# Posts by PsyDAG

Total # Posts: 23,461

Math
Area of base = 9*6/2 Volume = area of base * height Do the calculations.

Math
Welcome

Math
h = 11 * 4 b = 8 * 4 * 2 Combine them.

Cannot draw on these posts.

geometry
The maximum would be closest to a square. 2000m/3 = 667m 677^2 = ?

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. Make an attempt to solve these on your own, so we will respond. Consult your text.

Maths
1) 2,000 + 3,000 - 4,000 = ? 2) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3 * 2 * 2 = ? 3) 4^10 = ?

math
The numbers are the square of 2,3,4,5 and 7. Did you leave 36 out?

Statistics
60 - 40 = 20 55 to 60 = 6 Take it from there.

statistical reasoning
Null hypothesis = they are independent (there is just chance variation) Alternate hypothesis = they are not independent

biology (?)
What following? Cannot copy and paste here.

Math
A variable is something that varies/changes. Lisa - 7

Quantitative Statistic
Accept H1 when z < 1.96 Z = (score-mean)/SEm SEm = SD/?n Z = (215-220)/(15/8) = -5/1.875 = -2.667 Agree with e.

Quantitative 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.

1) Even if you pay more than the minimum, the interest will eat up whatever advantage you have in reward points or more. 2) Google simple vs compound interest. https://www.google.com/search?client=safari&rls=en&q=simple+vs+compund+interest&ie=UTF-8&oe=UTF-8 3) If he cannot pay...

Psychology

Science
The flowers need to have the hummingbird transfer the pollen from one flower to another as it drinks the nectar. What answer does that lead you to?

Science
Hummingbirds do not land on the flowers. They drink while in flight.

science
Since this is not my area of expertise, I searched Google under the key words "stages of thunderstorm development" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=3+stages+of+thunderstorm+development&ie=UTF-8&oe=UTF-8 In the future...

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/15 * (3-1)/(15-1) = ?

Math (?)

Science
Angle of incidence is a measure of deviation of something from "straight on" and may refer to: Angle of incidence (aerodynamics), the angle between the chord of the wing and the longitudinal axis of the fuselage. Angle of incidence (optics), describing the approach ...

math
100A + 70C = 1100 50A + 50C = 625 Divide first equation by 2. 50A + 35C = 550 Subtract that from the second equation. 15C = 75 Solve for C, then insert into any of above equations to find A.

Math
6/.2 = 30 Cannot diagram on these posts.

math
Anything times zero = 0

Math (?)
No equations. Cannot copy and paste here.

Maths
Agree with B. B. How many had salad? 18 Of those, how many also had fruit? 7 So it is 7/18

statistics
(a) Sample mean is expected to be the same. (Standard Error of the mean) SEm = SD/?n (b) Assume equal times. One bulb = 500 hours. Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the ...

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. I am assuming that you want to know how many glasses it will fill. 4 cartons * 2/3 = 8/3 Therefore it would fill 8 glasses.

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.2)^3 = ?

Algebra
Multiply the first equation by 12a and the second equation by 6 to solve.

Math
Cannot draw on these posts.

Math
-18+11 = -7

Math
Not sure what you are asking. 700?

science
Where do you live? What is the source of energy for the electric company in your area?

Algebra 1
Welcome

Algebra 1
3(9w^2-4) = 3(3w-2)(3w+2)

Statistics (?)
For what data?

statistics (?)
It would help if you proofread your questions before you posted them. From how many filled doughnuts?

Statistics (?)
No data on the committee.

maths, statistics
A. Use same process, but multiply proportion by 200. B. Same process, but convert to rank. C. top ten = 10/200 = 1/20 = .05 = proportion

maths, statistics
Another method. Z = (score-mean)/SD = (17400-18000)/1700 = ? Look in the back of your statistics textbook for a table called something like “area under normal distribution” to find the proportion/probability related to the Z score.

math

Math (?)

Here is a start. 4x^3 - 4xy^2 + 5x^2y - 5y^2 = 4x(x^2-y^2) + 5y(x^2-y)

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

Math
Find the mean first = sum of scores/number of scores [(6*2)+ (7*4)...+(11*12)]/42 = ? 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 ...

