Monday

February 27, 2017
Total # Posts: 23,052

**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 related to the Z score. Conclusion would be related to level of significance you are using.

*September 25, 2016*

**Algebra**

2x + (x-3) = 42 Solve for x to get twins' age and subtract 3 for 3rd child.

*September 25, 2016*

**algebra**

Volume = w * h * L 18 = (5-2) * 1 * L Solve for L.

*September 25, 2016*

**math**

3x = x + 48 Solve for x.

*September 25, 2016*

**Math**

Cannot draw diagrams on these posts.

*September 25, 2016*

**Physics needs help**

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

*September 25, 2016*

**math**

A circle has no volume, however, its area = πr^2.

*September 25, 2016*

**math 6th grade ?**

It would help if you proofread your questions before you posted them. "13 4 feet wide" = 134, 13.4, 13feet 4 inches? Also lacking data. How much lumber did he buy? How big are DVD cases and paperback books?

*September 24, 2016*

**6th grade math**

Lacking data. How big are the shelves?

*September 24, 2016*

**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 24, 2016*

**Maths**

We do not have access to the figure. You cannot copy and past here.

*September 24, 2016*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "hydrogen bonding water molecule properties" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=hydrogen+bonding+water+molecule+properties&ie=UTF-8&oe=UTF-8...

*September 24, 2016*

**SCIENCE**

100kW/m^2

*September 24, 2016*

**Math**

https://www.google.com/search?client=safari&rls=en&q=graph+information+from+a+ratio+table&ie=UTF-8&oe=UTF-8&gws_rd=ssl

*September 23, 2016*

**Grammar**

What about commas? Thank you, John, Peter, Susan and Veronica, for being a part of the crew.

*September 23, 2016*

**algebra**

.5 + .5d = 7.5 Solve for d.

*September 23, 2016*

**Math**

The two end digits cannot be even because subtracting one from the other would be an even difference. Explore the odd choices. 123, 345, 567, 789

*September 23, 2016*

**Algebra**

Multiply each term in the second parenthesis by -1.

*September 22, 2016*

**Algebra**

-4+c

*September 22, 2016*

**Statistics**

Z = (score-mean)/SD SD = √variance 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. Multiply by 100.

*September 22, 2016*

**statistics**

Cannot do table on these posts.

*September 22, 2016*

**math**

300x + 250x = 900 Solve for x.

*September 22, 2016*

**math algebra**

See following post.

*September 22, 2016*

**math algebra**

16-17 minutes

*September 22, 2016*

**Stats.**

Neither probability = 0. Weight 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. Food 24 - 10 = 14 (15-10)/14 = ?

*September 21, 2016*

**algebra**

In the first pair, none match, because if x is negative, y will be negative. Did you miss a negative sign? The second problem is wrong. Do what Lily suggests.

*September 21, 2016*

**Science**

Sit different distances from the fulcrum.

*September 21, 2016*

**Science**

A. Have the beaker standing on a table. B. Wash the toes with water or something that will neutralize solution A, being careful to avoid the glass particles.

*September 21, 2016*

**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.

*September 21, 2016*

**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 21, 2016*

**Math**

1/2 + 3/8 = 4/8 + 3/8 = ?

*September 21, 2016*

**8th grade math-exponents**

I don't. I still get: (x/2)^7/(x/2)^6 = x/2 If you do not have a typo, there might be a typo in the text answers. Ask your teacher.

*September 21, 2016*

**8th grade math-exponents**

Since they are all the same, let x represent x/2. Online "^" is used to indicate an exponent, e.g., x^2 = x squared (x^3 * x^4)/(x^3)^2 When multiplying/dividing, exponents are added/subtracted respectively. (x^3 * x^4) = x^7 (x^3)^2 = x^6 Do you have typos?

*September 21, 2016*

**Algebra 2**

Z = (score-mean)/SD Z = (230-240)/4.8 = -2.08 Use the same equation for the second score.

*September 21, 2016*

**math**

Necesita hacer su pregunta en inglés.

*September 20, 2016*

**Math**

do the calculations

*September 20, 2016*

**Science**

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

*September 20, 2016*

**math (?)**

Typo? How can a digit be 30 times any other digit?

*September 20, 2016*

**Math**

How do you want it rearranged?

*September 20, 2016*

**Maths**

42/7 = 6 2L = 3*6 = 18 2W = 4*6 = 24 Since P = 2L + 2W, each side will half of the above values.

*September 20, 2016*

**Psychology**

Agree, "making excuses" is rationalization.

*September 20, 2016*

**English**

I, his, him and he are pronouns. You missed some. Go over it again.

*September 20, 2016*

**Math**

You only have five digits. Assuming some can be repeated without using decimals: Largest = 8,885,320 Smallest 2,000,358

*September 20, 2016*

**Statistics**

mean = ∑x/n mean * N = ∑x Men ∑x = 20*178 = 3560 Women ∑x = 30*164 = 4920 Combined = (3560+4920)/50 = ?

*September 20, 2016*

**Psychology 101**

success

*September 19, 2016*

**Math (?)**

Have ? Left.

*September 19, 2016*

**math**

typos? (2700-1200)x = 30

*September 19, 2016*

**English**

I assume it is study time. It indicates how much time you need to allocate per week, month and semester. How much time will you set aside per each of those time intervals?

*September 19, 2016*

**math**

Since we don't know your daily activities, we cannot help you.

*September 19, 2016*

**Math**

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

*September 19, 2016*

**Math**

(215.5-133.25)/215.5 = .38167 = 38% Do the same process for the second problem.

