Thursday
October 23, 2014

Posts by PsyDAG


Total # Posts: 18,505

science
Dominant traits will perpetuate, while recessives may not.
March 6, 2014

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. Different names will not make it speedier either.
March 6, 2014

math
(x-5)(x-3) = 0 x = 5,3
March 6, 2014

Math
1/3 + 5/6 = 2/6 + 5/6 = 7/6 = 1 1/6
March 6, 2014

Math
If the triangle is equilateral, then: 5x - 7 = 2x + 5 Solve for x.
March 6, 2014

MAT-134 Math XL
9x^4(x^2-7x+4)
March 6, 2014

Science
mitosis
March 6, 2014

Math 100
Isn't gross sales identical to plan B? 12(2400) + .09(2400)12 > 32000
March 6, 2014

math 100
2x>3x-40 An inequality is treated just like an equation, except that multiplying/dividing by a negative value reverses the carat (< to >). -x > -40 x < 40
March 6, 2014

Biology -Genetics
False, they are also found in all body cells, except only the males have Y.
March 5, 2014

math
3/7 three chances out of seven
March 5, 2014

Math
You are welcome!
March 5, 2014

Math
a. (1 - .25) 10 = x b. 1.25x = 201 Solve for x.
March 5, 2014

Spanish
Qué
March 5, 2014

Science
What about spiral shaped?
March 5, 2014

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.
March 5, 2014

6th grade science
The gene for hemophilia is sex-linked, a recessive on the X-chromosome. The daughter must have both Xs with the gene, while the son does not have the gene on his X chromosome. With that information, you should be able to get the parental genotypes.
March 5, 2014

statistics (?)
What null hypothesis do you want to consider?
March 5, 2014

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.
March 5, 2014

science
The process of body cell replication. https://www.google.com/search?client=safari&rls=en&q=mitosis&ie=UTF-8&oe=UTF-8
March 5, 2014

science (?)
What is a "prac"?
March 5, 2014

science
Since this is not my area of expertise, I searched Google under the key words "newtons first law" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=newtons+first+law&ie=UTF-8&oe=UTF-8 In the future, you can find the information you ...
March 5, 2014

Math (?)
We haves no idea of the arrangement, especially the corners.
March 4, 2014

math
Temperature > -20º F
March 4, 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. See your later post.
March 4, 2014

Math 3
Population is the total group, while the sample is a portion of that total.
March 4, 2014

math Standard deviation
Z = (score-mean)/SD Insert values and calculate.
March 4, 2014

math probability
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 score.
March 4, 2014

math
360 * .80 = ?
March 4, 2014

algebra
A = 450 - C 70A + 40C = 27750 Substitute 440-C for A in second equation and solve for C. Insert that value into the first equation and solve for A. Check by inserting both values into the second equation.
March 3, 2014

home,school &COMMUNITY
Also, please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you.
March 3, 2014

Algebra help PLEASE?
V = π*r^2*h Insert values and calculate.
March 3, 2014

math
Divide the amount of change by the original amount. (4-12)/12 = ? (20-15)/15 = ?
March 3, 2014

Math oops
3.5y = 10.5 - 2.1 = 8.4 y = 8.4/3.5 = ?
March 3, 2014

math
(76 - 51)/76 = ?
March 3, 2014

Math
7/8(20) = 17.5 1/4x = 17.5 Solve for x.
March 3, 2014

math
What is 1/2 as decimal or percent?
March 3, 2014

Math (?)
Possibly it might signify the volume of a cylinder. Cannot solve without equal sign for an equation. To simplify, multiply the terms.
March 3, 2014

Spanish
With my basic Spanish: How do you want the means of communication to be/function?
March 3, 2014

Chem needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
March 3, 2014

math
We cannot show visual models on the posts. Draw a diagram?
March 3, 2014

science HELP ASAP!!!!!!!
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.
March 3, 2014

Algebra
L = 2W + 3 2L + 2W = 72 Substitute 2W+3 for L in second equation and solve for W. Insert that value into the first equation and solve for L. Check by inserting both values into the second equation.
March 2, 2014

psychology
Agree
March 2, 2014

interpersonal communication
http://drdavespsychologypage.homestead.com/Relationships__Starting_and_Continuing.pdf
March 2, 2014

interpersonal communication
You cannot copy and paste here.
March 2, 2014

education (?)
What business plan? 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.
March 2, 2014

statistics
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. Percentile rank is the proportion below a particular score. OR… http://davidmlane.com/hyperstat/...
March 2, 2014

math
Mode = most frequently occurring score(s) Median = arrange in order of value, then find middle-most score. Mean = 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 ...
March 2, 2014

Dividing decimals
Move decimal place one to the right for both and then proceed with normal long division.
March 2, 2014

