Wednesday

July 29, 2015

July 29, 2015

Total # Posts: 20,058

**science**

What is your reaction time?
*September 6, 2014*

**Math**

How many balls does she have originally?
*September 6, 2014*

**visual arts**

Since this is not my area of expertise, I searched Google under the key words "7 principles of design" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=7+principles+of+design&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
*September 6, 2014*

**Chemistry needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*September 6, 2014*

**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 "...
*September 6, 2014*

**Business Math**

x - .3x = $72.09
*September 5, 2014*

**statistics**

In a normal distribution, mean, mode and median have same value. Median is 50th percentile, so what is the Z score at the mean?
*September 5, 2014*

**biology**

Since this is not my area of expertise, I searched Google under the key words "anthocyanins light sugar" to get these possible sources https://www.google.com/search?client=safari&rls=en&q=anthocyanins+light+sugar&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can ...
*September 5, 2014*

**spanish**

If you are looking for the English equivalent, high school.
*September 4, 2014*

**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. Probability > .50.
*September 4, 2014*

**Chemistry needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*September 3, 2014*

**History**

Pair trust/mistrust bars with different colors. Do this for each area.
*September 3, 2014*

**math**

Looks like Mojave was much less than the others. Do you want to make a pie chart or do X^2 (Chi square) analysis?
*September 3, 2014*

**math**

What table? August?
*September 3, 2014*

**math**

8,924,001
*September 2, 2014*

**math**

Multiply top equation by 2. 2x + 4y = 14 3x - 4y = 6 Add the two equations. 5x = 20 Solve for x, then y.
*September 2, 2014*

**math for praaaaaaaajiiii**

Unsure of what you are asking. √39 = 6.245
*September 2, 2014*

**math**

What numbers?
*September 2, 2014*

**math**

It would help if you proofread your questions before you posted them. I assume you mean 4.5% commission. 148,500 * .045 = ?
*September 2, 2014*

**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 2, 2014*

**math**

A. $25.98 + 14.99 + 2.46 = ? B. $50 - ? = ??
*September 2, 2014*

**Spanish**

I prefer "¿Qué pasa?", but I don't know if that would be formal. You might try "¿Cómo lo pasa Vd?"
*September 1, 2014*

**math**

L = 3W - 10 LW = (3W-10)W = 3W^2 - 10W = 77 3W^2 - 10W - 77 = 0 Solve quadratic equation for W, then L.
*September 1, 2014*

**math**

(68/12)/8 = T/21 = 5.67/8 Solve for T in feet.
*September 1, 2014*

**Psychology (Jill)**

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. Second, you are comparing naturalistic observation and being participant ...
*September 1, 2014*

**English**

2. in the hallway 4. Trash on the flower pots? 5. Won't the team win first place? 7. What is a magic block? With all the cleaning, are you trying for a job as janitor?
*September 1, 2014*

**statistics**

Work it from the other end, so you are using fewer values. You are less likely to make mistakes. A. 100(1.00 - .019) = ? B. 100(1.00 - .193) = ?
*August 30, 2014*

**Math**

(55min. * 7 classes * 5 days)/(60 min./hour) = ?
*August 29, 2014*

**English**

1. The visit. Elderly can be used to modify both.
*August 29, 2014*

**English**

A postcard is an open-faced correspondence, while a letter can be much longer and is typically enclosed in an envelope, so #2 does not mean #1. Delete "take" in first sentence. It would be more specific to indicate the topic of your speech and the type of conference...
*August 29, 2014*

**Math**

Answer what? Need to include original question.
*August 29, 2014*

**math**

6 is one more than 5, and they sum to 11.
*August 29, 2014*

**science**

It would help if you proofread your questions before you posted them. What is "ch3cn"?
*August 28, 2014*

**math**

14.75/29.50 = .5 Multiply by 100 for the percentage.
*August 28, 2014*

**Science**

Sorry, I misread. It said incorrectly. Agree.
*August 28, 2014*

**Science**

Disagree.
*August 28, 2014*

**science**

Volcanic eruption?
*August 28, 2014*

**Science**

Again I goofed. B is right.
*August 28, 2014*

**Science**

Disagree, beaker does not record data
*August 28, 2014*

**Science**

Agree with A. What does that have to do with math?
*August 28, 2014*

**Business statistics**

Assuming a normal distribution, it is symmetrical. So, if one half has mean of 8 + 2, the other half has mean of 8 - 2.
*August 28, 2014*

**Business statistics**

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.
*August 28, 2014*

**Biology**

A, C is dependent variable
*August 27, 2014*

**Math**

477/10 = ? (round to whole number)
*August 27, 2014*

**Biology**

No, you are trying to see if changes in the independent variable cause changes in the dependent variable. If other variables are not held constant, they might be factors in causing dependent variable changes rather than or in addition to the independent variable.
*August 27, 2014*

**7th grade Science**

Manipulate/independent variable would be the number of paper clips, which determine the weight of the plane. Responding/dependent variable is the distance flown. Starting line and the same strength/style of the throw would be controls.
*August 27, 2014*

**algebra**

What is your question? Guessing what you want, s = 1 1/5c = 1.2c
*August 27, 2014*

**Alegbra**

Isn't it influenced by who gets the remaining pizza?
*August 27, 2014*

**algebra**

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 I'll let you do the ...
*August 27, 2014*

