Posts by PsyDAG

Total # Posts: 24,053

math
Square root is a number, when multiplied by itself, gives your that number, e.g., 2*2 = 4, 3*3 = 9. Find the square roots of the numbers on either side of the number to estimate the square root of the number,e.g., ?6 = approximately 2.5. Also there are tables to give you ...

crime (?)
No situation posted. Cannot copy and paste here.

statistics
Simple random = just pick students by chance who have taken the course. Stratified = pick students by chance for each grade level achieved in the course.

statistics
A. all children B. 100 children C.https://www.google.com/search?client=safari&rls=en&q=observational+experimental+study+difference&ie=UTF-8&oe=UTF-8 Don't just copy the material. Express the ideas in your own words. Although this will take more time and effort, you will ...

Statistics
It indicates is that the variability is greater in Omega's class. If you are an "A" student, you need 90% to score at the 97.5 percentile in Alpha's class, while you would need 100% to score at the 97.5 percentile for Omega.

Statistics
1) 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 2) Find the mean first = sum of scores/number of scores Subtract each of ...

Maths
100 - 100 = 0 How did you get 102 left after spending "all"?

Algebra 1
Sorry that I omitted 2. However, that would bring it to 24/36 = 12/18 = 2/3. If we omitted another two, like 1,5 and 5,1, it would be 26/36 = 13/18.

Algebra 1
Sorry that I omitted 2. However, that would bring it to 24/36 = 12/18 = 2/3. If we omitted another two, it would be 26/36 = 13/18.

Algebra 1
Rolls >5. 2,4 4,2 2,5 5,2 2,6 6,2 3,3 3,4 4,3 3,5 5,3 3,6 6,3 4,4 4,5 4,6 6,4 5,4 5,5 5,6 6,5 6,6 Are all the possibilities included? 22/36 = ?

Algebra
Welcome

Algebra
C = 3M C - M = 12 Substitute 3M for C in the second equation and solve for M. Insert that value into the first equation to solve for C. Check by putting both values into the second equation.

Math
See second post.

science
I would say all of above.

Math
Why the gap in the numbers? If you are missing a decimal point, insert it into the equation. 42/8 = x + 15/8 Solve for x.

Math (Sarah)(?)
First, do your own post rather than adding on to another. Second, you have insufficient data.

Math
W = 2R + 3 R + W = 75 Substitute 2R+3 for W in the second equation and solve for R. Insert that value into the first equation to solve for W.

math
College = male 45/5495, female 41/4569 Assuming pro players are only recruited from college: Pro = male 44/4500 female 32/4100

Math(?)
Where did you get your data?

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

Algebra
3.6*10^7/3*10^8 = 3.6/30 = ?

Math
1. What shaded area? 2. Cannot post a grid. 3. divide 19 by 25.

Science
https://www.google.com/search?client=safari&rls=en&q=sexual+reproduction&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/. http://www....

Algebra 2
Closest to a square is largest area. 2000/3 = ?

Algebra 2
If 6 is 3 times 2, the y is 3 times -4.

Math
Here is one method. Let x = starting $. x - 33 - 15 + 20 = 21 Solve for x.

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

Science
agree

Math
from Google: In a room of just 23 people there's a 50-50 chance of two people having the same birthday. In a room of 75 there's a 99.9% chance of two people matching. Put down the calculator and pitchfork, I don't speak heresy. The birthday paradox is strange, ...

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. Second, we do not have access to your database. Third, we would respond to a few questions/...

Biology A1
That's what bobpursley indicated.

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

Math
Assuming equal probability along the contiuum: a. (180-90)/(260-60) = ? Use same process for other problems.

Math (?)
Need more data. How much time does the plan allow each month?

Discrete Mathematics
Typo? If 2 are chosen from 5 defective bulbs, all would be defective.

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. However, I will start you out. Find the mean first = sum of scores/number of scores Subtract...

Science
Since this is not my area of expertise, I searched Google under the key words "constructivism vs scientific approach" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=constructivism+vs+scientific+approach&ie=UTF-8&oe=UTF-8 In the ...

Math
No stem-and-leaf plot. Cannot copy and paste here.

geometry needs help
Post the subject in the desired area.

Science
If the woman does not even carry the disease, there are no disease genes to pass down to either boys or girls. If the man's gene is x-linked (recessive or dominant), it can only be passed to his girls.

Science
Since this is not my area of expertise, I searched Google under the key words "functions of organelles" to get these possible sources: https://www.google.com/search?client=safari&rls=en&ei=Pfd8WqScL9iAjwPC-pP4Dg&q=functions+of+organelles&oq=functions+of+organelles&...

Science
Are you sure it isn't centrifugal force?

Algebra
x+8 + x = 90 Solve for x, then x+8.

