Saturday

August 29, 2015
Total # Posts: 20,134

**math**

6 * 3 = 18 - 1 = 17 Adjust positives and negatives.
*March 1, 2015*

**biology**

If the number of chromosomes doubles in each generation, what would that do? If that doesn't happen, what has occurred?
*March 1, 2015*

**math**

$5.75v > $99 + $.50v
*March 1, 2015*

**statistics**

Insufficient data. Mean? Standard deviation? 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 below each Z value. Multiply by 100.
*March 1, 2015*

**Math**

Mean = ∑x/n 5.8 = (13*5.9 + x)/14 Solve for x.
*March 1, 2015*

**funfamental concepts**

disagree.
*March 1, 2015*

**Simultaneous equations**

3x = 14y x = 14y/3 x-4y+1=0 Substitute 14y/3 for x in the third equation and solve for y. Insert that value into the first equation to solve for x. Check by putting both values into the second equation.
*March 1, 2015*

**math**

If they are 90% and 80% in each of the subjects, of course Vani scores better.
*March 1, 2015*

**math**

Let s = shortest side, then longest = s+6 and 2s = third side. s + (s+6) + 2s = 25 Solve for s then the others.
*March 1, 2015*

**math**

Use Pythagorean theorem.
*March 1, 2015*

**statistics**

99% = mean ± 2.575 SEm SEm = SD/√n
*March 1, 2015*

**statistics**

What is your question?
*March 1, 2015*

**applying fundamental concepts**

I would disagree. Look them up in your text's table of contents or Google the terms.
*March 1, 2015*

**tablun elementary school**

(7x-8y)^2
*March 1, 2015*

**Statistics/check answer**

Right
*March 1, 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.
*March 1, 2015*

**Statistics**

a. Don't understand what you are seeking. b. 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. Cannot graph on these posts. c. Use...
*March 1, 2015*

**Math**

Z = (score-mean)/SD Variance = SD^2 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.
*March 1, 2015*

**statistics**

Need to have specific example.
*February 28, 2015*

**Math**

I'm not sure what you want. Multiply by 4n and 5m^2. 15m^3 * 8n^2
*February 28, 2015*

**Health**

There are many nutrition myths. https://www.google.com/search?client=safari&rls=en&q=nutrition+myth&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*February 28, 2015*

**Math**

You cannot copy and paste here.
*February 27, 2015*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for Z = ±1.96. Hint: It is the area between Z and the mean.
*February 27, 2015*

**Statistics**

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 of the Z score.
*February 27, 2015*

**statistics**

https://www.google.com/search?client=safari&rls=en&q=probability+of+being+born+on+the+same+date&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*February 27, 2015*

**PSYCH**

28 is right.
*February 27, 2015*

**Math**

11/16 = x/24 Solve for x.
*February 27, 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 in the smaller area related to the Z score.
*February 27, 2015*

**Statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.025) and its Z score. 95% = mean ± 1.96 SEm SEm = SD/√n
*February 27, 2015*

**Science**

They all look good.
*February 27, 2015*

**Statistics**

The below is assuming a normal distribution. However this is not true. Z = (score-mean)/SD = 0 - 3.7/3.3 = -1.12 This means that over 13% have never been assaulted. The distribution would be positively skewed. Find table in the back of your statistics text labeled something ...
*February 27, 2015*

**s**

Blood always leaves the heart in arteries and returns to the heart in veins.
*February 27, 2015*

**math**

5 and 6 are factors, but 7 is not. Explore multiples of 30.
*February 27, 2015*

**Health**

Agree
*February 27, 2015*

**math**

40(2) + 150(.30) = ?
*February 27, 2015*

**Statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.005) and its Z score. 99% = mean ± 2.575 SEm SEm = SD/√n
*February 27, 2015*

**health**

Do you have choices? Cerebellum? Precentral gyrus?
*February 27, 2015*

**algebra**

A. No B. Assume you have 5 quarters and 3 dimes. Add any amount to that to see what happens.
*February 27, 2015*

**math fractions**

5/total coins = ? Dollar bills are not coins.
*February 27, 2015*

**Algebra 1**

5x + 7y = 3 2x + 3y = 1 Multiply first equation by 2 and second by 5. Subtract first equation from second.
*February 26, 2015*

**Math**

2/5(1/5) +(1-2/5)(1/3) = ?
*February 26, 2015*

**statistics**

Z = (score-mean)/SD Do you know the 68-95-99.7 rule? Approximately 68% of scores in normal distribution are within one standard deviation (Z)(34% on each side of the mean), 95% within 2 SD, and 99.7% within 3 SD.
*February 26, 2015*

**Math - Algebra**

Could be that the ride home be downhill?
*February 26, 2015*

**Math (?)**

37 + 58 = 95 ≠ 220
*February 26, 2015*

**Math?**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. What is your question?
*February 26, 2015*

**math**

x < 45 3x > 5 127 ≤ x x ≤ 50
*February 26, 2015*

**algebra**

Factor the 6. Which factor times 3 plus the other factor = 11?
*February 25, 2015*

**Math**

I don't get one of those answers either. 45 - 30 = 15
*February 25, 2015*

**math**

You do not add another 30 to each of the fractions. 30 + 30/3 + 30/5 = 30 + 10 + 6 = 46
*February 25, 2015*

**Algebra 2**

(-2)^2 + 4(-2) = 4 - 8 = -4
*February 25, 2015*

**Urgent math help**

X intercept is where y = 0. Insert value and calculate.
*February 25, 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.
*February 25, 2015*

**Algebra**

I don't know how you reached that answer either. a^1/a^2 = (a)/(a*a) = 1/a
*February 25, 2015*