6th gr. math
From your data, I cannot tell. However, from your data, it seems that the total number of necklaces = c+s. However, the probability that all three are diamond necklaces = c/(c+s) * (c-1)/(c+s-1) * (c-2)/(c+s-2) = ?

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

doan
Multiply by 3. 3x-x-9 = 2x-9

math (?)
No figures. You cannot copy and paste here.

Math
Online "^" is used to indicate an exponent, e.g., x^2 = x squared. (4+2^5)/9 = (4+32)/9 = 36/9 = 4

B = H + 6 Area = HB/2 Substitute H+6 for B in the second equation and solve for H. Insert that value into the first equation to solve for B. Check by putting both values into the second equation. 140 = H(H+6)/2 70 = H^2 + 6H

math (?)
No image. Cannot copy and paste here.

Math
Welcome

Math
Subtract 8 from both sides.

statistics
The mean (average) = sum of scores/number of scores

Math (?)
How many cubes are in the prism? Online "^" is used to indicate an exponent, e.g., x^2 = x squared.

Math (?)
Did they share 6, 8 or 68? Assuming 68: 68/10 = 6.8kg 1kg = 1000g

Math
1 pound = 16 ounces

maths
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(win) = 1/3 * 1/3 = 1/9 P(lose) = 1 - 1/9 = 8/9

math
A = 240 - C 60A + 40C = 12,800 Substitute 240-C 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.

Science (?)
Which other animals? Apes? Mammals? Reptiles?

psychology
From the Internet: It may take as many as four years of training in a psychoanalysis program, on top of the time required to get a doctoral degree, to become a psychoanalytic psychologist. Students in a psychoanalysis program attend classes, participate in supervised clinical ...

18 - 10 = ?

Math
C = 2?r = 2(3.14)46 = ? ! km = 1000m = 100,000cm 100,000/C = ?

Math
Agree

stats.help!
A. 32+16+8+4+2+1 = ? B. Probability of picking winner in each game = 1/2 C. 1/2^63 = 1/2 to the 63rd power

Statistics and Probability
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 for the Z score.

word problems
646 = 16 + 7d/11 Subtract 16 from both sides, then multiply both sides by 11/7.

MATH 2
(15+10)/2 = ?

math
6/7 divided by 3 = 2/7

math
S = 2J S - 12 = J + 12 Substitute 2J for S in the second equation and solve for J. Insert that value into the first equation to solve for S. Check by putting both values into the second equation. Add the two.

Math 120
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. For deaths, approx. 1/4 * 1/4 = ? For getting heart disease (292,188/total female population in US)^2 = ?

Math (?)
What is the question?

math (?)
Need info on "mr skoh".

Statistics
IQFr1 = IQFr2 IQFr1 > IQFr2 You decide one the tail.

math
.3 meters represent 150,000 meters 1:500,000

maths
a) (1-1/3)(1/4) = 2/3*1/4 = 1/6 b) 48/3 = 16 48/6 = 8 48 - 16 - 8 = ?

Biology
Also, they are attracted to carbon dioxide, which is exhaled.

Biology
If so, possibly because it is not covered and does not move as much as the hands.

Math
2:55?

Science
Storage tank

Math
This time, subtract the first equation from the second.

Math
Add the two equations to get this: 5X = 10 That gives you X, then insert value into either equation to get Y.

Language Arts 8B
Welcome

Language Arts 8B
1B, 3C

Math
-?(x^2) = -x

Math
Assuming both winds are the same velocity. 210 -170 = 40, therefore wind is 20mph Therefore plane's unhindred speed would be 210-20 or 170+2 = 190mph

Math
Distance = rate * time 400 = (160-40) * time 400 = (160+40) * time Calculate times and compare.

Math
Looks like all of them are true.

science
To have the sound travel back and forth, it must be 2*340m.

Science
Density = mass(kg)/volume (cubic meters) Density of water = 1 Convert measures to solve.

Math
Unless you got embarrassed and spit them out, you still have 2 balls in your mouth. Is there any data you omitted?

Biology
Although I can't find any data to support this, it might be "cell".

math
It would help if you proofread your questions before you posted them. With all the typos, I am not sure what you are asking.

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 your later post.

science
be a liquid?

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 "areas under ...

Relative Clauses and Pronouns
Not sure what you question is. Be more specific.

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