Statistics (?)
Data missing.
March 1, 2014

Statistics
99% = mean ± 2.575 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. To include each end, double proportion.
March 1, 2014

SAT prep help
-2x+5=2-5+2x Put like terms on the same side of the equation by adding 3 and 2x to both sides. 8 = 4x
March 1, 2014

science (?)
It would help greatly to know the context of the term.
March 1, 2014

Pys 202
a case study?
March 1, 2014

Geometry
V = hπr^2 h = V/πr^2 Insert values and solve for h.
February 28, 2014

science
Average about 28 days. Diagram lacking. You cannot copy and paste here.
February 28, 2014

math (?)
No line of best fit. You cannot copy and paste here.
February 28, 2014

Biology
agree
February 28, 2014

statistics
Either-or probabilities are found by adding the individual probabilities. .43 + .14 = ?
February 28, 2014

biology
Since this is not my area of expertise, I searched Google under the key words "transcription molecules" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=transcription+molecules&ie=UTF-8&oe=UTF-8 In the future, you can find the ...
February 28, 2014

Math (?)
Graphs not shown, Cannot copy and paste here.
February 28, 2014

math
C = πd d = 2r In your case: C = 50 * π * 2r Insert values and calculate for C
February 28, 2014

Math (?)
What is "your original set"?
February 28, 2014

Statistics
If "the probability of birth is equal in all months," that means that you would expect 10 students to be born in each month. Would either distribution apply in this case?
February 28, 2014

Statistics
Are the means from the same population or different?
February 28, 2014

Science
Agree
February 27, 2014

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1. 35 + 50 + (25/5 * 5) - (8+11) = 110 - 19 = 91 2. 24/8 + 31 = 34 3. 3 + 2(7) = 17 4. 5(3) - 16 = 15 - 16 = -1 5. right.
February 27, 2014

BIOLOGY
Not willfully, but random mutation does occur.
February 27, 2014

ethics
I disagree. http://www.utilitarianism.net/singer/by/1972----.htm
February 27, 2014

consumer math
($15,876 * 1.0525) - .1($15,876) = ?
February 27, 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. See your later post.
February 27, 2014

math
Volume = height * Base Therefore: V/B = h Insert values and calculate.
February 27, 2014

ethics
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.
February 27, 2014

algebra
Do you mean 5 -(+2)? 5 - (+2) = 5 - 2 = 3
February 27, 2014

Algebra
With 2π factored out… (x^2 + 4x + 4) + (x^2 + 7x + 10) = 2x^2 + 11x + 14 or 2π(2x^2 + 11x + 14)
February 27, 2014

math
81 > n^2 = (-8)^2
February 27, 2014

math
35 + 35 = 70 (?)
February 27, 2014

Math
-6x^2 + 15x
February 27, 2014

Math 102
(30.60-18)/18 = ?
February 27, 2014

math
(8*32) - 52 = ?
February 27, 2014

Alegbra
Substitute 4c for d in first equation and solve for c. Insert that value into the second equation and solve for d. Check by inserting both values into the first equation.
February 27, 2014

Math
15.025
February 26, 2014

Psychology
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results. Extraneous variables — other than the independent ...
February 26, 2014

Psychology
Responses consistent over time, places and persons are attributed to one's personality. Consequences to an organism's responses are the key relationship in operant conditioning. Rewarded responses will continue or increase, nonrewarded responses will go to extinction. ...
February 26, 2014

health
http://drdavespsychologypage.homestead.com/AIDS_in_Arizona.pdf
February 26, 2014

Maths (?)
We cannot see the figure. You cannot copy and paste here.
February 26, 2014

statistics
Z = (score-mean)/SD Either use the handout or 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.
February 26, 2014

Mathematic
1000
February 26, 2014

math
4(6+2) - 6 = 26
February 26, 2014

Science (?)
Missing needed data. Cannot copy and paste here.
February 25, 2014

algebra
2L + 2W < 330 L < 90 180 + 2W < 330 2W < 150 W < 75
February 25, 2014

math (?)
What do c and d signify?
February 25, 2014

math
7.5 mm
February 25, 2014

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. .06x = 9.33 x = 9.33/06 = 155.50
February 25, 2014

Math
5 + .04t < 2 + .10t 3 < .06t t > 3/.06 = 50
February 25, 2014

MATH (?)
How many of each color are in a package?
February 25, 2014

math
(2.50-1.75)M - 40 = 550 .75M = 590 M = 590/.75
February 25, 2014

Algebra Readiness
The previous post is for the square cake. Need more data for the "heart cake."
February 25, 2014

Algebra Readiness
L = W = 8 2W + 2L = Perimeter W * L = area
February 25, 2014

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