Saturday
February 25, 2017

Posts by PsyDAG

Total # Posts: 23,047

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 5(4+3) * 6 = 210
September 12, 2016

math
W = 2L - 8 W * L = 172 Substitute 2L-8 for W in the second equation and solve for L. Insert that value into the first equation to solve for W. Check by putting both values into the second equation. Then use Pythagorean theorem. W^2 + L^2 = diagonal^2
September 11, 2016

Math
5 and -5, the magnitude of a real number without regard to its sign.
September 11, 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. See later post.
September 11, 2016

Math
The same. High minus low still the same.
September 11, 2016

math (?)
What about the hundreds place? x95, x84, x73, x62, x51 Need more info.
September 11, 2016

math
F = M - 240 M - 260 = 2F Substitute M-240 for F in the second equation and solve for M.
September 11, 2016

algebra (?)
What is your question?
September 11, 2016

Maths
(1-4/9)x = 45 Solve for x, then subtract 45 from that.
September 11, 2016

Math
N + 3
September 11, 2016

math
Radius bisects square, so use Pythagorean theorem. x^2 + x^2 = 2x^2 = 12^2
September 10, 2016

math
12^2
September 10, 2016

math
Use Pythagorean Theorem. s^2 + s^2 = 12^@
September 10, 2016

math
Pythagorean theorem again 12^2 + 9^2 = d^2
September 10, 2016

math (?)
Which two corners?
September 10, 2016

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, 2016

Science
1-3 Right 4. Rejected 5. Lack of thiamine causes beriberi. New set of chickens fed whole grain or polished rice.
September 10, 2016

Science
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. Cannot draw diagrams on these posts.
September 10, 2016

English (?)
equals what?
September 9, 2016

Math
Right, x = 18 mean = ∑x/n Therefore mean * N = ∑x 14 * 5 = 70 Which 5 scores will = 70?
September 8, 2016

Math
Subtract 8x from both sides, then divide both sides by -4.
September 8, 2016

Math
You do not need to use all four operations ("at most"). 33*3 + 3/3 = 100
September 8, 2016

Math
Assuming that 10.5 is the height of the pictures, that is what I would do.
September 7, 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.
September 7, 2016

Math
Right
September 7, 2016

Algebra Age
J = 3A J+15 = 2(A+15) Substitute 3A for J in the second equation and solve for A. Insert that value into the first equation to solve for J. Check by putting both values into the second equation.
September 7, 2016

Math
I will do two for you to show the process. 2) 97/100 3) 36/2
September 7, 2016

Math (?)
What is your question?
September 7, 2016

math
Cannot graph on these posts.
September 7, 2016

Math
40/7 = x/20 Solve for x.
September 7, 2016

Math
Although each chosen color was the most likely, the majority of the time (55%) they will be wrong.
September 7, 2016

science
Sexual reproduction involves a chance combination of half the chromosomes from each parent. It is impossible to tell how it effects the chances for survival for AN organism, but with severe environmental changes, it increases the chances that some members of the species will ...
September 7, 2016

english speech
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.
September 7, 2016

MATH help asap
You need to post the specific problem, so we can give an adequate response.
September 7, 2016

Math (?)
It would help if you proofread your questions before you posted them. Second car speed?
September 7, 2016

Math
10/3 = x/.5 Solve for x.
September 7, 2016

Math
In the two hours, first car has traveled 70 miles. 55x = 70 + 35x Solve for x. 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 7, 2016

math
54/18 = 3
September 7, 2016

Science
Every question answered brings up new questions. Can you think of a better way than the inquiry process?
September 7, 2016

Science
Since this is not my area of expertise, I searched Google under the key words "How Can Nitrogen Be Obtained From Ammonia Gas? " to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+Can+Nitrogen+Be+Obtained+From+Ammonia+Gas%3F&ie=UTF...
September 7, 2016

Maths
It would help if you proofread your questions before you posted them. You are missing a number between - and /.
September 7, 2016

statistics
5 * 10 * 6 * 8 = ?
September 7, 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.
September 7, 2016

Science
Since this is not my area of expertise, I searched Google under the key words "light bulb watts and volts" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=light+bulb+watts+and+volts&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...
September 7, 2016

Math (?)
What graphs? Cannot copy and paste here.
September 7, 2016

Math
one
September 7, 2016

math
431,205,601
September 6, 2016

Algebra
22.50 = (1-.25)p Solve for p.
September 6, 2016

Science
...or predator.
September 6, 2016

Science
It matches the background, so they are less likely to be detected as prey.
September 6, 2016

Math
Just think of Arctic Circle, where the sun is up 24 hours a day during the summer.
September 6, 2016

