# Posts by PsyDAG

Total # Posts: 23,205

**stats**

The probability of getting any one question right = 1/6. "at least 4 of the 6" means 4, 5 or 6 correct. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(4) = 1/6^4...

*June 27, 2016*

**Physics needs help**

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

*June 25, 2016*

**Math**

10 + 19 = 29

*June 25, 2016*

**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.

*June 25, 2016*

**Algebra**

Cannot graph on these posts.

*June 24, 2016*

**Math**

Cannot graph on these posts.

*June 24, 2016*

**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.

*June 24, 2016*

**Psychological Stats**

No need to play, just insert data and solve. Z = (score-mean)/SD

*June 23, 2016*

**math**

Ten thousands

*June 22, 2016*

**Math (?)**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. What is your question?

*June 22, 2016*

**math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. x^2 - 6x + 9 = 64 x^2 - 6x - 55 = 0 Factor. What factors of -55 will add to give you -6?

*June 22, 2016*

**maths (?)**

It would help if you proofread your questions before you posted them. What is a "lakhs place"?

*June 22, 2016*

**English**

1, 2. Can indicates ability, while may indicates permission. 3 is awkward. 4, 5. You can feel better without actually being better. Symptoms may temporarily vanish. 7. Typical?

*June 22, 2016*

**English**

#2 infers that you don't look great without your uniform.

*June 22, 2016*

**math**

Smallest = 123,456,789.0 Largest = 9,876,543,210

*June 22, 2016*

**math (?)**

Cannot be done only knowing that 5 points are awarded for each correct answer. Score would be a multiple of 5. What information is missing?

*June 22, 2016*

**Statistics**

SEm = SD/√n Variance = SD^2

*June 22, 2016*

**math**

MEAN = ∑X/n = (7.75 + 6.30 + 6.30 + 7.00)/5 = ?

*June 21, 2016*

**Math Geometry (?)**

It would help if you proofread your questions before you posted them. "and and are"?

*June 21, 2016*

**math**

It would help if you proofread your questions before you posted them. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Do you mean 25-x^2 = 4x In that case, x^2 + 4x - 25 = 0

*June 21, 2016*

**math**

thousanths

*June 21, 2016*

**Math (?)**

It would help if you proofread your questions before you posted them. "hire purchase the...."?

*June 20, 2016*

**Biology**

23 pair before and after

*June 20, 2016*

**Math(Please Help Me, Assignment Due)**

B) Find the mean first = 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 scores to get variance. Standard deviation = square root of variance Z = (score-mean)/SD ...

*June 20, 2016*

**Algebra**

Boarding rate + miles(mileage rate) = Total cost

*June 19, 2016*

**The mind at work (?)**

What are your choices? Incentive? Encouragement?

*June 19, 2016*

**algebra (oops)**

I read square root. x^2 + 3x = 10 x^2 + 3x - 10 = 0 Factor.

*June 19, 2016*

**algebra**

Assuming the number is the same for multiple and square root: 3x + √x = 10 Solve for x.

*June 19, 2016*

**Maths**

The square lawn is 12 by 12, assuming that the path is not part of the lawn. With the path, the side is 12 + 2(1.5) = ?

*June 19, 2016*

**algebra**

B = 2H 25 = .5HB Substitute 2H for B in the second equation and solve for H.

*June 19, 2016*

**algebra**

L = W + 3 2L + 2W = 34 Substitute W+3 for L in the second equation and solve for W.

*June 19, 2016*

**math**

78,654

*June 19, 2016*

**algebra**

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.

*June 19, 2016*

**maths**

Is this what you are being asked to do? 64 = 64 63.6 = 64 50.3 = 49 18.7 = 16 You do the rest.

*June 19, 2016*

**math**

agree

*June 17, 2016*

**statistics**

That you are 95% sure that the true mean lies between those limits.

*June 17, 2016*

**math**

2/3x = 2.24 Solve for x then divide by 4.

*June 17, 2016*

**Management Science**

5 hours, A = $50, B = .15 * 5 * 60 9 hours, A = 50 + .25*60, B .15 * 9 * 60

*June 17, 2016*

**Math**

F = 62 - S F - 15 = 7(S-15) Substitute 62-S for F in the second equation and solve for S.

*June 17, 2016*

**math (?)**

Approximation of what? What following? Cannot copy and paste here.

*June 17, 2016*

**maths(?)**

It would help if you proofread your questions before you posted them. "Crore?" thirteen thousand nine hundred forty eight = 13,948

*June 17, 2016*

**maths**

Assuming it is a progression, I agree.

*June 16, 2016*

**MATH**

First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. It would help if you proofread your questions before you posted them. Don't know what "FO," "VO" and "BA" ...

*June 16, 2016*

**communication**

Do others make comments about you to you? If so, do you agree with those comments?

*June 16, 2016*

**math**

How much time is spent on each job?

*June 16, 2016*

**statistics**

What is the list of numbers measuring? Depth? For shell length, 99% = sample mean ± Z (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 (&...

*June 16, 2016*

**statistics**

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. Multiply by 100.

*June 16, 2016*

**Maths (?)**

What is your question?

*June 16, 2016*

**Math**

Could be any one of several, starting with 4489, 3368, 2247.... Do you have more data?

*June 16, 2016*

**Maths (?)**

More data needed.

*June 16, 2016*

**geometry (?)**

Not geometry. What is your q1uestion?

*June 15, 2016*

**geometry (?)**

No following shown. Cannot copy and paste here.

*June 15, 2016*

**Math**

Don't understand the second equation.

*June 15, 2016*

**Math**

A. Tires = cars * 4 b. Minutes = days * 24 * 60

*June 15, 2016*

**Algebra**

2008-1998 = ? Substitute that for x and solve.

*June 15, 2016*

**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.

*June 15, 2016*

**Math**

1. +2 2. -9

*June 14, 2016*

**English**

1, 2, 3, 4. Yes "Was" better than "is," because planning was done previously.

*June 13, 2016*

**Stats**

n*p = 30 * .34 = ?

*June 13, 2016*

**Science**

If they have landed, zero. If not, .98m.

*June 12, 2016*

**math.**

3 * 39 * 10 = ?

*June 12, 2016*

**Psychology**

I would say classical experiments.

*June 11, 2016*

**Science**

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

*June 11, 2016*

**math**

Mean = ∑x/n (80+85+82+x)/4 ≥ 85 Solve for x.

*June 11, 2016*

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. (a+b)^2 = a^2 + 2ab + b^2

*June 11, 2016*

**algebra**

How would you like us to help you?

*June 9, 2016*

**math**

12:14

*June 9, 2016*

**Math Makes Sense Grade 3**

1 - 1/4 = ?

*June 8, 2016*

**Math (?)**

No diagram. Cannot copy and paste here.

*June 8, 2016*

**math**

Nearest foot is 2.

*June 8, 2016*

**Business Mathematics**

How many tolls have to be paid? Assuming one toll: y = $2 + .80r Substitute 17 for r and solve.

*June 7, 2016*

**MATH**

Let x = total distance x - 1/3x - 2/5x = 1,200m Solve for x.

*June 7, 2016*

**Advanced Algebra**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.025) and its Z score. 95% = mean ± Z (SD) Consider only positive value.

*June 6, 2016*

**English**

3 and 7 are incorrect.

*June 6, 2016*

**algebra**

Cannot draw graphs on these posts. b. 8 *.85 = ? c. 8 * 1.20 = ? d. compare 4.00/.85 to 4.00/1,20

*June 6, 2016*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(3) = (5/12)^3 P(1of3) = (5/12)(7/12)^2 e) At least one = one, two or three Either-or probabilities are found by adding the ...

*June 6, 2016*

**Math**

Either-or probabilities are found by adding the individual probabilities. P(A or B)= P(A) + P(B) = .03 + P(B) = .07 P(B) = .04 Typos?

*June 5, 2016*

**math**

10 liters = 1 cubic centimeter 80*60*50 = ? cubic centimenters

*June 5, 2016*

**maths**

Since this is not my area of expertise, I searched Google under the key words "How to draw functions in same set of axes" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+to+draw+functions+in+same+set+of+axes&ie=UTF-8&oe=UTF-8&...

*June 5, 2016*

**MATH (?)**

First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. Between the chord and what?

*June 5, 2016*

**science (?)**

Lack data.

*June 4, 2016*

**statistics**

Z = (score-mean)/SD Use the Z table.

*June 3, 2016*

**Algebra**

Why do YOU think this? Might it be helpful in your later life?

*June 3, 2016*

**math**

The current value is $200. The cumulative value = $200 * 15 * 12

*June 3, 2016*

**Science**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 4MV = 4*MV

*June 3, 2016*

**Mathematics (?)**

No picture. Ramp of 97.4 degrees is almost right angle. Typo?

*June 2, 2016*

**algebra 1**

agree

*June 2, 2016*

**Algebra**

Can a picture frame be -20?

*June 2, 2016*

**Vocabulary**

Disagree

*June 2, 2016*

**Vocabulary**

agree

*June 2, 2016*

**CHECK my answers for DRIVERS ED**

1, 2, 3, 4, 5, 9. agree 6. what is your answer? 7, 8. DK

*June 1, 2016*

**math**

Either-or probabilities are found by adding the individual probabilities.

*June 1, 2016*

**maths (?)**

Do you mean X^3 = 36.13 * 10^-24?

*June 1, 2016*

**Math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Second step x4/36 = (2/3)/36

*June 1, 2016*

**math (?)**

lack data

*June 1, 2016*

**Math**

8 for $5 = 4 for $2.50 That is 100% profit on those 4 oranges, assuming that the other 4 oranges are not just thrown in the garbage.

*June 1, 2016*

**Maths**

L = 2W+3 2L + 2W = 150 Substitute 2W+3 for L in the second equation and solve for W.

*May 31, 2016*

**math**

48 hours = 2 days What is Ro?

*May 31, 2016*

**math**

If inversely proportional, if x is increased by 50%, y should decrease by 50%.

*May 31, 2016*

**Math**

State you specific problem(s) and we will do our best to help.

*May 31, 2016*