Tuesday

December 1, 2015
Total # Posts: 20,802

**Science**

The pH scale is a measure of the hydrogen ion concentration. It spans from 0 to 14 with the middle point (pH 7) being neutral (neither acidic or basic). Any pH number greater than 7 is considered a base and any pH number less than 7 is considered an acid.
*October 30, 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.
*October 30, 2015*

**Science**

Give an example.
*October 30, 2015*

**Statistics**

No scores shown. a) What is "Sturges' formula"? b) 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. ...
*October 30, 2015*

**Math**

Correct except for 5.
*October 29, 2015*

**biology**

Cell membrane
*October 29, 2015*

**science**

What list?
*October 29, 2015*

**Biology**

Goggle each term.
*October 29, 2015*

**Biology**

What ideas?
*October 29, 2015*

**social**

Why are two choices identical?
*October 29, 2015*

**math**

L = 2W-7 L * W = 165 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.
*October 29, 2015*

**Math**

Pythagorean Theorem a^2 + b^2 = Hyp^2 16 + 25 ≠ 36 225 + 256 ≠ 625
*October 29, 2015*

**math**

30.6 - 30.6/3 = ?
*October 29, 2015*

**Statistics**

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. Either-or probabilities are found by adding the individual probabilities.
*October 29, 2015*

**Human Growth**

A refers to monozygotic twins.
*October 29, 2015*

**Statistics HELP!!**

Try human heights and heights of a basketball team.
*October 28, 2015*

**math**

20.00 - 5.50 - 2.60 = ?
*October 28, 2015*

**Math Can Someone explain me about this question**

All you need to saw off is 2' 8" inches to make the board that long. However: 4 yards = 12' 11' 12" - 2' 8" = 9' 4"
*October 28, 2015*

**statistics**

Since this is not my area of expertise, I searched Google under the key words "difference between the coefficient of determination and residuals" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=difference+between+the+coefficient+of...
*October 28, 2015*

**MATH help**

Multiply both sides by 4. x - 20 = 24 Take it from here.
*October 28, 2015*

**math**

Subtract 12 from both sides, then multiply by -1.
*October 28, 2015*

**Math**

Yes, if you math is correct.
*October 28, 2015*

**Science**

A half plus a half = a whole A whole plus a whole gives you what?
*October 28, 2015*

**Statistics**

Either-or probabilities are found by adding the individual probabilities. Do that for failure rates, then subtract from 1.
*October 28, 2015*

**11th grade math**

When multiplying/dividing, exponents are added/subtracted respectively. y^(a-b)
*October 28, 2015*

**11th grade math**

When multiplying/dividing, exponents are added/subtracted respectively. y^a-b
*October 28, 2015*

**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. See later post.
*October 28, 2015*

**Pertunia msimango**

It might help to ask this question of your high school/college counselor, who can ask the above and other questions and give you interest tests to help you determine possible avenues.
*October 28, 2015*

**Math**

√20 = 4.4721
*October 28, 2015*

**MAth**

1 and 4 are correct. 2. Add 8 to both sides. 3. Subtract 5 from both sides.
*October 28, 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.
*October 28, 2015*

**Behavioral Statistics 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.
*October 28, 2015*

**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.
*October 27, 2015*

**Behavioral Statistics**

I answered this previously. We need to get 25% of the obtained scores. You are assuming that the scores ranged close to 1-100. That is typically NOT the case. What if all the scores were above 75? Check with one of the tests taken in any of your classes. What would the range ...
*October 27, 2015*

**math**

Do you mean (√23)/3 or √(23/3)? Either way, these answers do not apply as you have them written. Typos?
*October 27, 2015*

**Math**

2 * 2 = 4 Can draw pictures on these posts.
*October 27, 2015*

**Geometry**

The other endpoint will be the same distance from the midpoint as the known endpoint.
*October 27, 2015*

**Maths**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Cannot sketch on these posts. Also, do you have a typo in your equation?
*October 27, 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.
*October 27, 2015*

**algebra**

Multiply both sides by 6/5 5/6x * 6/5 = 25 (6/5) x = 30
*October 27, 2015*

**math**

74 + 12(52) = ?
*October 27, 2015*

**math**

3(2+1) = 3 * 3 = ?
*October 27, 2015*

**Algebra**

4x - 4b = x Subtract 4x from both sides. -4b = -3x Divide both sides by -3.
*October 27, 2015*

**business 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 related to the Z score. Is that less than the level of significance you are using?
*October 27, 2015*

**Algebraic Expressions**

I'm not sure what you are asking. 1/3B = $13/hr(?)
*October 27, 2015*

**Multi-cultural Psychology**

It sounds best.
*October 26, 2015*

**Math please check**

agree.
*October 26, 2015*

**Spanish**

c, c, enseño, señor. tilde =n and alt, followed by typing the n in.
*October 26, 2015*

