# Posts by PsyDAG

Total # Posts: 23,471

**Math**

800 = π (r^2) h Decide on either the height or radius and solve for the other.

**Math**

What is your question?

**English**

I'll point out problems, and let you correct them. Better to use left and right rather than "westward" or "eastward," since you don't know what direction the person is facing. Toward which armpit? Does the person ever return to original standing ...

**Chemistry needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

**Probability**

P(1 or 4 or 5 or 6) Either-or probabilities are found by adding the individual probabilities. That is how Ms Sue got the answer.

**Probability**

If "circle is yellow," there is no probability of getting a red number.

**algebra**

What are your choices? It would be essentially a straight line going from lower left to upper right.

**math**

Cannot make probability tree on these posts.

**Pre alg**

disagree, what is "-2x+5x"?

**Literature (?)**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. What book/story does this relate to?

**Chemistry needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

**my son's math help please**

It doesn't matter how many slices. 2/3 of a cake is larger than 1/3 of a same-sized cake.

**English**

Don't know the story, but Holmes is noted for his careful and scientific solutions.

**Math**

5280 * .2 = ?

**Maths**

It would help if you proofread your questions before you posted them. From your data, it could be 863, 881, 845, 827 or 809.

**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 "...

**Math**

Average = mean = sum of scores/number of scores I'll let you do the calculations.

**ALGEBRA**

It would help if you proofread your questions before you posted them. Where did you get 3/11? From your data, I would get 1/5(letters) * 1/2(coin) = 1/10

**pre algebra**

agree

**algebra (?)**

We cannot see the histograms. You cannot copy and paste here.

**Geometry**

Circumference = 2πr

**algebra**

10.5x = 7.5x + 30 Solve for x, then insert into one of the two equations to find y.

**math**

1. disagree, when dividing, exponents are subtracted. 2. disagree, when dividing, exponents are subtracted. 3. disagree, what is 4^-2? 4. disagree, anything to the Zero power = 1.

**math**

What are your answers? 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. When multiplying/dividing, exponents are added/subtracted respectively.

**Math**

Can get 7 with 4,3 or 3,4 or 5,2 or 2,5 or 6,1 or 1,6 out of 36 possibilities = 6/36 Use the same logic for above or below 7.

**Math**

7.5 gallons/cubic foot Convert to feet. V = 18 * 8 * 12 = 1.5 * 2/3 * ! = ?

**Maths**

M = 3D M+5 = 2.5(D+5) Substitute 3D for M in the second equation and solve for D. Insert that value into the first equation to solve for M. Check by putting both values into the second equation.

**Math**

8/44 = ?

**Math**

5/12x = 25 Solve for x. Subtract 25 from x. He will not have any chickens after 3 months.

**science (?)**

What plants? Biological categories? https://www.google.com/search?client=safari&rls=en&q=plant+classification+chart&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=4y5DV43PBOSD8QfJ8YbYBg

**Math (?)**

No figures. Cannot copy and paste here.

**Math**

Or you could try it this way. P-4 = A 6A = 4P Substitute P-4 for A in the second equation and solve for P. However, something seems askew here. Typos?

**Math**

6A = 4P A = 4/6P = 1/3P P = A + 4 Substitute P/3 for A in the third equation and solve for P.

**math**

N = 6E

**maths**

Cannot graph here.

**Science**

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

**Biology**

What are your answers? 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**

1543 = 16t^2 Divide both sides by 16 and then get square root.

**Math**

To get product (one negative) of -36, can have 18,2 or 9,4 or 3,12. 12 - (-3) = 15

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a. 1/3 * 1/3 = ? b. increase, 1/2 * 1/2 = ?

**math**

36,336 and 63,363

**Physics needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

**math**

D = L - 28 1/3L = 4/5D Substitute L-28 for D in the second equation and solve for L.

**Math**

I didn't even know there were "12th grade admission exams" when I was teaching. The content is likely to vary with the school district.

**Statistics**

Z = (score-mean)/SD A,B. 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. Multiply by 100. C. Use same table to find Z for .02. Insert in above equation...

**find the number**

What is your answer? 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.

**Algebra**

I will not even get into the math. It would help if you proofread your questions before you posted them. First, you say "summarize it in one-two paragraphs," but you have four. "each country’s payroll" More than one country? Your lack of comma use is ...

**Business Communication**

Are company databases external?

**Business Communication**

Even with the errors in capitalization and punctuation, I find it readable, a. However, I agree with Writeacher that your need to avoid developing sloppy habits for business communications.

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1. What is x*x? 2. What is -3m*8? 3. Agree. 4. What is 5b*6B? 5b*10?

