Thursday

July 2, 2015

July 2, 2015

Total # Posts: 20,001

**Math**

248/100 = 124/50 = 62/25
*February 13, 2015*

**statistics**

Didn't I answer this previously? 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. Range = highest score minus lowest Find ...
*February 13, 2015*

**math**

2 1/5 = 11/5
*February 12, 2015*

**Math**

Insufficient data.
*February 12, 2015*

**science 1 question**

I would say B.
*February 12, 2015*

**Math**

Let x = longest side of the triangle x + x/2 + (x-7) = 53 Solve for x, then x/2 and x-7.
*February 12, 2015*

**Math: Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Assuming there is no replacement: P(red,red) = 3/10 * 2/9 = ? P(red,blue) = 3/10 * 4/9 = ?
*February 12, 2015*

**Statistics**

Discrete only can be whole numbers, no partial.
*February 12, 2015*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 22/100 * 21/99 * 20/98 = ?
*February 12, 2015*

**Introductory Algebra**

No blueprint available. L = 2W + 7 2W + 2L = 68 Substitute 2W+7 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.
*February 11, 2015*

**math**

8.2m/5m = x miles/15 miles Solve for x.
*February 11, 2015*

**pre-algebra**

7 cm/40.4 cm = x m/80.6 m Solve for x.
*February 11, 2015*

**Science**

Since this is not my area of expertise, I searched Google under the key words "describe the flow of blood in the human body" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=describe+the+flow+of+blood+in+the+human+body&ie=UTF-8&oe=...
*February 11, 2015*

**science**

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

**math**

P(treat) = 20/36 = ? P(not) = (36-20)/36 = ?
*February 11, 2015*

**Law?**

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

**math**

You cannot copy and paste here.
*February 11, 2015*

**6th grade math**

For the same reason that you do it in an equation, to keep it balanced.
*February 11, 2015*

**statistics**

Z = (score-mean)/SD Which one has the largest positive Z score?
*February 11, 2015*

**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)/SD Find ...
*February 11, 2015*

**biology**

Mendel says 4.
*February 11, 2015*

**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.
*February 11, 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. Hint: look in the smaller portion.
*February 10, 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.
*February 10, 2015*

**statistics**

95% = mean ± 1.96 SEm SEm = SD/√n
*February 9, 2015*

**math (?)**

Does she need 1/5 of 6 yards for a bow or 1/5 of a yard?
*February 9, 2015*

**Public speaking**

I would say A.
*February 9, 2015*

**Math**

6/18 = 9/27 = 3/9 Can only find two others. I'll let you provide the reasoning.
*February 9, 2015*

**math**

A square, a specific type of rectangle, would give you the largest area.
*February 9, 2015*

**science**

Disagree, Google each alternative.
*February 9, 2015*

**math**

Weight losses not given.
*February 9, 2015*

**math**

I assume you are saying the area of the square box = 486. L^2 = 486 L = √486
*February 9, 2015*

**Math Probability Outcome**

It would help if you proofread your questions before you posted them. If you choose two socks, how do you get "2 pair of white socks? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the ...
*February 9, 2015*

**statistics**

mean, a particular measure of central tendency.
*February 8, 2015*

**stats**

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 "...
*February 8, 2015*

**STATS**

Z = (score-mean)/SD = (190-180)/17 = ?
*February 8, 2015*

**Math**

A) # $20 notes/total notes = ? B) Either-or probabilities are found by adding the individual probabilities. C) # $50 notes/total = ? D) 9/18 = ?
*February 8, 2015*

**English**

In today's society, many middle class people argue that they cannot build wealth because of wrong choices. This is a better statement of the thesis, but I don't know how you will be able to support it.
*February 7, 2015*

**math**

one ounce = 6 teaspoons 6/24 = x/6 Solve for x.
*February 7, 2015*

**stats**

P(2 blue balls) = 20/30 * 19/29 P(red ball third) = 10/28
*February 7, 2015*

**statistics**

Definitely right.
*February 6, 2015*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A. .8 * .7 = ? B. .2 * ? = .18
*February 6, 2015*

**Probability**

http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf
*February 6, 2015*

**Statistics HELP**

P(red in A) = 1/5 P(red in B) = 3/16 To compare, change to decimals.
*February 6, 2015*

**Statistics**

HH TT TH HT Four possibilities.
*February 6, 2015*

**Crime and Society**

What rates?
*February 6, 2015*

**Algebra**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Please put equation all on one line. 9x - y = 11 x + 3y = 23 Multiply first equation by 3. 27x - 3y = 33 Add second and third equation to ...
*February 5, 2015*

**college algebra**

Let x = miles. $20 +$.50x = $1.50x Solve for x, then substitute 30 for x.
*February 5, 2015*

**math**

5/30 = 1/6 Since 1/6 < 1/5, estimate slightly < 20%
*February 5, 2015*

**Chemistry? needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*February 5, 2015*

**Math**

290? 280? etc.
*February 5, 2015*

**statistic**

Have no idea of contents of Table 1. 1. No 2a. SEm = SD/√n = (√variance)/n 2b. Z = (score-mean)/SEm 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...
*February 5, 2015*