*September 19, 2016*

**English grammar**

"Talked" if event is past, and "will talk" if you expect it in the future.

*September 19, 2016*

**Health**

Which does not have a learning component?

*September 19, 2016*

**algebra - theory of numbers**

You need to clarify your question.

*September 19, 2016*

**math**

3d + 3t = 9 3d + 2t = 8 Subtract second equation from first, then multiply by 5.

*September 19, 2016*

**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 between the two values for the Z scores.

*September 18, 2016*

**Maths**

X + Y + Z = 1750 x = 4Y Y = 2Y 4Y + Y + 2Y = 1750 However, that does not come out exactly to whole numbers. Do you have any typos? It would seem that the zero is extraneous.

*September 18, 2016*

**Language Arts**

The Inuit go fishing in frail skin canoes called kayaks.

*September 18, 2016*

**psychology**

deviate, innovate, criticize, dissent?

*September 18, 2016*

**Math**

Regardless of its length, the minute hand moves 360 degrees in one hour (60 minutes).

*September 18, 2016*

**value**

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

*September 18, 2016*

**Math**

W = T + 6 Area = 1/2 WT Substitute T+6 for W in the second equation and solve for T. Insert that value into the first equation to solve for W. Check by putting both values into the second equation.

*September 18, 2016*

**math**

Divide 576 by 9, then multiply by 4 for muffins and 5 for cookies. 256 muffins 320 cookies

*September 18, 2016*

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. a^2 + b^2 = c^2 Cannot find x unless already know value of a and c. You only know c.

*September 18, 2016*

**math- study question for final**

This is what I would do. Z = (score-mean)/SEm SEm = SD/√n P ≤ .05 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. How does it compare?

*September 17, 2016*

**Algebra**

L = S + 47 L = 6S - 3 Substitute S+47 for L in the second equation and solve for L. Insert that value into the first equation to solve for S. Check by putting both values into the second equation.

*September 16, 2016*

**Statistic**

You may have an answer, but you don't even indicate the question.

*September 16, 2016*

**statistics**

SEm (standard error of the mean) = SD/√n

*September 16, 2016*

**math**

1. disagree 2. agree 3. r = d/t 4. agree

*September 15, 2016*

**math geometry**

L = 2w + 12 L * w = 80 Substitute 2w+12 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.

*September 15, 2016*

**Math**

1. disagree 2. agree 3. agree

*September 15, 2016*

**Math**

The first is the absolute value, regardless of the sign. The second is negative.

*September 15, 2016*

**stats**

Z = (score-mean)/SEm SEm = SD/√n SD = √variance Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for each and the Z score. Insert into above equation.

*September 15, 2016*

**aps rk puram .math**

There are only three possibilities — 123, 246, 369. Which fits?

*September 15, 2016*

**math**

How many edges does a cube have? Multiply that number by (18-10).

*September 15, 2016*

**Math**

a. 180/36, 252/36 b. 252/180 c. 10(252/180) No diagram.

*September 15, 2016*

**statistics**

Probability answer never > 1. If Z = 2, P > 2 = .0228

*September 15, 2016*

**math**

It would help if you proofread your questions before you posted them. Level of significance? 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/...

*September 15, 2016*

**stats**

Grade points times credit hours divided by total credit hours. [(5*4) + (4*3) + (3*1) + (2*3) + (1*4)]/15 = ?

*September 15, 2016*

**science**

Holland? What are your choices?

*September 15, 2016*

**Math**

Cannot draw diagrams here.

*September 14, 2016*

**maths**

q = a + 15 3a + 2q = 3 1/8 Substitute a+15 for q in the second equation and solve for a.

*September 14, 2016*

**Math**

You are welcome.

*September 14, 2016*

**Math**

For every 3 parts of blue, you need 4 parts of yellow.

*September 14, 2016*

**Math**

Area = 1/2 height * base 48 = 1/2 height * 12 Solve for height.

*September 14, 2016*

**math**

Circumference = π d Convert to cm. Area = 10 circumference

*September 14, 2016*

**Statistics**

Variable = number of children per family Can a family have a half of a child? Possible values for a family = 1, 2, 3, 4....

*September 13, 2016*

**algebra**

1.4x + .25 = 1.99 Solve for x.

*September 13, 2016*

**math**

j = 8/5m j - m = 390 Substitute 8/5m for j in the second equation and solve for m. Insert that value into the first equation to solve for j. Check by putting both values into the second equation.

*September 13, 2016*

**Math HELP!**

3/4 > -5/6 -1 3/4 < 3/4 2 3/4 > 2 4/6

*September 13, 2016*

**Science (?)**

Need more data. 100,000 km per what time unit? Sometimes Earth is close to Mars, when it's making a pass, and other times it's far away, at the other side of the track. The minimum distance from the Earth to Mars is about 54.6 million kilometers. The farthest apart ...

*September 13, 2016*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "types of blood parasites" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=blood+parasites&ie=UTF-8&oe=UTF-8&gws_rd=ssl#q=types+of+blood+parasites In the...

*September 13, 2016*

**Statistics (?)**

Lack of data. What is your question? Assuming n stands for number in sample and S indicates standard deviation, it would be nice to know the mean for each group.

*September 13, 2016*

**biology**

disagree with last two answers.

*September 13, 2016*

**MATH**

Es mejor escribir en inglés.

*September 12, 2016*

**MATH(?)**

No numeros aqui. No puede copia o goma aqui.

*September 12, 2016*

**Psychology**

How is this psychology?

*September 12, 2016*