# 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.