**math**

Let m = Mrs. Lee's age, then s = m - 26 m = 3(m-26) Solve for m.
*February 5, 2015*

**algebra**

x + y = 40 x - y = 6 Add the two equations and solve for x. Insert that value into one of the equations to find y.
*February 5, 2015*

**ENGLISH**

What is you question? The sentence is grammatically correct, but I can still talk with my mouth full.
*February 5, 2015*

**ENGLISH**

What is your question? Grammatically correct, but logically wrong.
*February 5, 2015*

**algebra**

What following? You cannot copy and paste here.
*February 5, 2015*

**Thank You everybody who helps us**

You are welcome.
*February 4, 2015*

**Human service**

If feedback is positive, keep doing what your are doing. If feedback is consistently negative, institute changes. If feedback is consistently positive, except for one or two individuals, try to determine if the negative feedback is due to idiosyncratic aspects of the ...
*February 4, 2015*

**statistics**

Lacking data. Z = (score-mean)/SD 2.84 = (score- 8.9)/SD What is the SD (standard deviation)?
*February 4, 2015*

**Science**

Agree.
*February 4, 2015*

**Anthropology**

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

**math**

What are your choices? dependent variable?
*February 4, 2015*

**English Check please**

Agree
*February 4, 2015*

**English check**

There is no mention of the Cyclops.
*February 4, 2015*

**English**

How can we help you?
*February 3, 2015*

**science**

Dendrites and cell body receive impulses from axons over the small gap, the synapse.
*February 2, 2015*

**health**

Disagree. What is being sent? In other words, what is moving?
*February 2, 2015*

**math**

I don't know which test you are using. Try this one. 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 ...
*February 2, 2015*

**Substitution**

A = 155 - S $2.50S + $4.00A = $492.50 Substitute 115-S for A in the second equation and solve for S. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
*February 1, 2015*

**statistics**

Cannot be answered unless the type of distribution is known — normal, positively skewed, negatively skewed.
*February 1, 2015*

**concept development**

Agree.
*February 1, 2015*

**Help with Psychology**

Disagree. What is the maximum value you can have for a correlation coefficient?
*February 1, 2015*

**math**

Since this is not my area of expertise, I searched Google under the key words "auto braking distance" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=auto+braking+distance&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
*January 31, 2015*

**psychology**

I feel overloaded with this many items. I agree with 1, 2, 4, and 5 but not 3.
*January 30, 2015*

**math**

Since I don't know what "IQR" indicates, I would go with the last choice.
*January 30, 2015*

**Language Arts**

Disagree. The image is growing smaller, but not the actual object itself.
*January 30, 2015*

**7th grade math**

I searched Google under the key words "venn diagram" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=venn+diagram&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more quickly, if you use ...
*January 30, 2015*

**math**

Cannot draw picture on these posts. 2 2/3 = 8/3 Divide by 4.
*January 29, 2015*

**Math**

the number of solutions?
*January 29, 2015*

**Math**

5W = L LW = 125 5W^2 = 125 Substitute 5W 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.
*January 29, 2015*

**Science**

Agree
*January 29, 2015*

**Algebra**

2(m/-3)-11=m/4 Solve for m, then n.
*January 29, 2015*

**Science**

Disagree with both.
*January 29, 2015*

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Why should Homeroom 102 take more than their half? However, if they do: 1/2 + (2/5 * 1/2) = ? .5 + (.4 * .5) = ?
*January 29, 2015*

**math**

(500 * 200)/(100*8) = ?
*January 28, 2015*

**math**

(70 - 25) = 3/5x Solve for x.
*January 28, 2015*

**math**

(3/4)x = 3 To solve for x, multiply both sides by 4/3.
*January 28, 2015*

**algebra**

Lacking diagram information.
*January 28, 2015*

**Algebra 1**

Isn't the 5 an exponent?
*January 28, 2015*

**math**

Use same process as in previous post. For your safety, I suggest that you do not use your full name in future. Irene is enough.
*January 28, 2015*

**math**

let x = # at $23, and y = # at $45. y = 210 - x 23x + 45y = 6150 Substitute 210-x for y in the second equation and solve for x. Insert that value into the first equation to solve for y. Check by putting both values into the second equation.
*January 28, 2015*

**math**

Use same process as indicated in your later post.
*January 28, 2015*

**Math**

A = B + 20 90 + A + B = 180 Substitute B+20 for A in the second equation and solve for B. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
*January 28, 2015*

**algebra**

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.
*January 28, 2015*

**Algebra I**

The values are correct, but what happened to the negative sign?
*January 28, 2015*

**Math**

x(x+9) = 360 x^2 + 9x - 360 = 0 360 = 5 * 2 * 3 * 3 * 2 * 2 Find combination of factors that will give you 9.
*January 28, 2015*

**math**

1, 2. Agree. 3. 118 ml 4. agree 5. 4.9 ml 6. 1 ml 7. .924 gr 8. 237 ml Make sure you are using the correct units.
*January 28, 2015*

**personal finance**

Sales tax?
*January 28, 2015*

**math-algebra**

m^6n
*January 28, 2015*