Saturday

April 30, 2016
Total # Posts: 21,595

**math**

(23.5^2)/64 = ?
*December 25, 2015*

**maths**

What is your question? I assume: 3x^3 - 2x^2 - 9x + 9
*December 25, 2015*

**Human growth**

yes
*December 24, 2015*

**Statistics**

How many squares do you have in your Chi-square?
*December 23, 2015*

**Statistics**

Use the Chi-square (X^2) method. X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency. ∑ = sum of all the cells. E = (column total * row total)/grand total df = n - 1, where n = number of cells Look up value in X^2 table in the back of your ...
*December 23, 2015*

**Math**

If the pennant is a right triangle, you only need one. The theorem does not apply, unless you are concerned with the length of sides or hypotenuse.
*December 22, 2015*

**Math**

The Pythagorean Theorem applies only to right triangles. Will your pennant be a right triangle? A pennant is typically an isosceles triangle. Can you construct an isosceles triangle from a group of right triangles?
*December 22, 2015*

**statistics**

A. 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 (.04) and its Z score. Insert Z into above equation and solve for score.
*December 22, 2015*

**math**

w - 1 = b r = w + 2 r + w + b = 28 (w+2)+ w + (w-1) = 28 Solve for w, then r and b.
*December 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.
*December 19, 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.
*December 19, 2015*

**math**

m = 2s (m-10) = 4(s-10) Substitute 2s for m in the second equation and solve for s.
*December 19, 2015*

**Language (?)**

What novel?
*December 18, 2015*

**science**

Mother would have to be BO, so child has a chance of A phenotype. Use a Punnett Square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl Since hemophilia is an X-linked gene, what is the chance of getting the hemophila gene from ...
*December 18, 2015*

**english**

When Not to Use Commas with Who and Which There is often confusion about when to use commas with who and which. Unfortunately, there is no simple rule. Sometimes there should be commas and sometimes there should not. The rule is: When the information provided by the clause is ...
*December 17, 2015*

**science help**

Shouldn't that be done BEFORE severe weather occurs?
*December 17, 2015*

**Science**

1. d 2. b 3. c 4. b
*December 17, 2015*

**Biology**

No figure. Cannot copy and paste here.
*December 17, 2015*

**Biology**

Right!
*December 17, 2015*

**Biology**

No, acidic is below 7.
*December 17, 2015*

**Statistics**

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.
*December 17, 2015*

**Algebra 1**

He's hungry? Lack Data.
*December 17, 2015*

**math**

5.4/810(converted to feet) = ? 1m = 3.28 feet
*December 17, 2015*

**Math**

No figures shown. Cannot copy and paste here.
*December 17, 2015*

**math**

15/5 = 3 (15-3) + 12 = ?
*December 17, 2015*

**math**

What is your question(s)?
*December 17, 2015*

**Statistics**

Histogram would also be normally distributed. How many modes does a normal distribution have? 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...
*December 16, 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 (.90) and its Z score. Insert data into equation and solve for score.
*December 16, 2015*

**Statistics**

It would help if you proofread your questions before you posted them. Have no data on ovens. 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/...
*December 16, 2015*

**science help PLS**

Although this is not my area of expertise, I would choose larger.
*December 16, 2015*

**science**

http://www.childrensheartinstitute.org/content/blood-flow-diagram.html https://www.google.com/search?q=spine+joints+anatomy&client=safari&rls=en&tbm=isch&imgil=RGwtYIvv8IITYM%253A%253BPeT0NG0OXkL7nM%253Bhttp%25253A%25252F%25252Fwww.agingspinecenter.com%25252Fcontent%...
*December 16, 2015*

**S.S**

No following. Cannot copy and paste here.
*December 16, 2015*

**Math (Statistics)**

(1-.81)21 = ?
*December 14, 2015*

**Science**

Which would be needed for a predator rather than the prey?
*December 14, 2015*

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 12/50 * (12-1)/(50-1) * (12-2)/(50-2) = ?
*December 13, 2015*

**probability distribution**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Do you mean "no" red balls or number of red balls?
*December 13, 2015*

**Biology**

Assuming that the DNA changes effect phenotype and/or behavior (some do not), your assumption is correct. No clarification necessary.
*December 13, 2015*

**Biology**

The endocrine system refers to the collection of glands of an organism that secrete hormones directly into the circulatory system to be carried towards distant target organs. Since the hypothalamus also secretes hormones, I would pick B.
*December 13, 2015*

**math**

3G + 3 = M = 48 Solve for G.
*December 13, 2015*

**statistics**

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

**tRNA**

Since this is not my area of expertise, I searched Google under the key words "tRNA" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=tRNA&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more ...
*December 10, 2015*

**Science**

It would help if you proofread your questions before you posted them. 1a same as 1b, 1c same as 1d. Saturn revolves around the Sun in 30 hours? 2D, 4A, 5D, 6B, 7D, 8A
*December 10, 2015*

**Science**

What is the context of this picture? Where is it in relation to the textual material?
*December 10, 2015*

**Comptuer Science**

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.
*December 9, 2015*

**geometry**

What is your question?
*December 9, 2015*

**probability**

If multiplication is right for first question, I agree. Second question not completely stated. if for 2 red and either blue or green, then it is right.
*December 9, 2015*

**math**

One side is y^2. There are six sides. Take it from there.
*December 9, 2015*

**math3, probability and statistics**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. If x = 5, I don't see how any of the other equations are valid (e.g., x^5= 10).
*December 9, 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 related to the Z score. Is it greater or smaller than .05?
*December 9, 2015*

