Wednesday

September 2, 2015
Total # Posts: 20,146

**Algebra**

Definitely don't take plan three at $30/minute. After first month: One: $19.99 + $25 + .32m Two: ($70-$40) + $30 + .30m Three: $28 + $30m At beginning of month, there are no minutes.
*March 14, 2015*

**Stats**

SEm = SD/√n
*March 13, 2015*

**Statistics**

mean = ∑x/n = 980/14 = ? Subtract each of the scores (# in each class) 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 I'll let you do the ...
*March 13, 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.
*March 13, 2015*

**science**

Sperm and egg each have the haploid number of chromosomes = 23. Of these, only one is a sex chromosome, X for females and either X or Y for males.
*March 13, 2015*

**Science Help Please**

Agree.
*March 13, 2015*

**Separation processes**

Since this is not my area of expertise, I searched Google under the key words "bubble-point line" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=bubble-point+line&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*March 13, 2015*

**Science Help**

disagree.
*March 13, 2015*

**Science - 7th grade (repost)**

38. agree 48. C 49. Not sure 57 - 59. Yes
*March 12, 2015*

**satistics**

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 related to the Z score. Hint: in smaller portion.
*March 12, 2015*

**Math**

Including the four in the corners, 16.
*March 12, 2015*

**math**

For each increase on the left, you lose 3 on the right.
*March 12, 2015*

**Science - 7th grade**

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.
*March 12, 2015*

**statistics/probability**

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.
*March 12, 2015*

**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 related to the Z score.
*March 12, 2015*

**Maths**

https://www.google.com/search?client=safari&rls=en&q=Factorizing+trinomials&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*March 12, 2015*

**Math**

W = 3/4L WL = 432 Substitute 3/4L 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.
*March 11, 2015*

**math**

W = 2/3L WL = 864 Substitute 2/3L 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.
*March 11, 2015*

**Science - 7th grade**

Right on all counts.
*March 11, 2015*

**statistics (Agnes)**

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked. What is your question?
*March 11, 2015*

**statistics (Stuart Joel)**

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 related to the Z score.
*March 11, 2015*

**science**

Since this is not my area of expertise, I searched Google under the key words "apparent vs absolute magnitude" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=apparent+vs+absolute+magnitude&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the ...
*March 11, 2015*

**science**

https://www.google.com/search?client=safari&rls=en&q=moon+rotation+and+orbital+period&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*March 11, 2015*

**Stats**

(9-3.25)/9 = ?
*March 11, 2015*

**algebra--1 question**

10^6/10^8 = 10^-2
*March 11, 2015*

**SCIENCE**

First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. I don't think the experiment should be conducted, because administering the chemical to the experimental group could cause kidney failure. ...
*March 11, 2015*

**Stats**

Assuming a normal distribution, I would say the standard deviation.
*March 11, 2015*

**maths**

Is this what you are asking? 256 +273 ______ 529
*March 11, 2015*

**Geometry**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Right.
*March 11, 2015*

**statistics**

YOU determine the critical value by what level of alpha error… P = .05 or .01 or .001. Then you see how the probability of the Z score on the Z table relates to your chosen level.
*March 10, 2015*

**math**

I agree with your answer given. If that's not it, what is the question?
*March 10, 2015*

**Math**

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. Also, no figures shown. You cannot copy and paste here.
*March 10, 2015*

**health**

Beside anger, frustration might also be a factor in causing the anger.
*March 10, 2015*

**statistics**

Which test statistic? Z? t? r?
*March 10, 2015*

**math**

One is the mean. 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 of the Z score. Multiply by 100.
*March 10, 2015*

**Math**

https://www.google.com/search?client=safari&rls=en&q=math+order+of+operations+rules&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*March 10, 2015*

**Science**

What are the other choices?
*March 10, 2015*

**Math**

Reduce the fractions, then get a common denominator and convert all to that denominator. 1/3 + 3/5 + 2/5 + 1/2 + 2/3 = ? What number has factors of 2, 3 and 5?
*March 10, 2015*

**Math**

22 6/6 - 4/6 = ?
*March 10, 2015*

**statistics**

Is there an independent variable being manipulated to see how it effects a dependent variable? If so, that would be an experiment.
*March 10, 2015*

**statistics**

Where is the data?
*March 10, 2015*

**STATS PLZ ANSWER**

Look at the word itself. Variable = something that is able to vary.
*March 9, 2015*

**Math**

Multiply all terms by x^3. 3x^5….
*March 9, 2015*

**INTRO TO STATS**

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.
*March 9, 2015*

**math**

LW = Area L = 2W - 1 Substitute 2W-1 for L. (2W-1)W = 10 Work it from there.
*March 9, 2015*

**math**

a. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. b. (1-.86)(1-.73) = ? c. Either-or probabilities are found by adding the individual probabilities. (1-.86) .73 = ? OR (1-.73...
*March 9, 2015*

**problem and statistics**

Can you plot the points on a scatter diagram? That should give you the answer.
*March 9, 2015*

**Math**

Substitute 3 for x. f(3) = 2*3 + 10 = 6 + 10 = ?
*March 9, 2015*

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. x^3 - x = x(x^2 - 1)
*March 9, 2015*

**Math**

How much colder does it get with each 3m?
*March 8, 2015*

**Math Help From Anybody**

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. 8. What rectangles? I'll give you a little help. 9. Consider that a rectangle has 90&...
*March 8, 2015*

