Saturday
January 21, 2017

Posts by PsyDAG

Total # Posts: 22,884

Algebra
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. When multiplying/dividing, exponents are added/subtracted respectively. (6*10^-5)(3*10^4...
October 17, 2016

Math
√1156 = 34 4 * 34 = ?
October 17, 2016

Statistics
It would help if you proofread your questions before you posted them. Values not given.
October 16, 2016

math
(1-.28)x = 126 Solve for x.
October 16, 2016

algebra
That ± (plus or minus) 25 ft. 25 * .01 = .25 ft 24.75 - 25.25 ft
October 13, 2016

math
S = A + 12 6A + 4S = 548 Substitute A+12 for S in the second equation and solve for A. Insert that value into the first equation to solve for S. Check by putting both values into the second equation.
October 13, 2016

math
Assuming P(X=0) means neither ordered coffee = (1-.8)(1-.8) = ? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
October 13, 2016

the tail
You cannot copy and paste here.
October 13, 2016

Math
75/1000
October 12, 2016

Mathmatics
2x-1 = 4x^2-5x+2 4x^2 - 7x + 1 = 0
October 12, 2016

algebra homework help
From the way you originally have it stated, I would agree.
October 11, 2016

Math
4,000,000 = 40 hundred thousand .00040 = 40 hundred thousandths
October 11, 2016

Math
We cannot draw a grid here.
October 11, 2016

algebra
Length = √(3,136*4)
October 11, 2016

Math
420%
October 11, 2016

Science
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 100,000 m^3 = 100*1000 m^3
October 11, 2016

Algebra 1A
Materials + labor < $150
October 11, 2016

Statistics
Since the order of choice is not important, you would use combinations.
October 9, 2016

Forensic Psychologist
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.
October 9, 2016

Statistics
What is the value of the sample mean? 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 ...
October 9, 2016

Statistics
To calculate it yourself: 95% = mean ± Z (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 (±.025) and its Z score. Insert data into above ...
October 9, 2016

Statistics
Question incomplete. Need to be more specific.
October 9, 2016

Math
.75π * .2π = .15π^2
October 9, 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.
October 9, 2016

Math
What is your question?
October 9, 2016

Math (?)
Lacking adequate data.
October 9, 2016

MATH
6/8 > 2/4 > 1/4
October 9, 2016

Math
1.0825 * $88 = $?
October 9, 2016

Math
cot@/cot@ = 1 tan@/tan@ = 1
October 9, 2016

Math (?)
What is your question?
October 9, 2016

math
Impossible. An integer is one numeral (8, 9, 4, etc.). Max sum of two consecutive integers (8+9) = 17. Typos?
October 9, 2016

maths
(17-x)(14-x) = 108 Solve for x.
October 9, 2016

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 (.1003) and its Z score. Insert data into equation above.
October 8, 2016

Geometry
Would you ever try to plan any building without relying on geometry? How about surveying? That is just a start.
October 8, 2016

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

Maths
Area = length * width = 6.1*8.1 = ?
October 8, 2016

statistics
No data. Cannot copy and paste here. However, I will give you a start. Ho: mean1 = Mean2 Ha: mean1 ≠ mean2
October 7, 2016

Drivers ED
Welcome
October 7, 2016

Drivers ED
agree.
October 7, 2016

Math
It would help if you proofread your questions before you posted them. From your data, he spent 1/4 on books. Typos?
October 7, 2016

Pre-Algebra
Do you have any choices? rotated, similar, positions, total?
October 7, 2016

Drivers ED
agree. http://dor.mo.gov/pdf/Chapter3.pdf
October 7, 2016

english
It would help if you proofread your questions before you posted them. "Vancouver, Canada" is a complete subject. "vancouver canda is in british columbia" is a complete sentence.
October 7, 2016

Health And Physical Education
It would help if you proofread your questions before you posted them. Uncomfortable what? "one BBBB"? The only defense mechanism is a.
October 7, 2016

Algebra
We cannot draw a diagram on these posts. However, the maximum are would be closest to a square.
October 7, 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 for each Z score. For C, use P(±.40) to find Z and insert into equation above.
October 7, 2016

maths
It would help if you proofread your questions before you posted them. # black balls/ total balls
October 7, 2016

Health!
Since this is not my area of expertise, I searched Google under the key words "saddle joint motion" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=saddle+joint+motion&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
October 6, 2016

algebra
mean = ∑x/n 93 = (95+92+98+76+100+x)/6 Solve for x. x ≥ ?
October 6, 2016

Math
g = 52 - c 2c + 4g = 128 Substitute 52-c for g in the second equation and solve for c. Insert that value into the first equation to solve for g. Check by putting both values into the second equation.
October 6, 2016

Health
I disagree. You are doing this to "maintain my #1 seed on the tennis team."
October 6, 2016

math please help
450 + .07s ≥ 681 + .04s Solve for s.
October 6, 2016

Math
adult size = 5.5 * 15/.75 = ? Child size = 5.5 * 15/.5 = ?
October 5, 2016

Math
7 * 4 = 28 ft^2 Each plant requires 1 ft^2. What does that tell you?
October 5, 2016

psychology (?)
What choices? You cannot copy and paste here.
October 5, 2016

Science
Which weighs more?
October 5, 2016

Statistics
"at least 4" = 4, 5, or 6. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Online, “*” is used to indicate multiplication to avoid confusion with “x&#...
October 5, 2016