**Math for college readiness**

4x^2v^4
*August 27, 2014*

**math**

When multiplying, add exponents. y^-6 = 1/y^6
*August 27, 2014*

**algebra**

If the two sides are equal, then: 3x-1 = 2x+2 Solve for x and then add the three sides.
*August 27, 2014*

**math**

Are they saying that you have divided by 1000? 913,256/1000 = 913.256
*August 26, 2014*

**American Government**

I would say B.
*August 25, 2014*

**statistics**

With your limited data, I would say .2 * 50 = 10
*August 25, 2014*

**algebra**

What first equation? -10(-10x-10y) = 100x + 100y
*August 25, 2014*

**Math**

In relation to Hiba? 6/5 and 3/2 respectively.
*August 25, 2014*

**biology**

https://www.google.com/search?client=safari&rls=en&q=anonyms&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*August 25, 2014*

**math**

If the two digits are in their correct position, then the remaining two would be 1/10 * 1/10 = 1/100
*August 25, 2014*

**science**

Since this is not my area of expertise, I searched Google under the key words "Mirrors do not refract" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=Mirrors+do+not+refract&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find ...
*August 25, 2014*

**Mathematoics**

5/15 + 6/15 = 11/15 1 - 11/15 = 4/15 4/15 * (1 -1/4) = 3/15 = 1/5
*August 24, 2014*

**psychology**

People concentrate on the emotions rather than the task at hand, so "I can't" becomes a self-fulfilling prophecy.
*August 24, 2014*

**mat/156**

A) p B) Either-or probabilities are found by adding the individual probabilities. p + c C) no see C, sí ?
*August 23, 2014*

**Algebra**

agree.
*August 23, 2014*

**stat**

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...
*August 23, 2014*

**stat**

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. Is it significant?
*August 23, 2014*

**Science**

Agree.
*August 22, 2014*

**Spanish**

evoking a past age
*August 22, 2014*

**math**

S + L + J = 41 L + 5 = J L - 6 = S (L-6) + L + (L+5) = 41 Solve for L, then S and J.
*August 22, 2014*

**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 the Z score. Multiply by 15.
*August 22, 2014*

**statistics**

a. average of April sample b. weight c. No data given
*August 22, 2014*

**Science**

Agree.
*August 21, 2014*

**Sociology**

This question is asking what YOU think.
*August 21, 2014*

**Sociology**

They both explain different aspects of societies. See http://drdavespsychologypage.homestead.com/Decision_Trap.pdf
*August 21, 2014*

**Algebra 1**

($1050 - $800)/7months = ?
*August 21, 2014*

**algebra**

Add the two equations. 12x = 6 Solve for x and then insert that value into one of the equation to find y. To check, insert x value into the other equation.
*August 21, 2014*

**Health**

Yes. At least that happens with my scale.
*August 21, 2014*

**math algebra**

2/100 * A = p
*August 21, 2014*

**math algebra**

6 * 1/2 = 3 hours
*August 21, 2014*

**math**

C = πd I don't see how the value for the circumference and diameter could both be 7. Do you have a typo?
*August 21, 2014*

**math**

Something does not make sense. If the boat is full while paying 10, wouldn't adding 3 students overload the boat? Also some data is missing. What is the total charge for the boat?
*August 21, 2014*

**math**

Let x = son's age, and y = father's age y = 7x y-2 = 13(x-2) = 13x - 26 Substitute 7x for y in the second equation. 7x - 2 = 13x - 26 Solve for x, then put that value into first equation. Check by putting both values into the second equation.
*August 21, 2014*

**maths**

A = 1/2bh 1.84 = 1/2b(1.6) Solve for b.
*August 21, 2014*

**maths**

A = 1/2bh 1/3 = x/A Insert values to solve for A, then x.
*August 21, 2014*

**maths**

To conceptualize the order, convert to decimals.
*August 21, 2014*

**Physics needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*August 21, 2014*

**math**

8/16575 = .000483
*August 20, 2014*

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. For subsequent picks, the deck lacks one more card. 4/52 * 4/51 * 4/50 = ?
*August 20, 2014*

**math**

You don't indicate whether the remaining persons own bonds or neither bonds or stocks. If the former, I agree.
*August 20, 2014*

**math**

3x + 2(-2) = -7 Multiply. 3x - 4 = -7 Add 4 to both sides. 3x = -3 Divide by 3. x = -1
*August 20, 2014*

**Math**

Since it is two-tailed, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05 rather than .10) and insert its Z score in the equation below. 90% = mean ± 1.645 SEm SEm = ...
*August 20, 2014*

**math**

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 each Z score.
*August 20, 2014*

**biology**

Yes, both do reproduce.
*August 19, 2014*

**Science**

agree.
*August 19, 2014*

**statistics**

The expected number would be 41/75 * 100 = 55, but I don't see data that would allow me to estimate a significant difference from that value.
*August 19, 2014*

**math (?)**

Lacking sufficient data.
*August 19, 2014*

**statistics (?)**

Where is the data?
*August 19, 2014*

**statistics**

I assume that you are talking about the standard error of the mean. SEm = SD/√n
*August 18, 2014*

**Health**

Agree.
*August 18, 2014*

**Health**

Agree.
*August 18, 2014*