**Communications**

If Tay was really talking about fly fishing, he won't need a frying pan, but will need enough space in the classroom to demonstrate the casting and using the landing net. Will you be wearing waders?
*February 25, 2015*

**Math**

V = 4/3π*r^3 Insert values and calculate.
*February 25, 2015*

**math**

2c + 2p + pot = 10.20 p = c/2 pot = c + 3 Substitute c terms for p and pot to solve for c. Then use third equation to solve for pot.
*February 25, 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 your later post.
*February 25, 2015*

**Math**

3J = G (J +15) + (G + 15) = 110 Substitute 3J for G in the second equation and solve for J. Insert that value into the first equation to solve for G. Add 15 to each.
*February 25, 2015*

**intermediatealgera**

Multiply all terms by x. 2x - 2x - 4 - 2x Combine like terms.
*February 25, 2015*

**intermediatealgera**

Use process indicated in your following post.
*February 25, 2015*

**Arithmetic**

One must be negative. Try factoring -70.
*February 24, 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. I'll let you do the calculations.
*February 24, 2015*

**algebra1**

Use process suggested in previous post.
*February 24, 2015*

**Algebra 1**

Subtract first equation from the second.
*February 24, 2015*

**Statistics**

Mode http://drdavespsychologypage.homestead.com/Two___Two_____four.pdf
*February 24, 2015*

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. If replacement, then: 3/12 * 5/12 = ?
*February 24, 2015*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability to the left of Z. Since Z is negative, it is in the smaller portion.
*February 24, 2015*

**statistics**

Use Z table.
*February 24, 2015*

**maths-probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 2/n * 1/(n-1) = 1/28 If they haven't been replaced, the probability of picking a red = 0.
*February 24, 2015*

**Biology - Genetics**

An autosome is a chromosome that is not an allosome (i.e., not a sex chromosome). Autosomes appear in pairs whose members have the same form but differ from other pairs in a diploid cell, whereas members of an allosome pair (XX, XY) may differ from one another and thereby ...
*February 23, 2015*

**Math**

3/2 * 18 = ?
*February 23, 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 between the two Z scores. Multiply by 100.
*February 23, 2015*

**Psych 42 (Stats)**

Same process as following post from Alecia.
*February 23, 2015*

**Science**

Since this is not my area of expertise, I searched Google under the key words "fluorine element" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=fluorine+element&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*February 23, 2015*

**child psychology in general**

I definitely agree with B. Assuming that the experiments were not faulty, the theory needs to be rejected or at least modified.
*February 23, 2015*

**Maths**

272 + 325 = ?
*February 22, 2015*

**statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.025) and its Z score. 95% = mean ± 1.96 SEm SEm = SD/√n
*February 22, 2015*

**math**

(x-1)(x+2)-(x-3)^2 = (x^2+x-2) - (x^2-6x+9) = x^2+x-2-x^2+6x-9 = ? Combine like terms.
*February 22, 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. However, I will start it for you. A. 400 + 1 = 401
*February 22, 2015*

**statistics**

16/40 Reduce.
*February 22, 2015*

**statistics**

You cannot copy and paste here.
*February 21, 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. However, I will begin. A. Does cell phone radiation increase the probability of tumors?
*February 21, 2015*

**math**

P = 2L + 2W = 36 + 12 = 48 cm Since you are rounding the error for each L and W < .5 cm. With 4 sides, the should be < 2 cm. Now, you find the percentage.
*February 21, 2015*

**math**

agree.
*February 21, 2015*

**statistics**

Z = (score-mean)/SD ±3 = (score-158)/8 Solve for both the negative and positive values.
*February 21, 2015*

**Math**

C = πd = 3.14 * 2.5 = ? Area of towel = ? * 10 * 15 Of course, this will be a little off, since the circumference will increase as the layers accumulate.
*February 20, 2015*

**Last help Thanks**

The ratio is 4:7, but the odds are 4/11, # Ss vs the total possible choices.
*February 20, 2015*

**Satistics Help**

Typos? Odds of winning = a/(a+b) = # winning games over total.
*February 20, 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 I'll let you do the ...
*February 20, 2015*

**Psyc**

What is your question? You cannot copy and paste here.
*February 20, 2015*

**life orientation**

I assume you are talking about approach-avoidance conflicts, which will lead to vacillation (alternating approach and avoidance without ever accomplishing the goal). Types of Internal Conflicts I. Approach-approach involves two or more positive goals. It is easily resolved (...
*February 20, 2015*

**Math**

72º/3 = 24º per slice 360º/24º = ?
*February 19, 2015*

**Biology**

Zunie forgot that the male is XY, and the Y chromosome does not contain a color vision gene. 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
*February 19, 2015*

**Math**

We do not have data for the number of chores, but we do have data for the number of hours worked. Again, hours of chores/summer month = 5 * 4 * 1.5 = 30 hours per 20 weeks If you do not have a typo, hours of chores/winter month = 6 hours per 28 weeks Mean = ∑x/n = (30+6...
*February 19, 2015*

**Math**

d = rt = 5 * 8/60 = ? ?/(10/60) = r = miles/hour
*February 19, 2015*

**business math**

It would help to know the specific problem.
*February 19, 2015*

**math please help**

First triangle has a perimeter of 18 = 3 + 7 + 8. 54/18 = 3 So if they are "similar," each side must be three times larger.
*February 19, 2015*

**Anthropology**

Formal sanctions typically involve fines, incarceration and/or execution. Informal sanctions typically involve scorn, rejection and/or exclusion.
*February 19, 2015*

**math**

Best estimate = 2/8 * 120 = ?
*February 19, 2015*

**math**

Best estimate = 6/300 = ? ? * 1800 = ??
*February 19, 2015*