Math
Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. I'll let you do the calculations.
October 5, 2016

Biology
Since this is not my area of expertise, I searched Google under the key words "man made allopolyploid cereal crop" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=man+made+allopolyploid+cereal+crop&ie=UTF-8&oe=UTF-8&gws_rd=ssl In ...
October 5, 2016

statics
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, here is a start. If the events are independent, the probability of both/all events ...
October 5, 2016

maths
M = Et - 5 Er = 2Et Er + Et + M = 47 Substitute Et-5 for M and 2Et for Er in the third equation and solve for Et. Insert that value into the other equations to solve for M and Er. Check by putting all values into the third equation.
October 5, 2016

Math (?)
Lack data. Also cannot graph on these posts.
October 3, 2016

Math
Since this is not my area of expertise, I searched Google under the key words "what does skip half an increment mean in graphs" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+does+skip+half+an+increment+mean+in+graphs&ie=UTF-...
October 3, 2016

math
A had 3 wins, one loss and one draw in relation to B. That means 5 games.
October 3, 2016

algebra
5/20* 2/19* 1/18
October 3, 2016

math
$3.15/3.875 = $.81 Compare to $1.60 Not "more than 2 times the price."
October 3, 2016

Biology
Think of it this way. Over which source would the experimenter have the least control?
October 3, 2016

math
First of all, online "^" is used to indicate an exponent, e.g., x^2 = x squared, and “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Also when multiplying/dividing, exponents are added/subtracted respectively. 5....
October 3, 2016

Math115
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 you later post.
October 2, 2016

algebra
good!
October 2, 2016

algebra
Since this is not my area of expertise, I searched Google under the key words "degree of monomial" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=degree+of++monomial&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
October 2, 2016

math
Close. h = (S-2πr^2)/2πr = S/2πr - r Online "^" is used to indicate an exponent, e.g., x^2 = x squared.
October 2, 2016

math (stats)
Examples P(not green) = 1 - .15 = ? Either-or probabilities are found by adding the individual probabilities. P(blue or orange) = P(blue) + P(orange) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of ...
October 2, 2016

Science
14 days = 14 * 24 * 60 * 60 seconds 2.5 m = 2.5 * 1,000,000 micrometers micrometers/seconds = ?
October 2, 2016

Algebra
L = 2W L*W = 259 Substitute 2W for L in the second equation and solve for W.
October 2, 2016

Math (?)
Lack data. Cannot copy and paste here.
October 2, 2016

Math work
Either-or probabilities are found by adding the individual probabilities. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(RB) = 7/38 * (7-1)/(38-1) = ? P(L) = 11/38 * 10/37...
October 2, 2016

Math (?)
Typos? Smallest digit means in one's place? 245 one digit MORE than the digit in the tens place?
October 2, 2016

Genetics
http://blogs.sciencemag.org/pipeline/archives/2016/04/18/the-myth-of-ethidium-bromide For further info, Google other sources.
October 2, 2016

Finite math and probability
P(Blue) = 7/16 P(Even) = 7/16 Either-or probabilities are found by adding the individual probabilities.
October 2, 2016

Principle of color
complement of red = green https://www.google.com/search?client=safari&rls=en&q=complement+of+red+color&ie=UTF-8&oe=UTF-8&gws_rd=ssl
October 2, 2016

principles of color
get it less saturated?
October 2, 2016

algebra
You added a negative sign in front of 800 when checking.
October 1, 2016

math
If it is not a continuous variable, 25. If continuous, 24.5.
October 1, 2016

maths
(2x)^2 --> 4Y 4Y is 300% greater than Y.
October 1, 2016

Probability
4/52 * 3/51 * 2/50 * 4/49 * 3/48 = ?
October 1, 2016

stats
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (.52)^4 * (1-.52) = ?
October 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. (1-.569)^3 = ?
September 30, 2016

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 3*10^-8 seconds = 1 m 3 seconds = ?m I'll let you find the solution.
September 30, 2016

Stat 154
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 5/100 * 4/99 * 95/98 * 94/97 * 93/96 * 92/95 * 91/94 * 90/93 = ? Or you could explore combinations and permutations. https://www...
September 30, 2016

Math
To solve for t (I'm assuming that is what you want to do.): Multiply both sides by 4 to get rid of the divisor. 2t + 14 = 3t + 36 Combine terms.
September 30, 2016

Math (?)
$8, unless you want to define your "four step plan."
September 29, 2016

Psychology
They differ in emphasis, especially motor functions, but interact via the corpus callosum. https://en.wikipedia.org/wiki/Lateralization_of_brain_function
September 29, 2016

maths
Welcome
September 29, 2016

maths
Only one possible outcome. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P (Both lemon) = 5/9 * (5-1)/(9-1) = ? P (both orange) = 4/9 * 3/8 = ? Either-or probabilities are ...
September 29, 2016

Grammar
She lit scented candles, so the air will smell sweetly.
September 29, 2016

math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 2x^2 - 6x - cx + a + 6
September 29, 2016

Statistics
True
September 29, 2016

statistics
Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. Standard deviation = square root of variance Z = (score-mean)/SEm SEm...
September 29, 2016

Statistics
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability in the smaller area for the Z score of 1.32.
September 28, 2016

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