Sunday
August 28, 2016

Posts by PsyDAG

Total # Posts: 22,163

Math
What is your question? Here is a guess. a/c - c/a Multiply by ca a^2 - c^2
September 15, 2015

Science
No, the experiment is confounded with the quality of the irrigation systems.
September 15, 2015

Math
2x ≤ $35 Your division signs look like plus signs. 2x/2 ≤ $35/2 x ≤ $17.50 per puppy However, if one puppy < $17.50, the other can be proportionately > $17.50. "≤" is found by pressing "<" and "option" keys.
September 15, 2015

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.
September 15, 2015

satistics
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 "...
September 15, 2015

Statistics
Approximately mean ±2Z or ±2SD
September 14, 2015

Science
A, but anyway, the sample of 2 hits is too small.
September 14, 2015

science
No. 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.
September 14, 2015

Math
Graph it out. What does it look like?
September 14, 2015

STATISTICS
Need measure of variability.
September 14, 2015

math
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.
September 14, 2015

Math
No circle graph. Cannot copy and paste here.
September 14, 2015

Math
What was original problem?
September 14, 2015

Algebra
It would help if you proofread your questions before you posted them. Do you really want "the average cost of the crate"? ($75+$82)/2 = ?
September 14, 2015

algebra
-3*(4+7) = -3 * 11 = -33
September 14, 2015

statistics
It seems like it is asking for the numerical values of each variable.
September 13, 2015

grammer
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, I will start you out. drawings (plural) are
September 13, 2015

math
9.6 - 8.4 = ?
September 13, 2015

Maths
1) 2a^2b(1+4b) 2) Correct
September 13, 2015

Physics needs help
Please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you. Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
September 13, 2015

math
12 cm (120*72)/(12*12) = 60
September 13, 2015

math
6 cm (120*72)/(6*6) = 240
September 13, 2015

math
What is your question?
September 12, 2015

algebra
f(2) = (3*2^2) - (4*2) - 1 = 3*4 - 8 - 1 = 3 Use the same process for the remaining problems.
September 12, 2015

math
2/5c + 4 -1/5 = -4 Subtract 4 and add 1/5 to both sides. 2/5c = -7 4/5 = -7.8 Multiply both sides by 5/2. c = 19.5
September 12, 2015

Math
Quantitative, quantitative, nominal, (nominal)???, quantitative
September 12, 2015

Algebra 2
What expression? You cannot copy and paste here.
September 12, 2015

statistic
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.
September 12, 2015

math
1/10 = x/11.9 Solve for x. Do the same for second question.
September 12, 2015

Biology
If blue is recessive to hazel, yes. Even not knowing genotypes for hair, I would assume not.
September 11, 2015

algebra
80 + .35n = 49.25 + .5n 30.75 = .15n n < 205
September 11, 2015

biology
Right
September 11, 2015

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. A negative times a positive is a negative.
September 11, 2015

science
What graph? You cannot copy and paste here.
September 11, 2015

science
What graph? You cannot copy and paste here. Only use one name.
September 11, 2015

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.
September 11, 2015

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. How is this biology?
September 11, 2015

psychology
What are your choices? Behaviorism?
September 10, 2015

Alegbra
s = L -18 5L - 4s = 100 Substitute L-18 for s in the second equation and solve for L. Insert that value into the first equation to solve for s. Check by putting both values into the second equation.
September 10, 2015

Math needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
September 10, 2015

Statistics
.997 = mean ± Z * SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.003/2) and its Z score. Insert data into above equation and solve.
September 10, 2015

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Get rid of parentheses first. Z - 9 = 208 + 530 - 8 Continue from there.
September 10, 2015

Math
26^3 + 10^2 = ?
September 10, 2015

Math question
Are you sure it is 3 squares rather than 4? If 4, have longer sticks in a square, and shorter sticks bisecting within the larger square.
September 9, 2015

Math
Get rid of parentheses first. -12÷3•(-8+16-6)+2 = -12÷3•(2)+2 = ?
September 9, 2015

science
How about using a magnet?
September 9, 2015

science
What surface?
September 9, 2015

Science
What list? You cannot copy and paste here.
September 9, 2015

Science
No following. Cannot copy and paste here.
September 9, 2015

Physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
September 9, 2015

statistics
See previous post.
September 9, 2015

statistics
Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n = number of cells Look up value in X^2 table in the back of your ...
September 9, 2015

Snethezekile High School
I would suggest consulting your high school school counselor, who can administer interest tests and ask you specific questions to help you in your decisions.
September 9, 2015

algebra
If roommates are not sharing in this expense, M = $500 + x However, if it is "how much more money," then M = x.
September 9, 2015

?
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. What is your question?
September 9, 2015

Math
Of the 4 by 6, which is the width? L/W = NL/15 Enter L and W and solve for new length (NL).
September 8, 2015

