Friday
July 31, 2015

Posts by PsyDAG


Total # Posts: 20,066

Math (Statistics)
Actually doing the experiment?
January 23, 2015

earth
A=4πr^2 V=4/3πr^3 A/V = 4πr^2/(4/3πr^3) Some of the terms cancel each other out. 4πr^2/(4/3πr^3) = 1/3r
January 23, 2015

math
I assume the tickets were for a lottery. If the payoffs are the same, your chances are of winning are better with more tickets.
January 23, 2015

math
One in each corner plus one in the middle of each longer side.
January 22, 2015

LAW
The two variables are positively correlated, one varies directly with the other. Does that help?
January 22, 2015

Math
Insufficient data.
January 22, 2015

Math
x ≤ 8. "≤" = less than or equal to. Anything 8 or less.
January 22, 2015

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. y = 7 * 4x linear
January 22, 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.
January 22, 2015

HELP!
There are typically fewer predators than prey.
January 22, 2015

STATISTICS(PLEASE READ)
6 * 365 = 2190 days 2.5 * 365 = 912.5 days What criterion are they using for the warranty? Mean? Mean + 1 SD? Mean + 2 SD?
January 22, 2015

Algebra
89 + 135 + c = 325 Calculate for c.
January 22, 2015

math
What is your question? I'm guessing. (5 - 2x)(3 - 2x) = 12 Solve for x.
January 22, 2015

algebra
Multiply both sides by x. 3 - x + 1 + x = 4 4 = 4
January 22, 2015

maths
It would help if you proofread your questions before you posted them. From 11 to what?
January 22, 2015

statistics
mean = ∑x/n = (.310 + .301 + .277)/3 = ?
January 22, 2015

biology
Rr for both. Check with Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
January 22, 2015

Math
3 * 1/12 = ?
January 22, 2015

math
No numerical data given, so I would say none.
January 22, 2015

math
If the length was increased, the width would need to be decreased to have the same area.
January 22, 2015

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. With each draw, there is one less sock total. 5/10 * 3/9 * 2/8 = ?
January 21, 2015

Math
(1 - .2)x = 72 Solve for x.
January 21, 2015

stat
mean = ∑x/n Calculate both means and subtract one from the other.
January 21, 2015

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1/4)^2 = ?
January 21, 2015

Math
How do the proportion of $9 tickets compare to $5 tickets?
January 21, 2015

Math
Bags * apples * ounces = Total
January 21, 2015

Math
purple/total colors = ?
January 21, 2015

math
It would help if you proofread your questions before you posted them. What is the statement?
January 21, 2015

Science
Disagree.
January 21, 2015

Math
25 > 14 ?
January 21, 2015

statistics
http://support.minitab.com/en-us/minitab/17/topic-library/basic-statistics-and-graphs/introductory-concepts/data-concepts/cat-quan-variable/
January 21, 2015

public speaking
Depending on the definitions of "street," I would disagree. If one person is the speaker, and one or more are just listeners, it would be a "one-way street, e.g., listening to radio or TV. There is no communication in the opposite direction, which is needed to ...
January 21, 2015

psychology
Not knowing Ms.Sue's response, Consider tornadoes, floods, earthquakes, etcetera.
January 21, 2015

Math
Amy = 15/3 per hour John = 30/5 per hour
January 21, 2015

Math
No. 14 - 4 = 10
January 21, 2015

math
Let x = kids' price, then 2x = adults'. 5x + 3(2x) = 60 Solve for x.
January 21, 2015

check?
Although this is not my area of expertise, I do have one comment. 1. "same" = uniform
January 21, 2015

Biology
If only two alleles of one gene are involved, it would be monohybrid. Since curly-winged is heterozygous, curly would be dominant, Cs. Assuming straight-winged is homozygous, ss. Take it from there.
January 21, 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. Possibly this will help: An independent variable is the potential stimulus or cause, usually...
January 21, 2015

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.
January 21, 2015

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Both boys = 60/120 * 59/119 = ? Same for both girls. Either-or probabilities are found by adding the individual probabilities.
January 20, 2015

math
x - y = 4 Add y to both sides. x = y + 4 x + y = 12 Substitute y+4 for x in last equation and solve for y. Insert that value into the first equation and solve for x.
January 20, 2015

Algebra
Simplify? Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 25-2(8-2x^3)-4 = 25 - 16 + 4x^3 - 4 = 4x^3 + 5
January 20, 2015

statistics(please answer!)
What is c?
January 20, 2015

literature
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. The most obvious form of discrimination is BASED ON skin color. Crooks is segregated BECAUSE of his skin shade. “They play cards in ...
January 20, 2015

6TH GRADE MATH
Disagree. After she spends 235, she still winds up with 1500? D has a typo = -1,265
January 20, 2015

Algebra
To get x alone on one side, you have to subtract 8 from both sides. x + 8 - 8 = -15 - 8
January 20, 2015

english
I'll start you out. Sucking blood, sleeping in a coffin….
January 20, 2015

Biology
What is your choice?
January 20, 2015

story problem
Assuming that "more" does not mean "more than 350," 600 - 350 = ?
January 20, 2015

Science
I don't know about grasshoppers, but with humans, sex-linked genes only occur on the X chromosome. http://www.biologycorner.com/bio2/genetics/notes_incomplete_dominance.html In the future, you can find the information you desire more quickly, if you use appropriate key ...
January 20, 2015

statistics
It definitely would not be effective.
January 19, 2015

math
Factor both dimensions. 60 = 2 * 2 * 3 * 5 48 = 2 * 2 * 3 * 2 * 2 The squares can be 2 by 2, 3 by 3 or 4 by 4. Which gives the "least number"?
January 19, 2015