**Spanish**

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. c
*October 26, 2015*

**5th grade math**

V = 4D 5D + 3V = 3213 Substitute 4D for V in the second equation and solve for D. Insert that value into the first equation to solve for V. Check by putting both values into the second equation. Add D and V.
*October 26, 2015*

**science**

https://www.google.com/search?client=safari&rls=en&q=refraction&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*October 26, 2015*

**Science**

2. I'm confused too. I would pick A or C. B and D are identical too. Either you have typos or bad question. 3. Right 4. Disagree. If dimples are dominant and one parent is homozygous, the child will always get a dominant gene. 5. What is B? Disagree. A would lead to all ...
*October 26, 2015*

**Treasure!**

of what?
*October 26, 2015*

**Algebra 2**

y = 11 - 2x 3x - 4y = 11 Substitute 11-2x 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.
*October 26, 2015*

**Trends**

Why would you care? Does it effect how you feel about yourself? http://drdavespsychologypage.homestead.com/Looking-Glass_Self.pdf
*October 26, 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.
*October 26, 2015*

**Math- word prolems**

A square will give you the maximum area. Do the two areas need to be the same size?
*October 26, 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. However, I will give you a start. Z = (score-mean)/SD Find table in the back of your ...
*October 26, 2015*

**Behavioral Statistics**

What if nobody scored below 75?
*October 25, 2015*

**Algebra 1**

It doesn't give you an extra foot on each side, but it does add to the total dimensions and area. A square is a rectangle with equal sides. Try my method. Two sides would be 168, and the side across from river would be 164 of fencing plus a 4 foot gate.
*October 25, 2015*

**Algebra 1**

Get the closest to a square. (500 +4)/3 = length of side Side * side = ?
*October 25, 2015*

**Biology Help PLEASE**

You are right.
*October 25, 2015*

**Biology Answer Check**

Use same name when you post.
*October 25, 2015*

**Biology Answer Check**

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 later post.
*October 25, 2015*

**Biology Answer Check !!!!**

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. Use same name. You are right.
*October 25, 2015*

**science **

With homozygous T parent, won't there always be a T in the genotype? Electrons are not in nucleus. https://www.google.com/search?client=safari&rls=en&q=mitochondria+plasma+membrane&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*October 25, 2015*

**science**

agree
*October 25, 2015*

**math**

Disagree. ($1570-$400)/$100 = ? Disagree. $40 + (790-600).25 = ? Agree.
*October 25, 2015*

**math**

Agree.
*October 25, 2015*

**math**

Disagree. See previous post.
*October 25, 2015*

**math**

$3*1.7 + $3.50*.5 = ?
*October 25, 2015*

**life science**

What organisms?
*October 25, 2015*

**math**

Need more data.
*October 25, 2015*

**4 grade math**

20 * 5 = ?
*October 24, 2015*

**Math🤓**

If the pizza is cut into eight pieces, how could he eat 3/7? Did he part of one piece? 1 - 3/7 = 7/7 - 3/7 = ?
*October 24, 2015*

**Health**

What project?
*October 24, 2015*

**kon**

If you print it out.
*October 24, 2015*

**English**

Images would not be needed, if the topic was abstract, like liberty or compassion.
*October 24, 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.
*October 24, 2015*

**science**

disagree.
*October 23, 2015*

**Human Growth**

B is the best guess.
*October 23, 2015*

**Statistics**

More data needed. What scenario?
*October 23, 2015*

**math**

(8762 * 16)/6150 = ?
*October 22, 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.
*October 21, 2015*

**Algebra 1**

1 m/h = 88 f/m
*October 21, 2015*

**algebra**

4(n+3) = 15-5n 4n - 12 = 15 - 5n Combine like terms to solve.
*October 21, 2015*

**Math**

y=2x-4 6x-12=3y Substitute 2x-4 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.
*October 20, 2015*

**math**

4 = 4[6-(2+3)]
*October 20, 2015*

**math**

Agree with Mom.
*October 20, 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.
*October 20, 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.
*October 20, 2015*

**Math -real numbers**

I agree with D.
*October 20, 2015*

**SCIENCE HELP ASAP**

1. C 2. C Sí, Sí, Señor.
*October 20, 2015*

**science**

More data needed.
*October 20, 2015*

**Math**

$9/week = approx. $36 per month
*October 20, 2015*

**math**

1. Neither. 10% of $100 = $10 2. 10% of $110 = $11 3. Leroi will have more.
*October 20, 2015*

**science**

Disagree with both answers.
*October 19, 2015*

**vocab**

What answers?
*October 19, 2015*

**algebra**

-5x/3 + 8 = 13 Multiply by 3. -5x + 24 = 39 Complete solution.
*October 19, 2015*

**algebra**

Middle integer = x, then others are x-1 and x+1. (x-1) + x + (x+1) = 54 Solve for x.
*October 19, 2015*