Monday
May 30, 2016

Posts by PsyDAG

Total # Posts: 21,906

Math
B = 2S B - 600 = P B + P + S = 6900 2S + (B-600) + S = 6900 2S + (2S-600) +S = 6900 Solve for S.
November 16, 2015

Math
L = 2W + 8 2L + 2W = 100
November 16, 2015

algebra
It would help if you proofread your questions before you posted them. What quadratic function?
November 16, 2015

Math
http://www.celsius.co.uk/converter/
November 16, 2015

Psychology
The photoreceptor would sense brightness, whether rod or cone. However, since the cones work in combination to sense colors, that would not happen. Amount of light = brightness.
November 16, 2015

Science
What questions? We do not have lesson 9. 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.
November 16, 2015

spanish
What are your choices? ellos dan?
November 16, 2015

biology
Since this is not my area of expertise, I searched Google under the key words "history of the discovery of DNA" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=history+of+the+discovery+of+DNA&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
November 16, 2015

math
For whole numbers, 2 and 1. If fractions, it can almost be infinite.
November 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 ...
November 15, 2015

English
Noun
November 15, 2015

college math
3/5 = x/2000 Solve for x.
November 15, 2015

statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/49 * 1/48 * 1/47 * 1/46 * 1/45 * 1/44 = ? There is an equation for this, but I don't remember it.
November 15, 2015

Math 6th grade
Verbal presentation is presentation with words (e.g., two thousand fourteen).
November 15, 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.
November 15, 2015

math
Let x = John's age (x-4)/2 = (x+5)/3 Solve for x.
November 15, 2015

Algebra
21.25
November 15, 2015

math
3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 39-42 pages
November 15, 2015

Biology
Stable environment where?
November 14, 2015

Biology
Other organisms produce them.
November 14, 2015

Math
M = F - 3 M = 4W Substitute F-3 for M and solve.
November 14, 2015

math
What original function?
November 14, 2015

Biology
a. How can it be dominant, if there are carriers who do not have the disease? b. No, use Punnett Square: https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 13, 2015

Biology
a. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl b. Note that the male Y-chromosome does not have a normal clotting gene to dominate the recessive h gene on the X, so males cannot be just carriers. If they have one h gene, ...
November 13, 2015

math
A square would get the maximum area. (720/3)^2 = ?
November 13, 2015

Biology 30
a. Child would receive either A or B from mom, so could never have type O blood. There is no indication whether the parents are + or -. b. Do punnett square: https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 13, 2015

Statistics
Ho: error1 = error2 Ha: error1 ≠ error2 Ho: new = old Ha: new > old
November 13, 2015

Science
Agree.
November 13, 2015

Statistics Help!
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.
November 12, 2015

science
A, B (disadvantage for the bacteria)
November 12, 2015

science
Varying sieves?
November 12, 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 (.758) and its Z score. Insert data into equation above to calculate score.
November 12, 2015

math
Pythagorean theorem a^2 + b^2 = c^2 (hypotenuse)
November 12, 2015

math
None. You cannot copy and paste here.
November 12, 2015

english
Since this is not my area of expertise, I searched Google under the key words "suddenly" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=suddenly&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=cMZEVo_kNOWD8QfHxYzYBg In the future, you can find ...
November 12, 2015

Statistics Help Please!
If P = .01, then directional would look for P = .01. If nondirectional, you would look for P = .005 in either direction.
November 12, 2015

science
Since this is not my area of expertise, I searched Google under the key words "pftba" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=pftba&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more ...
November 11, 2015

math (?)
It would help if you proofread your questions before you posted them.
November 11, 2015

Statistics
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 "...
November 11, 2015

MLA citation
https://www.google.com/search?client=safari&rls=en&q=mla+format&ie=UTF-8&oe=UTF-8&gws_rd=ssl
November 11, 2015

Paleontology needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Also it makes it much easier for us to respond, if the answers are listed with each question (e.g., *). 13 &14 are right.
November 11, 2015

Math
b + 5 9/8 = 5 6/8 Subtract 5 9/8 from both sides.
November 11, 2015

Algebra Math
Welcome.
November 11, 2015

Algebra Math
L = 3W +2 2L + 2W = 116 Substitute 3W+2 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.
November 11, 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.
November 11, 2015

math
Could designate in gallons (above), quarts, and scientific notation.
November 11, 2015

Statistical Math (?)
More data needed. Also, what do B, P and R signify?
November 11, 2015

math
You need to post the problem.
November 11, 2015

maths
1. 1 litre = 1000 ml 2. 2.199, 2.2, 2.22 3. 20 - 2x = 1 Solve for x.
November 11, 2015

statistic concept application
Lacking data. Mean? Standard Deviation?
November 11, 2015

