proteins+and+fats&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
January 1, 2016

Business Math
A = p(1+rt) = 1632(1+.04*2) = ?
January 1, 2016

Math
Yes Happy New Year!
December 31, 2015

Happy New Year!
Same to you!
December 31, 2015

Statistics
1/32 Happy New Year!
December 31, 2015

psychology
Agree with Reed, but HAPPY NEW YEAR anyway.
December 31, 2015

Psychology
Is something wrong with their car?
December 30, 2015

Psychology
I searched Google under the key words "gender differences in mental ability" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=gender+differences+in+mental+ability&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
December 30, 2015

science
an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
December 29, 2015

math - probability
Do not know what f and c indicate. Note that the first half of the alphabet include 3 vowels. 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 ...
December 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.
December 28, 2015

Math
How many hours is the store open? Would any specific employee work more than one day?
December 28, 2015

matrix (?)
What is your question?
December 28, 2015

stats
Z = (score-mean)/SD = ([114-1]-125)/6 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.
December 27, 2015

statistics
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.
December 26, 2015

math
N = U - 13 S = 2U + 8 U + N + S = 103 Substitute U-13 for N and 2U+8 for S in the third equation and solve for U. Insert that value into the first equations to solve for N and S. Check by putting all values into the third equation.
December 26, 2015

statstics a level s1
Cannot draw tree diagram on these posts. Probability of picking one of those cards in each of three picks. 20/52 * (20-1)/(52-1) * (20-2)/(52-2) = ?
December 25, 2015

math
(23.5^2)/64 = ?
December 25, 2015

maths
What is your question? I assume: 3x^3 - 2x^2 - 9x + 9
December 25, 2015

Human growth
yes
December 24, 2015

Statistics
How many squares do you have in your Chi-square?
December 23, 2015

Statistics
Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n = number of cells Look up value in X^2 table in the back of your ...
December 23, 2015

Math
If the pennant is a right triangle, you only need one. The theorem does not apply, unless you are concerned with the length of sides or hypotenuse.
December 22, 2015

Math
The Pythagorean Theorem applies only to right triangles. Will your pennant be a right triangle? A pennant is typically an isosceles triangle. Can you construct an isosceles triangle from a group of right triangles?
December 22, 2015

statistics
A. 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 (.04) and its Z score. Insert Z into above equation and solve for score.
December 22, 2015

math
w - 1 = b r = w + 2 r + w + b = 28 (w+2)+ w + (w-1) = 28 Solve for w, then r and b.
December 20, 2015

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.
December 19, 2015

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
December 19, 2015

math
m = 2s (m-10) = 4(s-10) Substitute 2s for m in the second equation and solve for s.
December 19, 2015

Language (?)
What novel?
December 18, 2015

science
Mother would have to be BO, so child has a chance of A phenotype. 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 Since hemophilia is an X-linked gene, what is the chance of getting the hemophila gene from ...
December 18, 2015

english
When Not to Use Commas with Who and Which There is often confusion about when to use commas with who and which. Unfortunately, there is no simple rule. Sometimes there should be commas and sometimes there should not. The rule is: When the information provided by the clause is ...
December 17, 2015

science help
Shouldn't that be done BEFORE severe weather occurs?
December 17, 2015

Science
1. d 2. b 3. c 4. b
December 17, 2015

Biology
No figure. Cannot copy and paste here.
December 17, 2015

Biology
Right!
December 17, 2015

Biology
No, acidic is below 7.
December 17, 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.
December 17, 2015

Algebra 1
He's hungry? Lack Data.
December 17, 2015

math
5.4/810(converted to feet) = ? 1m = 3.28 feet
December 17, 2015

Math
No figures shown. Cannot copy and paste here.
December 17, 2015

math
15/5 = 3 (15-3) + 12 = ?
December 17, 2015

math
What is your question(s)?
December 17, 2015

Statistics
Histogram would also be normally distributed. How many modes does a normal distribution have? 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...
December 16, 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 (.90) and its Z score. Insert data into equation and solve for score.
December 16, 2015

Statistics
It would help if you proofread your questions before you posted them. Have no data on ovens. 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/...
December 16, 2015

science help PLS
Although this is not my area of expertise, I would choose larger.
December 16, 2015

science
http://www.childrensheartinstitute.org/content/blood-flow-diagram.html https://www.google.com/search?q=spine+joints+anatomy&client=safari&rls=en&tbm=isch&imgil=RGwtYIvv8IITYM%253A%253BPeT0NG0OXkL7nM%253Bhttp%25253A%25252F%25252Fwww.agingspinecenter.com%25252Fcontent%...
December 16, 2015

S.S
No following. Cannot copy and paste here.
December 16, 2015

Math (Statistics)
(1-.81)21 = ?
December 14, 2015

Science
Which would be needed for a predator rather than the prey?
December 14, 2015

statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 12/50 * (12-1)/(50-1) * (12-2)/(50-2) = ?
December 13, 2015

probability distribution
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Do you mean "no" red balls or number of red balls?
December 13, 2015

Biology
Assuming that the DNA changes effect phenotype and/or behavior (some do not), your assumption is correct. No clarification necessary.
December 13, 2015

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