**math**

1. Disagree. 2. disagree. 3. disagree. 4. disagree.

**Math (?)**

No picture. You cannot copy and paste here.

**Algebra(?)**

Need more data. Typos? ABCD?

**Pre algebra**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/2 * 1/6 = ?

**Geometry**

Pythagorean Theorem a^2 + b^2 = L^2 24^2 + 10^2 = L^2

**Math/ Ratios (oooops)**

I'm sorry. That was past tense, "did." If so, add A and H.

**Math/ Ratios**

A = H (A-23)/(H-7) = 3/4 Substitute H for A in the second equation and solve for H. Insert that value into the first equation to solve for A. Add (A-23) and (H-7).

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 2*2*2 ≠ 12 However, unless you have more typos, I get 5 too.

**atlantic high**

Pythagorean Theorem a^2 + b^2 = c^2 a^2 + 4^2 = 8.5^2 Solve for a.

**Math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 4(2/4) = 2 2*4 = ?

**MAth**

Add 3.6 to both sides and divide by .9 to solve for x.

**science**

What are your choices? Digest? Eat? Consume?

**math**

1.06x = 42.40 I get 40 too.

**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.

**statistics (?)**

What does X stand for? If x is a score: Z = (score-mean)/SD

**Math**

P = 2L + 2W

**Physical Education: Just checkin' if they're right**

Free style? Agree with 300.

**maths**

C = 2πr = 2*3.14*(30/2) (C * 33.3)/100 = m traveled

**Math**

R = 25 - W 10R - 2W = 202 Substitute 25-W for R in the second equation and solve for W. Insert that value into the first equation to solve for R. Check by putting both values into the second equation.

**Math (check my work)**

Complementary means they add up to 90 degrees. (x+13) + (2x+23) = 90

**MATH PLZ HELP**

7. Disagree. 8. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 4/10 * 2/10 = ? 9. Correct 10. P(heads) = 1/2 P(<5) = P(4 or 3 or 2 or 1) Either-or probabilities are found ...

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. assuming you want price per gallon: 10.75 * 12/128 = 1.008 gallon = $15.65, but $15.53 is the closest.

**math**

Either-or probabilities are found by adding the individual probabilities. P(<4) = P(3 or 2 or 1) = 1/6 + 1/6 + 1/6 = ?

**Stuck in a Question**

Does the definition sound uncertain? Critical?

**algebra II**

Q = 120 - D .25Q + .10D = 19.05 Substitute 120-D for Q in the second equation and solve for D. Insert that value into the first equation to solve for Q. Check by putting both values into the second equation.

**Languge arts (?)**

What is a "tang town"?

**math !**

Welcome

**math !**

1) 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. 2) not an inequality. 60/15 = 4 3) anything < 14 ...

**math**

75/1.5 = 50 mph 325/50 = ?

**geometry**

the first two are correct, but I can't answer the following because the figures are not given.

**Artificial Intelligence**

If B is pardoned, either A or C will be executed, 1 out of 2.

**Science (?)**

What are your choices? Minerals?

**math**

It would help if you proofread your questions before you posted them. "1 cm : 0.5 cm"?

**Language arts**

No need to correct.

**Math (?)**

No diagram.

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Received placebo (1-.80) = .20 Showed improvement (1-.62) = .38

**maths geometry (?)**

No angle shown. Cannot copy and paste here.

**Math**

How can you "toss three coins and get one head and one tail"?

**math**

Cannot graph here. I will use substitution. l = k + 150 l + k = 900 Substitute k+150 for l in the second equation and solve for k. Insert that value into the first equation to solve for l. Check by putting both values into the second equation.

**Math**

V (round) = π(r^2)h V Rectangular = 6*9*2 A (round-bottom) = 2πrh + πr^2 A (rect.-bottom) = 6*9 + 2*2*9 + 2*2*6

**Spanish**

1. right 2. wrong 3. right 4. wrong 5. right 6. wrong 7. DK 8. DK 9. right

**Math**

V = π(r^2)h *3 = ?

**math**

To compare more easily, change to decimals. 1/4, 1/3, 2/3, 5/7 = .25, .33, .67, .71

**math (?)**

What is the original distribution?

**math for IT(?)**

Need data. What is the distribution?

**Math (Anon.)**

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. Second, there are no figures. You cannot copy and paste here.

**Math**

S = E 2S = 2E = E - 4 + 40

**Math(?)**

No table. Cannot copy and paste here.

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.18) and its Z score. Z = (score-mean)/SD

**biology**

Use a Punnett Square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl