# Posts by PsyDAG

Total # Posts: 23,418

science (?)
What is "i"?

Statistics
Need to know standard deviation (SD). 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 for the Z score. Multiply by 1000.

Probability
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(bb) = 1/4 * 1/2 P(Aw/h) = 1/4 * 1/2 Either-or probabilities are found by adding the individual probabilities.

science
Light does not go through the iris.

math
It would help if you proofread your questions before you posted them. What is "1-3"?

Probability :(
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.

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

science (?)
What subsystems do you mean?

Psychology
http://www.simplypsychology.org/cognitive-dissonance.html

Math(AssignmentDueToday)
If Mail is almost a meter, would the scaled down version be larger? x = 38.2/19100 = ?

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.

Math
diameter = 2r 30/7 = 4 50/7 = 7 Area used = 28 * πr^2 = ? Subtract ? from 50*30 for waste

Math
No diagram. Cannot copy and paste here. Assuming the wall is 10 feet high: 12(10 - 2.75) - 36/2 = ? inches That is extremely low to hang a picture. Usually they are hung at close to eye level.

psychology
The reduction of tension and anxiety is immediate and negative.

Abnormal 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.

biology
I know blue eyes are recessive to brown, but I have no idea about the dominance/recessive relationship for straight/curly, dark/red hair.

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...

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
10 + 19 = 29

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.

Algebra
Cannot graph on these posts.

Math
Cannot graph on these posts.

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.

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

math
Ten thousands

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

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?

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

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?

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

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

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?

Statistics
SEm = SD/√n Variance = SD^2

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

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

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

math
thousanths

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

Biology
23 pair before and after

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 ...

Algebra
Boarding rate + miles(mileage rate) = Total cost

The mind at work (?)
What are your choices? Incentive? Encouragement?

algebra (oops)
I read square root. x^2 + 3x = 10 x^2 + 3x - 10 = 0 Factor.

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

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) = ?

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

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

math
78,654

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.

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.

math
agree

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

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

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

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

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

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

maths
Assuming it is a progression, I agree.

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" ...

communication

math
How much time is spent on each job?

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 (&...

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.

Maths (?)

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

Maths (?)
More data needed.

geometry (?)
Not geometry. What is your q1uestion?

geometry (?)
No following shown. Cannot copy and paste here.

Math
Don't understand the second equation.

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

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

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
1. +2 2. -9

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

Stats
n*p = 30 * .34 = ?

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

math.
3 * 39 * 10 = ?

Psychology
I would say classical experiments.

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...

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

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

algebra

math
12:14

1 - 1/4 = ?

Math (?)
No diagram. Cannot copy and paste here.

math
Nearest foot is 2.

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

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

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.

English
3 and 7 are incorrect.

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

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 ...

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?

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

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&...

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?

science (?)
Lack data.

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

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

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

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