7th grade math
-6r - 8 = -6r - 8 agree. 14 + 8w = 32 + 8w 14 = 32 Agree.
January 19, 2015

Math
12m +12 = 18m + 18 Subtract 12m and 18 from both sides of the equation. -6 = 6m -1 = m
January 19, 2015

alegebra1
V= lwh/3 = (base^2h)/3 Insert values and solve.
January 19, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "continental drift theory evidence" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=continental+drift+theory+evidence&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the...
January 19, 2015

algebra
70 - 40 = 30 50 - 40 = 10
January 18, 2015

Health/Brain Tumors
It will depend on how large the tumor is and where it is.
January 18, 2015

Statistics
Either A or B could be used, but the histogram would be easier to analyze.
January 18, 2015

Math
"hire" = entire? .75($500 + 22*$250) = ?
January 17, 2015

statistics
Probability is not a percentage. Change format to decimal. Either-or probabilities are found by adding the individual probabilities. General = (100-30-49-13)/100 = ? Not computer = (100-30)/100 = ? If the events are independent, the probability of both/all events occurring is ...
January 16, 2015

add more plz
What methods will you use to "fight for civil rights"? Also, you mention your responsibilities but do not discuss you rights. Possibly this might help: http://drdavespsychologypage.homestead.com/Assertive_Rights.pdf
January 16, 2015

science
Since this is not my area of expertise, I searched Google under the key words "arguments against extending human life" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=arguments+against+extending+human+life&ie=UTF-8&oe=UTF-8&gws_rd=...
January 16, 2015

MATH
L = W + 13 2L + 2W = 8*12 (converting to inches) Substitute W+13 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.
January 16, 2015

maths
Pythagorean theorem. s^2 + s^2 = 2s^2 = 18^2 Solve for s.
January 16, 2015

math progression needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
January 16, 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.
January 16, 2015

Math
x + 8
January 16, 2015

Math
R = 1/3B G = 5B R + G + B = 508.26 Substitute 1/3B for R and 5B for G in the second equation and solve for B.
January 16, 2015

math(5th grade)
16 teams need to play 8 games in the first round, leaving 8. 8 + 4 + 2 + 1 = ?
January 16, 2015

science
What is your question?
January 15, 2015

How concepts develops
Agree.
January 15, 2015

Help with math
5% + 30% = 10% + 25% and so on. 7 * 5%
January 15, 2015

Math
Just add 9 to both sides.
January 15, 2015

Math
No answer given. Just divide both sides by .6.
January 15, 2015

Math
.6x = 36 Solve for x.
January 15, 2015

science
Since this is not my area of expertise, I searched Google under the key words "types of pollution in water" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=types+of+pollution+in+water&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
January 15, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "igneous rocks" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=igneous+rocks&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information ...
January 15, 2015

Science
I would agree.
January 15, 2015

Science HELP!!!
Since this is not my area of expertise, I searched Google under the key words "injecting genes into an organism" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=injecting+genes+into+an+organism&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
January 15, 2015

Biology
Are they not animals?
January 15, 2015

child psychology #1
Although historically psychologists did not prescribe drugs, there is currently a movement to allow psychologists, with specific training, to do so.
January 14, 2015

Health part 2
https://www.google.com/search?client=safari&rls=en&q=exocrine+glands+definition&ie=UTF-8&oe=UTF-8&gws_rd=ssl
January 14, 2015

Science
It doesn't matter what changes I would make; the question is asking what genetic changes you would make.
January 14, 2015

Genetics
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 14, 2015

Genetics
The man's genotype = XhY The woman's genotype = XhX Use the Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square+calculator&ie=UTF-8&oe=UTF-8&gws_rd=ssl A carrier does not experience symptoms in the phenotype.
January 14, 2015

math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 9.1*10^8 - 9.3*10^7 = 91*10^7 - 9.3*10^7 = (91-9.3)*10^7 = ?
January 14, 2015

Algebra 1?
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Do you mean (-3x^3y^2)(5xy^-1) or (-3x^3y^2)(5xy)^-1 ???
January 14, 2015

Health
I would agree.
January 14, 2015

Biology
What genes are recessive and what ones are dominant?
January 14, 2015

algebra
W = 8S + 53 W + S = 1034 Substitute 8S+53 for W in the second equation and calculate S. Then use first equation to find W. Check by putting both values into the second equation.
January 13, 2015

Psychology
Why would the researcher have to explain anything? Why do the providers need to know they are participating in an experiment? Have video cameras record interactions for specific situations. Have third party observers rate the interactions according to the specified criteria ...
January 13, 2015

algebra
A = 3J + 2 A - J = 26 Substitute 3J+2 for A in the second equation and solve for J. Then put J value in the first equation to solve for A. Check by putting both values into the second equation.
January 13, 2015

math
P(red, blue) = 6/20 * 2/19 = 12/380 =3/95 P(blue, Yellow) = 2/20 * 3/19 = 6/380 = 3/190 I only checked two, but if you did the same process and your math is correct, they should all be right.
January 13, 2015

Math
20/12 = x/8 Solve for x.
January 13, 2015

Math
E = 2H - 13 E + H = 23 Substitute 2H-13 for E in the second equation and solve for H. Put that value in the first equation and solve for E. Subtract H from E.
January 13, 2015

math
The probability of any color = 1/6. A. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. B. Either-or probabilities are found by adding the individual probabilities.
January 13, 2015

algebra
Add 8x to both sides of first equation. y = 18 + 8x 9x + 13y = 8 Substitute 18+8x for y in the second equation and solve for x. Insert that value into the first equation to solve for y. Check by putting both values into the second equation.
January 13, 2015

Math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1. YES. 2*6^2 - 26/2 = 59 2. NO. 1/3(x-9) = 2x - 7 Multiply both sides by 3. x - 9 = 6x -...
January 13, 2015

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