Math
Percent bar? 300 * .80 = ?
September 8, 2015

Math
Board is 26 by (26 + 10) = 36. Area = 26 * 36 = ? Divide area by 9, then calculate possible length and width.
September 8, 2015

Math
You do not need to press "return" to put in the denominator in a fraction. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 7/10 * (7-1)/(10-1) = ?
September 8, 2015

physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
September 8, 2015

Spanish
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. está(?)
September 8, 2015

Stats
Not sure how you define "deviation score." Is it a Z score? T score? Raw score?
September 8, 2015

Statistics
They would all also be in dollars.
September 8, 2015

Math
.3(100) + 4 + .1(100) + 6 = 34 + 16 = 50 minutes to run one cycle. The next cycle will start with 10 minutes remaining in the hour, leaving 20 minutes remaining in the second hour, and so on. Capacity > 200 units/hour
September 8, 2015

science!
Agree
September 7, 2015

Science
Since this is not my area of expertise, I searched Google under the key words "ER cell type" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=ER+cell+type&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you ...
September 7, 2015

Interview Questions
What type of exam are you giving the elderly patient? The are vision charts which just have capital E's in various orientations. As you point to each letter, the patient can use hand signals to indicate the orientation of the letter.
September 7, 2015

algebra
Disagree (1-.60)x = 2500 Solve for x.
September 7, 2015

probability
http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf
September 7, 2015

probability
You want to know the probability of a Royal Flush. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/52 * 1/51 * 1/50 * 1/49 * 1/48 = ?
September 7, 2015

Math Probability
1/5000, so now you would have a 1/2500 chance.
September 7, 2015

finite
It would help if you proofread your questions before you posted them. I have no idea what you are asking. Clarify.
September 7, 2015

finite
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A) 13/52 * 12/51 = ? B) 13/52 * 13/52 = ?
September 7, 2015

finite
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A) .73877^2 = ?
September 7, 2015

statistics
P = .396
September 7, 2015

stats
http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf
September 7, 2015

Math
5/12 + 9/12 = ?
September 7, 2015

Math
13/8 = 1 5/8
September 7, 2015

Math
7 2/3
September 7, 2015

Statistics
Number of meals served * .6 = ?
September 7, 2015

physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. How is this biology?
September 7, 2015

Statistics (?)
I have no idea of what measure the IQV is using.
September 6, 2015

math
It would help if you proofread your questions before you posted them. I have no idea of the meaning of some of your symbols. 1.50 + .50x = 25 Except for Y and U symbols, the last two choices seem identical.
September 5, 2015

math
I assume that "absolution deviation" means the same as standard deviation (SD). Z = (score-mean)/SD 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 ...
September 5, 2015

fundamentals of math
No more than 15 will need both repairs. Since 15 + 26 = 41, at least one will need both. 40 - 26 = 14 could need neither.
September 5, 2015

physics
First, indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Second, it would help if you proofread your questions before you posted them. Convert to what?
September 5, 2015

math
Welcome
September 4, 2015

math
Agree.
September 4, 2015

math
1/2 = one over two Step 2, 3x - 4x = -x
September 4, 2015

math
You are welcome.
September 4, 2015

math
(cd+b) = 7*(-4) + (-5) = -28 - 5-33 a(cd+b) = -2 * (-33) = -66 Negative times negative = positive b - (-66) = -5 + 66 = 61
September 4, 2015

biology
Do not agree. The tortoise digs in response to the heat.
September 4, 2015

Math
It will be either rock or dance. Either-or probabilities are found by adding the individual probabilities. 54/158 + 92/158 = ?
September 3, 2015

math
It would help if you proofread your questions before you posted them. First of all, there is no diagram. You cannot copy and paste here. Second, you info is hard to understand. What do all the dollar signs ($) signify?
September 3, 2015

algebra 2
With the slash, I don't know if the -8 is a divisor for the 5. If it is, you don't add 8 to both sides. If the slash was a typo, add 13 to both sides. Then multiply both sides by 3x.
September 3, 2015

Science
https://www.google.com/search?client=safari&rls=en&q=Scientific+methodology&ie=UTF-8&oe=UTF-8&gws_rd=ssl
September 3, 2015

maths
S = 2D 4S + 3D - 8000 = 30,000 Substitute 2D for S in the second equation and solve for D. Insert that value into the first equation to solve for S. Check by putting both values into the second equation.
September 3, 2015

MATHS
Please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you. Let x = original amount x - .5x - 2/3(.5x) = 200 Solve for x.
September 3, 2015

maths
1 rs = ? paise
September 3, 2015

Algebra
16(4^2) + 24*4*3 + 9(3^2) = ? You should be able to square the numbers and do the rest of the math.
September 3, 2015

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