Thursday
September 29, 2016

Posts by PsyDAG

Total # Posts: 22,398

math
Divide 576 by 9, then multiply by 4 for muffins and 5 for cookies. 256 muffins 320 cookies
September 18, 2016

Math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. a^2 + b^2 = c^2 Cannot find x unless already know value of a and c. You only know c.
September 18, 2016

math- study question for final
This is what I would do. Z = (score-mean)/SEm SEm = SD/√n P ≤ .05 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. How does it compare?
September 17, 2016

Algebra
L = S + 47 L = 6S - 3 Substitute S+47 for L 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 16, 2016

Statistic
You may have an answer, but you don't even indicate the question.
September 16, 2016

statistics
SEm (standard error of the mean) = SD/√n
September 16, 2016

math
1. disagree 2. agree 3. r = d/t 4. agree
September 15, 2016

math geometry
L = 2w + 12 L * w = 80 Substitute 2w+12 for L in the second equation and solve for w. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
September 15, 2016

Math
1. disagree 2. agree 3. agree
September 15, 2016

Math
The first is the absolute value, regardless of the sign. The second is negative.
September 15, 2016

stats
Z = (score-mean)/SEm SEm = SD/√n SD = √variance Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for each and the Z score. Insert into above equation.
September 15, 2016

aps rk puram .math
There are only three possibilities — 123, 246, 369. Which fits?
September 15, 2016

math
How many edges does a cube have? Multiply that number by (18-10).
September 15, 2016

Math
a. 180/36, 252/36 b. 252/180 c. 10(252/180) No diagram.
September 15, 2016

statistics
Probability answer never > 1. If Z = 2, P > 2 = .0228
September 15, 2016

math
It would help if you proofread your questions before you posted them. Level of significance? 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/...
September 15, 2016

stats
Grade points times credit hours divided by total credit hours. [(5*4) + (4*3) + (3*1) + (2*3) + (1*4)]/15 = ?
September 15, 2016

science
Holland? What are your choices?
September 15, 2016

Math
Cannot draw diagrams here.
September 14, 2016

maths
q = a + 15 3a + 2q = 3 1/8 Substitute a+15 for q in the second equation and solve for a.
September 14, 2016

Math
You are welcome.
September 14, 2016

Math
Yes
September 14, 2016

Math
1/8
September 14, 2016

Math
For every 3 parts of blue, you need 4 parts of yellow.
September 14, 2016

Math
Area = 1/2 height * base 48 = 1/2 height * 12 Solve for height.
September 14, 2016

math
Circumference = π d Convert to cm. Area = 10 circumference
September 14, 2016

Statistics
Variable = number of children per family Can a family have a half of a child? Possible values for a family = 1, 2, 3, 4....
September 13, 2016

Math
93
September 13, 2016

algebra
1.4x + .25 = 1.99 Solve for x.
September 13, 2016

math
j = 8/5m j - m = 390 Substitute 8/5m for j in the second equation and solve for m. Insert that value into the first equation to solve for j. Check by putting both values into the second equation.
September 13, 2016

Math HELP!
3/4 > -5/6 -1 3/4 < 3/4 2 3/4 > 2 4/6
September 13, 2016

Science (?)
Need more data. 100,000 km per what time unit? Sometimes Earth is close to Mars, when it's making a pass, and other times it's far away, at the other side of the track. The minimum distance from the Earth to Mars is about 54.6 million kilometers. The farthest apart ...
September 13, 2016

Biology
Since this is not my area of expertise, I searched Google under the key words "types of blood parasites" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=blood+parasites&ie=UTF-8&oe=UTF-8&gws_rd=ssl#q=types+of+blood+parasites In the...
September 13, 2016

Statistics (?)
Lack of data. What is your question? Assuming n stands for number in sample and S indicates standard deviation, it would be nice to know the mean for each group.
September 13, 2016

biology
disagree with last two answers.
September 13, 2016

MATH
Es mejor escribir en inglés.
September 12, 2016

MATH(?)
No numeros aqui. No puede copia o goma aqui.
September 12, 2016

Psychology
How is this psychology?
September 12, 2016

Math
At $.01 difference for each pencil, you need 200.
September 12, 2016

math
60 + 10m
September 12, 2016

algebra
420,000
September 12, 2016

Science needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
September 12, 2016

maths
7x = 4x + 9 Solve for x.
September 12, 2016

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
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

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