Math
Correlation does not necessarily mean causation.
September 6, 2016

Math
Convert to decimals to clarify. .6 + .7 = 1.3 lbs 1.3/.8 = ?
September 6, 2016

Geometry
Have no idea about length of line. Cannot copy and paste here.
September 6, 2016

math
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 8 + 12p ≤ 140 Solve for p.
September 6, 2016

stats
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. Z = (score-mean)/SD You can also find table in the back of your statistics text labeled...
September 5, 2016

profit and loss (?)
It would help if you proofread your questions before you posted them. What is your question?
September 5, 2016

Science PLEASE HELP
Since this is not my area of expertise, I searched Google under the key words "what functions do individual cells perform that are similar to the functions of our bodies?" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+...
September 5, 2016

science
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 5, 2016

math
Assuming all rows have the same number of seats: 600/36 = 16.67 = ?
September 5, 2016

MATH
The one boy could be born first, second, third or last, 4 ways. The rest will be girls. Cannot do a tree diagram here.
September 4, 2016

Statistics
P(65+) = .2 P(<65) = .98 P(2<65 of 6) = .98^2 * .2^4 = ? Cannot construct probability distribution here.
September 4, 2016

Math
Specific weight is weight per unit volume. 540/(5)^3 = ? g/cc
September 4, 2016

Algebra
A = C + 4 9A + 5C = 76 Substitute C+4 for A in the second equation and solve for C. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
September 3, 2016

math
mean = ∑x/n Since you just want change you can ignore direction. Use absolute values. Disagree
September 3, 2016

math
Have more confidence in yourself.
September 3, 2016

math
Agree with answer. Why are you not sure of your addition?
September 3, 2016

math
12 - 3 + 10 - 15 = ?
September 3, 2016

algebra 1
-3*4 = -12 A negative times/divided by a negative is positive. -12/-6 = 2
September 3, 2016

algebra 1
disagree
September 3, 2016

math
123,456
September 3, 2016

algebra 1
agree
September 3, 2016

Math
450 = 3/4, then 150 = 1/4 full = 600 2/3 * 600 = ?
September 3, 2016

math
29.97 * .2 + ?
September 3, 2016

Math
Assuming that you mean what she gets that week, I agree.
September 3, 2016

math (?)
No table. Cannot copy and paste here.
September 2, 2016

Pre-algebra
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(red) = 3/6 P(blue) = 5/6
September 2, 2016

algebra
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 (.25) and its Z score. Insert data into above equation and solve for score.
September 1, 2016

AP Psychology
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results.
August 31, 2016

Examples
Don't know about your statistics, but here is answer to your question. com·mon stock noun NORTH AMERICAN shares entitling their holder to dividends that vary in amount and may even be missed, depending on the fortunes of the company.
August 31, 2016

Science
How many significant figures do you want? I would pick C. http://www.purplemath.com/modules/rounding2.htm
August 31, 2016

science
A main point in this question is "you." 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.
August 31, 2016

Math
(100)16/(26+19+21+16+32) = ?
August 31, 2016

Math (?)
No model pictured. Cannot copy and paste here.
August 30, 2016

Math
Is the blank space supposed to be a decimal point? 10,000 + 1,000 + 700 + ....
August 30, 2016

science
conclusion
August 29, 2016

algebra
m - 150 = g m - 190 = g/2 m - 190 = (m-150)/2 Solve for m.
August 29, 2016

Statistics
Maybe this will help: https://www.google.com/?client=safari#q=venn+diagram+template&gws_rd=ssl
August 29, 2016

Statistics
Cannot draw Venn diagram here.
August 29, 2016

science
atomic number?
August 28, 2016

Statstics
Z for .01 on each side is approximately 2.33. 98% = mean ± Z(SD/√n) = 128 ± (2.33)(21/√41) I'll let you do the calculations.
August 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.
August 28, 2016

math
2.4/12 = ?
August 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.
August 27, 2016

Algebra
3750 = 3000c - 900 Add 900 to both sides, then divide both sides by 3000.
August 26, 2016

Math
4,999 + 4,998
August 26, 2016

Statistics
A) 12/40 B) 13/40 * 100 C) 4/12 * 100 D) (40-13-12)/40
August 25, 2016

biology
Let N = normal allele and b = colorblind Parents are XNY and XNXb Only the girls in the first generation carried the b. If the boys had the b, they would be colorblind, because there would be no N on the Y chromosome. To produce 50% colorblind, the males must have married ...
August 25, 2016

Algebra 1 (?)
What variables?
August 24, 2016

science
Talk to your school counselor. That person should be able to answer your question better than we could.
August 23, 2016

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