**math**

1.2x = 40 Solve for x.
*December 8, 2015*

**Research**

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the response or measure of results.
*December 8, 2015*

**statistics help**

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.
*December 8, 2015*

**Help with College Stat class**

Typical significance level is p ≤ .05.
*December 7, 2015*

**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. Agree.
*December 7, 2015*

**math**

Need specific problem as example.
*December 7, 2015*

**HELP**

These articles might also help. http://drdavespsychologypage.homestead.com/Be_Here_Now_.pdf http://drdavespsychologypage.homestead.com/Learning_Requirements.pdf http://drdavespsychologypage.homestead.com/Learning_Hints.pdf http://drdavespsychologypage.homestead.com/...
*December 7, 2015*

**Algebra 2**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared 3^4 - 6(3^3) - 4(3^2) - 18 - 2 = ?
*December 7, 2015*

**Math**

The sex ratio at birth worldwide is commonly thought to be 107 boys to 100 girls, although this value is subject to debate in the scientific community. The sex ratio for the entire world population is 101 males to 100 females. Order of birth bgg gbg ggb gbb bgb bbg ggg bbb
*December 7, 2015*

**Math**

Infinity minus one?
*December 7, 2015*

**Science plz help its really inportant**

Nucleus has heredity factors and is largest organelle.
*December 7, 2015*

**statistics**

It would help if you proofread your questions before you posted them. What is a "bidge cad"?
*December 7, 2015*

**Math**

The ones where you designate an answer are all correct. Give your best answer for the remainder.
*December 7, 2015*

**maths**

It would help if you proofread your questions before you posted them.
*December 7, 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.
*December 7, 2015*

**Math**

To differ by 54 one must be relatively high and the other low and they need to be even numbers.
*December 7, 2015*

**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 (±.005) and the Z score. Insert data into first equation to solve.
*December 7, 2015*

**Psychology**

First, do you see sweating as a stimulus or response? Second, is it something that has to be learned (conditioned)?
*December 6, 2015*

**Science**

Gravity on the moon is about 17% of earth's gravity.
*December 6, 2015*

**Math**

11 + .18m = 18 + .13m Solve for m, then substitute value for m on either side.
*December 6, 2015*

**Science**

The moons gravity is approximately 17% that of earth.
*December 6, 2015*

**Math - age problem**

L - 1 = 3(J - 1) L + 2 = 2(J +2) = 2J + 4 L = 2J + 2 Substitute 2J + 2 for L in the first equation and solve for J. Insert that value into the last equation to solve for L. Check by putting both values into the first equation.
*December 6, 2015*

**math**

5.665, 5.674
*December 6, 2015*

**Maths**

With range = 8 one of the missing numbers is 5 or 14. Mean = ∑x/n (5+6+11+9+7+8+13+x)/8 = 9 Solve for x. If necessary, try with 14.
*December 6, 2015*

**Biology**

Since this is not my area of expertise, I searched Google under the key words "reproductive cycle of pines" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=reproductive+cycle+of+pines&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you...
*December 6, 2015*

**Science**

Total mass/ mass of one bag = number of bags
*December 6, 2015*

**math**

What is your question?
*December 5, 2015*

**statistics**

Ho: mean = 1400 Ha: mean < 1400 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.
*December 5, 2015*

**stat**

90% = mean ± Z (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 (p = ±.05) and its Z score. Insert data into first equation.
*December 5, 2015*

**Biology**

D, D, C
*December 5, 2015*

**Math please helppp**

No Polygon A. Cannot copy and paste here.
*December 4, 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 related to the Z score.
*December 4, 2015*

**Opinion Question**

In many cases, technology allows us to exceed our limitations. Our strength is being able to develop the technologies.
*December 4, 2015*

**math 210 fundamentals of geometry**

No table. You cannot copy and paste here. Also, what is your question?
*December 4, 2015*

**math**

x + (x+44) = 180º Solve for x, then x +44.
*December 4, 2015*

**Algebra 1**

No Scatterplot. You cannot copy and paste here.
*December 3, 2015*

**Math HELP!**

It would help if you proofread your questions before you posted them. Incomplete. f(t) = ?
*December 3, 2015*

**sampling distributions & parameter estimation**

Expected mean = 50 SEm = SD/√n
*December 3, 2015*

**Language art 7th grade**

Look them up in a dictionary. If you don't have a hard copy, try http://www.learnersdictionary.com/definition/
*December 3, 2015*

**statistics**

15 * 2 = 30
*December 3, 2015*

**science**

https://www.google.com/search?client=safari&rls=en&q=velocity+calculation&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*December 2, 2015*

**Mathematics**

Mean = ∑x/n (.87 + .89 + .91 + .85 + 2x)/6 = .9 Solve for x.
*December 2, 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.
*December 1, 2015*

**science**

Last one, Meiosis II
*December 1, 2015*

**Algebra 1**

When multiplying/dividing, exponents are added/subtracted respectively. (-x^3)(-x^1) = -x^4 = x^4 since minus times minus = positive
*December 1, 2015*

**Pre algebra**

50 - x < 39
*December 1, 2015*

**Math**

Combine terms. The x^2 terms cancel out. -2x-3 = -x-3 -x = 0 Do you have typos?
*December 1, 2015*

**Math**

See previous post. Multiply proportion found by 60.
*December 1, 2015*

**Math**

See previous post.
*December 1, 2015*

**Math**

Z = (score-mean)/SD Use the table.
*December 1, 2015*