Saturday
December 3, 2016

Posts by PsyDAG

Total # Posts: 22,740

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 between the two Z scores. Multiply by 100 to get the percentage.
February 6, 2016

Verbal reasoning
Not knowing what you want to relate to fly, I would pick rapid vs. slow.
February 6, 2016

algebra
Reiny is right. I goofed. Mia Culpa.
February 6, 2016

algebra
P.S. Making a mistake does not mean you are dumb. We all make mistakes. However, if you keep making the same mistake, then you might be dumb.
February 6, 2016

algebra
Let d = # dimes and n = # nickels. d = 2n 10d + 5n = 195 Substitute 2n for d in the second equation and solve for n. Insert that value into the first equation to solve for d. Check by putting both values into the second equation.
February 6, 2016

maths
Revolution = one circumference C = πd cm = 1/100m Km = 1000m Can you put those together to solve the problem?
February 6, 2016

Algebra
The Y-intercept is where the lines pass through the Y axis.
February 6, 2016

math
F = 4J (F+22) = 2(J+22) Substitute 4J for F in the second equation and solve for F. Insert that value into the first equation to solve for J. Check by putting both values into the second equation.
February 6, 2016

statistics
Need data. What is the mean and Standard deviation for weight of newborns?
February 6, 2016

math
Ray paid $K for 1/2 hour Bill needs to pay for 7(1/2 hour) Bill paid $K + 2.5(2/3K)
February 6, 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 of the Z score. Multiply by 600.
February 5, 2016

Statistics
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a. .25 * .25 * .75 = ? b. .75^3 = ? I'll leave c and d for you.
February 5, 2016

MATH
Assuming that a side is not a fraction of a length, the first square cannot use 17 lengths for a square perimeter.
February 5, 2016

math
1/2x = 3 Solve for x. Cannot draw or use strips here.
February 5, 2016

Mat
Assuming that you are talking about a cube, two sides would be 4 by 4, and 4 sides would be 4 by 2.
February 5, 2016

Statistics
Z = (score-mean)/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 of the Z score. How does it compare to .05?
February 4, 2016

Math (?)
Contradiction here. You originally say each crate "holds 10 vases."
February 4, 2016

math
Sum even = 2, 4, 6, 8, 10, 12 Mult. of 3 = 3, 6, 9, 12 Note that 6 and 12 fit both criteria. Either-or probabilities are found by adding the individual probabilities.
February 4, 2016

Basic 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 "...
February 4, 2016

Algebra
Do you know the 68-95-99.7 rule? Approximately 68% of scores in normal distribution are within one standard deviation (34% on each side of the mean), 95% within 2 SD, and 99.7% within 3 SD. ±3Z = (score-mean)/SD
February 4, 2016

Math
32 * 2.1^5 = 32 * 40.8 = 1307
February 4, 2016

Math
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. We cannot graph on these posts.
February 4, 2016

algebra
Let x = hours 10 + 5x = 40 + 3x Solve for x.
February 4, 2016

science
The individual tutors are not online all the time, so some questions may seem to take a relatively long time to get a response from someone with the specific expertise needed. Both factors typically increase as the depth decreases, allowing many marine creatures to survive.
February 4, 2016

setswana (?)
We are only able to respond to questions in English. Also, indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
February 4, 2016

math
(1-.2) * 924 = 739.20 (1+.2) * 924 = 1108.8
February 4, 2016

math
Need data. What is the height?
February 4, 2016

math
Especially if we are from different backgrounds, don't assume that we know what abbreviations mean. What are S.P. and C.P.?
February 4, 2016

math
Do you have a recipe available?
February 4, 2016

Science
Do you think the the tied end is completely leak proof?
February 4, 2016

math
4/10 4/10 * 40 I'll let you reason it out.
February 3, 2016

Statistics
Unless the curve is normal, the median and mean may not be the same and you cannot calculate the percentages with a Z score. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the ...
February 3, 2016

Statistics
That may be the notation, but it does not = married.
February 3, 2016

Math
The question is not how much greater, but "How many times greater." 3.05/6.10 = 50% greater
February 3, 2016

Bio
Need more data. What genes are dominant or recessive?
February 3, 2016

mathematics
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Is this what you mean? (4x^2)/3 + (5x^1)/3 - 6 Or do you mean this? 4x^(2/3) + 5x^(1/3) - 6 Or something else?
February 3, 2016

mathematics
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. See Later Post.
February 3, 2016

science
1. yes 2. no 3. yes 4. Even with internal fertilization, millions of sperm are released. Does that help?
February 3, 2016

maths
M = 2y (M-8) = 3(y-8) Substitute 2y for M in the second equation and solve for y.
February 3, 2016

math
let x = total students .4x = 972 Find x, then subtract 972 from that.
February 3, 2016

Math Ms. Sue writeteacher anyone plz help!!!
No, area = hb/2
February 3, 2016

science/maths
D = s * t D = 30(10) + 50(20) = ?
February 3, 2016

math
b = a-2 Area = ba/2 Substitute a-2 for b in the second equation and solve for a.
February 3, 2016

maths
What is your question? Also lacking data.
February 3, 2016

science
It would help if you proofread your questions before you posted them. "theaerasolto"?
February 3, 2016