**Math**

Nancy rounded off to nearest hundredths - 3.5.
*March 8, 2015*

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. P(Monday) = 1/7 P(late) = .45
*March 8, 2015*

**Maths**

To plot on a graph, need to know both x and y values. I assume that -1 is an exponent. Online "^" is used to indicate an exponent, e.g., x^2 = x squared.
*March 8, 2015*

**life orientation**

Which intrapersonal conflict? Conflict occurs when person needs decide between incompatible goals. I. Approach-approach involves two or more positive goals. It is easily resolved (banana split/hot fudge sundae example). II. Avoidance-avoidance involves two or more negative ...
*March 8, 2015*

**life orientation**

Which intrapersonal conflict? Conflict occurs when person needs decide between incompatible goals. I. Approach-approach involves two or more positive goals. It is easily resolved (banana split/hot fudge sundae example). II. Avoidance-avoidance involves two or more negative ...
*March 8, 2015*

**Statistics**

I searched Google under the key words "p-hat statistics" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=p-hat+statistics&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if you use ...
*March 8, 2015*

**statistics**

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 of the Z score. Is it ≤ .01?
*March 7, 2015*

**Maths literacy,life science,physical science,consu**

Talk to your school counselor. Assuming that your abilities are adequate or better in all these areas, s/he will have interest tests to help you decide.
*March 7, 2015*

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 100+91*3+94+93+82+89/8 = Do multiplication and division first. 100+273+94+93+82+11.125 ≠ 116,375
*March 7, 2015*

**SAT Math**

3x + 4y = 10, if x = 2 and y = 1.
*March 7, 2015*

**Maths**

Speed = 50/45 = x/60 Solve for x.
*March 7, 2015*

**statistics**

Z = (score-mean)/SEm SEm = SD/√n Use Z table, as indicated in previous posts.
*March 7, 2015*

**science**

If some catastrophe effected that phenotype, there would be no survivors. Also, the genotypes are chance combinations of genes, some of which may have mutated.
*March 6, 2015*

**science**

Assuming B = dominant and b = recessive, then the organism would be tall.
*March 6, 2015*

**Goof**

Sorry, I originally read as second pair free. 1.06 (2 * 24.99 + 12.50) = ?
*March 6, 2015*

**MATH**

Right.
*March 6, 2015*

**help**

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. The area is much too broad. You could write books dealing ...
*March 6, 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.
*March 6, 2015*

**science**

Lizards have legs.
*March 6, 2015*

**math**

What digits?
*March 5, 2015*

**Statistics/Probability**

a. See process in later post. b. Z = (score-mean)/SEm SEm = SD/√n Use same table. C. Judge by your results.
*March 5, 2015*

**Math 6th grade**

Since this is not my area of expertise, I searched Google under the key words "math neutral field" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=math+neutral+field&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*March 4, 2015*

**statistics/normal distribution**

Another method: 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.
*March 4, 2015*

**statistics/Help Please!!**

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 SEm = SD/√n Find ...
*March 4, 2015*

**surface area of solid shapes**

V = 1/3. 22/7. r^2 .h π = 22/7 3V/πh = r^2 Take it from there.
*March 4, 2015*

**algebra**

L * W = 120 6W = 120 3W = ?
*March 4, 2015*

**Math Check**

Right!
*March 4, 2015*

**Business (?) needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*March 4, 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.
*March 4, 2015*

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a. 4/6 * 3/8 = ? b. same process c. Either-or probabilities are found by adding the individual probabilities. 4/6 * 5/8 + 2/6 * ...
*March 4, 2015*

**Probabilities**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual ...
*March 4, 2015*

**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 related to the Z score.
*March 4, 2015*

**math**

3x + 5*6 + 2x Simplify.
*March 3, 2015*

**math**

L * W = area area = (L-z)(W)
*March 3, 2015*

**math**

Area = L * W Area/L = W
*March 3, 2015*

**math**

Insufficient data.
*March 3, 2015*

**Math**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. I don't know if this answer is too advanced for 4th grade. Let one number = x and the other = y. x + y = 7 2/8 x - y = 2 4/8 Add the two ...
*March 3, 2015*

**MATH**

35 * 6/7 * 4/5 = ?
*March 3, 2015*

**Math (?)**

What rectangle and what circle?
*March 3, 2015*

**Science**

Agree with all.
*March 3, 2015*

**Child education**

Since it says "NOT," I would agree with A.
*March 3, 2015*

**6th Grade Math**

-82 + 15*5 = ?
*March 3, 2015*

**word problem**

73 - 5 = 68 If she puts 5 cupcakes in each container = 65, she will have 3 left over.
*March 3, 2015*

**Statistics**

Lacking sample data. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.05) to get the Z score. 90% = mean ± 1.645 SEm SEm = SD/√n
*March 3, 2015*

**6TH GRADE MATH**

Definitely 2.
*March 3, 2015*

**Statistics**

There are 36 total possibilities in rolling two dice. you are looking to get 5, 6, 7, 8, 9, 10, 11, or 12. Rather than looking for all of these, do the reverse 2, 3 or 4, and subtract from 36. 1,1 2,1 1,2 2,2
*March 3, 2015*

**math**

n^2 + (n+1)^2 = 265 Solve for n.
*March 3, 2015*

**Math- Data Management**

mean = ∑x/n 9 = (10*8 + x)/11 Solve for x.
*March 2, 2015*

**Math**

Only the first one is right. Black = 12/2 = 6 Silver = 12/6 ≠ 1 Other = 12 - 12/6 - 12/2 = ?
*March 2, 2015*