Friday
February 12, 2016

Posts by PsyDAG

Total # Posts: 21,182

Math (?)
Lacking data.
February 11, 2016

MATH HELP
18/53 = 34%
February 11, 2016

statistics
What is the original question? ∑x = 5+2+4+2 = ?
February 11, 2016

maths
6:12 = 2:4
February 11, 2016

College Math
I'm confused too. Data is lacking.
February 11, 2016

biology
No diagram.
February 11, 2016

biology
No diagram. Cannot copy and paste here.
February 11, 2016

Statistic
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 10, 2016

Math
3.6:(30*12) = ?
February 10, 2016

MATH HELP
Removing the 16 and 86 would not effect the median.
February 10, 2016

MATH HELP
Mean = ∑x/n Calculate the mean with all the scores, then calculate the mean without the 50.
February 10, 2016

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. n = .73 * 215 23/94 = n/100
February 10, 2016

Math
1.3x = 182 Solve for x.
February 10, 2016

Math
92/45 = x%/100
February 10, 2016

Math
1.2x = 42 Solve for x.
February 10, 2016

Math
When multiplying/dividing, exponents are added/subtracted respectively. 9 - (-4) = 9 + 4 = 13 -10 - (-5) = -10 + 5 = -5 m^13(t^-5)
February 9, 2016

Math
Triangle has total of 180 degrees.
February 9, 2016

Science
https://www.google.com/search?client=safari&rls=en&q=Blood+flow&ie=UTF-8&oe=UTF-8&gws_rd=ssl
February 9, 2016

science
OCPE
February 9, 2016

Biology
Zygote?
February 9, 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.
February 8, 2016

math
Convert all distances to the same unit, meters.
February 8, 2016

fraction
Need to complete your parenthesis.
February 8, 2016

Health-Please Help!!!
All look correct.
February 8, 2016

Statistics
Number of students in each class? 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...
February 8, 2016

science
Do they have the same mass?
February 8, 2016

algebra
Correction: anything times one is that quantity.
February 8, 2016

algebra
anything plus 1 is that quantity. 2 + xx
February 8, 2016

algebra
anything plus 1 is that quantity. 2 + xx
February 8, 2016

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. See later post.
February 8, 2016

science
No pulley system shown. Cannot copy and paste here.
February 7, 2016

Mathematics
Range = max - min
February 7, 2016

math
F, T, F, T
February 7, 2016

Math
Susie 2 * 2 = 4 Bobby 3 * 1 1/3 = 4
February 7, 2016

Math
If x = one number, then the other is x+4. x + x+4 = 32 Solve for x.
February 7, 2016

biology
What is you question?
February 7, 2016

maths
It doesn't make sense. If "chocolate were packed equally in 21 boxes," there would be many more than 18 per box. 630/18 = boxes needed.
February 7, 2016

Math
1.5/3 = ?
February 6, 2016

statistics
Z = (score-mean)/SD = (45-45)/4 = 0 Need the parenthesis. b. Z = (30-45)/4 = -15/4 = ? c. No. 1.5 = (x-45)/4 Solve for x. d. Z = (41-45)4 = -1 Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the ...
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 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

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