Algebra
mean = ∑x/n 64 = (71+62+64+x)/4 Solve for x.
February 2, 2016

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.
February 2, 2016

math
P(colored) = 10/14
February 2, 2016

Algebra
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Tank = 2 * 3 * 4 = 24ft^3 Water = 2 * 3 * h = 20ft^3
February 2, 2016

Algebra
Income = .14x + 1300
February 2, 2016

maths
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.
February 2, 2016

math
P(purple) = 70/90 = ?
February 2, 2016

Science
Need more data. What kind of a "butt" are you referring to?
February 1, 2016

Math
I searched Google under the key words "linear vs. exponential" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=linear+vs.+exponential&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly...
February 1, 2016

Math
let x = number of tiles needed. 1/3 = 9/x x/6 = number of boxes
February 1, 2016

Math
It would help if you proofread your questions before you posted them. The information does not make sense as typed.
February 1, 2016

Statistics
87 is 1 SD below mean. 68% are ±1 SD, therefore 34% are below the mean, leaving 50% - 34% = 16% Here is another way to figure it out exactly. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution&...
February 1, 2016

Math
I assume the number you started with was 23.2. 2.32 + 1.16 = 3.48
February 1, 2016

science (?)
More data needed.
February 1, 2016

Geometry
1/9.52 = $/450 Solve for $.
February 1, 2016

Geometry
288/752 = H/564 Solve for H.
February 1, 2016

Geometry
To get 36, the ratio would need to be 4:8:10:14. What is x?
February 1, 2016

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (2/9)^3 = ?
February 1, 2016

activity
What are your choices?
February 1, 2016

activity
You cannot copy and paste here.
February 1, 2016

math-story prob
Let x = sq ft 79.50 + x = 2.50x Solve for x.
February 1, 2016

statistics
Z = (score-mean)/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 related to the Z score. Relate to level of significance you are using. Multiply ...
January 31, 2016

statistics, probability
Not necessarily true.
January 31, 2016

math
No choices. You cannot copy and paste here.
January 31, 2016

Quantitative methods
How many in each group? 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 ...
January 31, 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. However.... Since this is not my area of expertise, I searched Google under the key words &...
January 31, 2016

science
Please indicate answers with question. 1. The liquid part of the blood is called _____. (1 point) hemoglobin plasma*** platelets white blood cells 1. right 2. wrong 3. right 4. wrong 5. right 6. right 7. right 8. right 9. right
January 31, 2016

algebra
Hint: largest area would be a square.
January 31, 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.
January 31, 2016

tourism , geography, mathematical literacy, economics
Speak with your school counselor so that person can ask you specific questions to help answer your question.
January 31, 2016

Science
Since this is not my area of expertise, I searched Google under the key words "tongue temperature sensitivity" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=tongue+temperature+sensitivity&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
January 31, 2016

Technical drawing
What angle? What type of figure?
January 31, 2016

Science
What do you use to generate enough heat to melt either metal?
January 30, 2016

Science
agree.
January 30, 2016

statistics
Need standard deviation (SD) value. Z = (score-mean)/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 related to Z score.
January 30, 2016

Psychology
Agree with A, because person is dealing with the problem and is "problem-focused."
January 30, 2016

setswana
English please.
January 30, 2016

Sociology
We do not have access to the videos.
January 29, 2016

algebra
See previous post.
January 29, 2016

algebra
(n - 5)(n - 1) = n^2 - 6n + 5
January 29, 2016

poetry
What are the specific haiku? You cannot copy and paste here.
January 29, 2016

Math
I assume "reaping" means fencing. Let x = fencing in meters 27.5x = 55,000 45x/100 = ? Solve for x, then ?.
January 29, 2016

English (?)
What is the "Big Question"?
January 29, 2016

Business study,econamics,math lit,tourism
Talk to your school counselor, who can ask you specific questions to determine what jobs would suit you.
January 29, 2016

Math
"≥" can be obtained by using ">" key along with "option" key.
January 29, 2016

Math
It would help if you proofread your questions before you posted them. 14 what of an hour?
January 28, 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.
January 28, 2016

Science
Mere boiling would not help unless all the water had evaporated.
January 28, 2016

Science Help!
You cannot copy and paste here. The mating of two LS cats would give you 75% short hair.
January 28, 2016

math
M = 40 - S M + 10 = 2(S + 10) Substitute 40-S for M in the second equation and solve for S. Insert that value into the first equation to solve for M. Check by putting both values into the second equation.
January 28, 2016

Math
5/.75 = ?
January 28, 2016

math
"≥" can be obtained by using ">" key with "option" key. An inequality is treated just like an equation, except that multiplying/dividing by a negative value reverses the carat (< to >).
January 28, 2016

English
Disagree
January 27, 2016

English
Agree
January 27, 2016

Math
Subtract 11 from both sides, then divide by 2.
January 27, 2016

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