English
It could be either, but I would bet on the Park.
November 10, 2015

science help ASAP
Agree with first but not second.
November 10, 2015

science help
Disagree. Fighting is cooperative?
November 10, 2015

Math lacking data
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. It would help if you proofread your questions before you posted them.
November 10, 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.
November 10, 2015

math
36/4 = ?
November 10, 2015

Statistic
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...
November 9, 2015

math
Since he always has the dollar bill, the problem then goes to how many ways can he make $.75 out of quarters and dimes. If both have to be used, it would only be 5 dimes and one quarter — one way. However, it could also be done with 3 quarters alone, giving you two ways. ...
November 9, 2015

math -4th grade
Agree with your answers.
November 9, 2015

4th grade 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.
November 9, 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.
November 9, 2015

Psychology
Haven't noticed Ms Sue haters, but even so, your post is unnecessary in inappropriate.
November 9, 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. Also, it would help if you proofread your questions before you posted them. Data is missing.
November 9, 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.
November 9, 2015

Statistics
a) For the population, what about the residents who are not listed in the phone book?
November 9, 2015

Spanish
¡Que bueno!
November 9, 2015

Spanish
¡verdad!
November 9, 2015

maths
Let x = starting sum x - x/2 - x/4 = 1.25 Multiply by 4. 4x - 2x - x = 5
November 9, 2015

Stats
a. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.005) and its Z score. 99% = mean ± Z (SD) = 34 ± 2.575(12) b. Z = (score-mean)/SEm SEm = SD/&#...
November 9, 2015

Allide school
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. (52.5*32.5) - (50*30) = ?
November 9, 2015

math
a^2 + b^2 = c^2 Insert values to see which fits.
November 9, 2015

psychology
You would walk 30º to the right, but you will not adapt to the glasses, even trying to correct you perception, until using them for an extended period of time. I hope this helps.
November 9, 2015

psychology
So, what do YOU think? 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.
November 9, 2015

Comm Tech
Agree with #1, but not #2. No scatter plot available.
November 9, 2015

health
Which path? The ovum developing and coming down or the sperm coming up?
November 8, 2015

Statistics and probability
Getting a score 104 or higher: Z = (score-mean)/SD Getting a mean of 104 or higher: Z = (score-mean)/SEm SEm = SD/√n For both, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/...
November 8, 2015

math
a - c
November 8, 2015

statistic
c) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.99) and its Z score. Insert data into equation below. Z = (score-mean)/SD d) Using same table, Z = (score-mean)/SEm SEm = ...
November 7, 2015

Statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/15 * 7/15 = ?
November 7, 2015

math
10 * -12 = -120
November 7, 2015

maths
Cannot draw shapes on these posts.
November 6, 2015

math's
It would help if you proofread your questions before you posted them. The average of how many numbers? What seven numbers?
November 5, 2015

SCIENCE HELP
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.
November 5, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "tools used to collect data in space" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=tools+used+to+collect+data+in+space&ie=UTF-8&oe=UTF-8&gws_rd=ssl In...
November 5, 2015

biology
Put the bag over the mouth of the beaker and push?
November 5, 2015

6th grade Math
1/4 * 8/2 = ?
November 5, 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 your later post.
November 5, 2015

stat
What is your question?
November 5, 2015

Math 141
I assume that one die = 3. The other numbers to get ≤ 7 are 1, 2, 3, 4. Since the other die has six sides, what are the odds?
November 5, 2015

Math 141
I assume that on of one die = 3. The other numbers to get ≤ 7 are 1, 2, 3, 4. Since the other die has six sides, what are the odds?
November 5, 2015

Zibonele high school
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
November 5, 2015

Math
Correct as far as you went, but what are the probabilities? 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 the Z scores. D) Either-or ...
November 5, 2015

math
Takeoff, each stop and landing. How many is that?
November 5, 2015

Algebra 2
$2.50 + $2m = C $2/mile sound very high. Typo?
November 5, 2015

technical drawing
Cannot draw on these posts.
November 5, 2015

Math
It would help if you proofread your questions before you posted them. Does V earn > or < F? If >, then V = F + 2.25 If <, then V = F - 2.25 V + F = 14.55 Substitute F ± 2.25 for V in the last equation and solve for F. Insert that value into the first ...
November 5, 2015

Math
6 - 3 3/8 = 5 8/8 - 3 3/8 = 2 5/8 remaining Since the remaining portion is too small to wrap another present, you would need 3 pieces. However, if you combined two 2 5/8 pieces for one present, you would only need 2 pieces.
November 4, 2015

Marh
Yes, 1/12 of the total, whatever that is.
November 4, 2015

6th grade Math
It would help if you proofread your questions before you posted them. From your data, I have no idea how you got a negative number.
November 4, 2015

math
Something sounds "fishy" here. Three is included in "three or more." I would hope that the lower price is honored.
November 4, 2015

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