Algebra
There are currently 20 boys. 20 + x = (80+x)/3 Solve for x.

Statistics
Cannot graph on these posts.

Stats 2
Here is a beginning: 1. Z = (score-mean)/SD = (78695-74914)/14530 Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of that Z score. 2. Find the mean first = sum of scores/number...

Stats
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. Disagree with V(c).

Medical Ethics (Ooops)
Sorry, I searched under "privileged information."

Medical Ethics
I searched Google under the key words "unsaturated alkenes" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=privileged+information&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly, if you use ...

Medical Ethics
B. What about euthanasia without the person's consent or against the person's will? Who decides, and under what conditions, to "pull the plug"?

science
I searched Google under the key words "opponent process colors" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=opponent+process+colors&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly, if you ...

Psy
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. I will do the first problem for you. IV = what they are...

HELP Science
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.

math
14V + 7

math - statistics
What is your hypothesis? Here is a start: If it is that supermarket brands are cheaper than market brands (assuming that the products are equivalent): Ho: M = S Ha: M > S

English
Agree, but There IS only one girl in the classroom.

English
agree with all However, if "Uncle Harold" is his designation, I would go with the other choice.

AP Bio
Since this is not my area of expertise, I searched Google under the key words "translocation/transpiration in plants" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=translocation/transpiration+in+plants&ie=UTF-8&oe=UTF-8 In the ...

Science Help(?)
What substance? What starting temperature?

Science
mixture

Science
It can be done either way.

science
moist mid-latitude with severe winters

science(?)
What is your question?

GRADE 12 APPLIED 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.

Math
Agree with 1, 4 & 5. Disagree with 2 and 3.

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

Algebra
Let x = number of floors 20 - 8 + 7 = .5x Solve for x.

Algerbra
B = 2F + 5 12F + 15B = 1335 In the second equation, substitute 2F+5 for B and solve for F.

5th grade science
Since this is not my area of expertise, I searched Google under the key words "tides" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=tides&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly, if ...

Math
N = 72 - D 10D + 5N = 4.95 Substitute 72-D for N in the second equation. 10D + 5(72-D) = 4.95 Solve for D, then put value in the first equation to find N.

algebra
x + (x+24) = 90 Solve for x, then x+24.

algebra
3S + 2L = 24.40 4S + 5L = 47.70 Multiply the first equation by 5 and the second by 2. 15S + 10L = 122 8S + 10L = 95.40 Subtract the second equation from the first. 7S = 26.60 Divide both sides by 7.

Science.... PLEASE HELP :(((
a new element was found that did not fit?

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

Science
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. However, to start you out, haven't you heard of solar energy in use for houses?

Math
agree

Science
The artery is relatively close to the surface of the skin.

Math
Use Pythagorean theorem. Let x = other leg 9^2 + x^2 = 12^2 Solve for x.

English
The subject of an active voice sentence performs the action of the verb: “I throw the ball.” The subject of a passive voice sentence is still the main character of the sentence, but something else performs the action: “The ball is thrown by me. Agree with all ...

Math (?)
What is "it"? Cannot copy and paste here.

Science
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. However, first you need a stopwatch. I'll let you take it from there.

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

Statistics and Probability
Cannot do tables or histograms here. c. This is the probability of picking either 2 or 3 red marbles. P(2) = 4/9 * 3/8 * 5/7 P(3) = 4/9 * 3/8 * 2/7 Either-or probabilities are found by adding the individual probabilities.

Science
It would depend on how far the digestive process had gone.

statistics
If the inspector is looking for indications that the parachute might not open: Ho: will not open Ha: will open

Algebra 1 A
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. Although you indicate the sale prices, there is no indication of the costs of production. We...

statistics
Not sure what you are asking. Z scores of 2.58 leave .49% of scores at either end.

Math
14! = 14 factorial = 8.717829*10^10 = 87,178,290,000 I'll let you do the division to get the remainder.

Science
anus or cloaca

Math
Combine like terms. 5x^2y + 3x^2 + 6y

Math
"Twice as many" means John made 1268 more. 1268/2 = ?

Math
Welcome

Math
Express a fraction with a slash (/) on the same key as "?", e.g., 3/4. 12 * 3/4 = 12 * .75 12 * .75 * $3.50 = ?

Math
one pint = two cups. The "measuring cup" should have indicators for levels of one and two pints.

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

Math
https://www.google.com/search?client=safari&rls=en&q=correlation+coefficient&ie=UTF-8&oe=UTF-8

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

algebra 1
.4x - 17.7 = -2.5x + 20 Combining terms. 2.9x = 37.7 Solve for x, then y.

Math
7. 9 * 4 = 36 36 + 2 = 38 10. 25 + 20x > 245

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.

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