Monday

May 25, 2015

May 25, 2015

Total # Posts: 19,880

**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. See your later post.
*April 4, 2015*

**Music**

Since this is not my area of expertise, I searched Google under the key words "how to compose music" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=how+to+compose+music&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*April 4, 2015*

**project child care**

Not unless you post the information.
*April 3, 2015*

**child development**

Your choice is split-half reliability.
*April 3, 2015*

**age question**

24 + x = 3x Solve for x.
*April 3, 2015*

**variation**

What is your question?
*April 2, 2015*

**math**

x+ y = 33 x + 3y = 81 Subtract first equation from second. 2y = 48 Take it from here.
*April 2, 2015*

**math please help**

No diagram, so we don't have any idea about F. You cannot copy and paste here.
*April 2, 2015*

**fluids**

Since this is not my area of expertise, I searched Google under the key words "benefits of a fluid system" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=benefits+of+a+fluid+system&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...
*April 1, 2015*

**math (urgent)**

It would help if you proofread your questions before you posted them. Is 20,000 missing a zero, or does 140,000 have an extra zero?
*April 1, 2015*

**Algebra 2**

A percentile is a measure used indicating the value below which a given percentage of observations in a group of observations fall. Arrange in order of value, lowest to highest. Third value = 30th percentile.
*April 1, 2015*

**Math**

315/1901 = ?
*April 1, 2015*

**prob. & stat.**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 15/24 * 15/24 = ?
*April 1, 2015*

**Algebra Please Help**

if x = 0, then y = 0^2 + (-3) = 0^2 - 3 = ? Do the same with the other x values.
*April 1, 2015*

**Algebra Please Help**

Substitute the x values in the equation and solve to find values of y.
*April 1, 2015*

**math**

time = distance/speed min time = (400,000-100,000)/(3500+500) = 75 max time = (400,000+100,000)/(3500-500) = 166.7 I don't get those answers either.
*March 31, 2015*

**statistics**

a) 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 Z. b) Multiply probability by 109.
*March 31, 2015*

**statistics**

I searched Google under the key words "alpha level critical value" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=alpha+level+critical+value&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the information you desire more ...
*March 31, 2015*

**statistics**

Null hypothesis will be rejected if p ≤ .01. Is .05 < .01?
*March 31, 2015*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .83^6 * (1-.83)^2 = ?
*March 31, 2015*

**maths**

(1-3/4) * 1/3 = ?
*March 31, 2015*

**Ethics & Social Responsibility**

You cannot copy and paste here.
*March 31, 2015*

**maths**

3/5 grapes - 1/5 apples = ?
*March 31, 2015*

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. (24 * 72)^2 = ? Multiply 24 by 72, then multiply that answer by itself.
*March 30, 2015*

**Psychology**

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.
*March 30, 2015*

**Math**

Unless you know the total amount of boys and girls, I would agree.
*March 30, 2015*

**science help**

Since this is not my area of expertise, I searched Google under the key words "rubidium electrons" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=rubidium+electrons&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*March 30, 2015*

**math**

What other fraction?
*March 30, 2015*

**Algebra**

6 * 2 = 12 ft^2 for the bottom. How high are the sides?
*March 30, 2015*

**maths**

It would help if you proofread your questions before you posted them. Data missing. "marked __ out of a total of 200 marks." mean = ∑x/n
*March 30, 2015*

**COMMON CORE MATH**

In relation to what context?
*March 29, 2015*

**Psychology 202**

Cognitive?
*March 29, 2015*

**Pschology 202**

Typically.
*March 29, 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 ± Z SEm SEm = SD/√n
*March 29, 2015*

**Stats**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.05, ±.025, ±.005) to get the Z scores. % = mean ± Z SEm SEm = SD/√n
*March 29, 2015*

**math**

What hexagons? Cannot copy and paste here.
*March 29, 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 ≤ .05?
*March 29, 2015*

**statistics**

When you get the missing data: 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.
*March 28, 2015*

**Body Systems II**

away from
*March 28, 2015*

**math**

If they are uniformly distributed: (55-50.75)/10 = ?
*March 28, 2015*

**math**

How many inches?
*March 27, 2015*

**Math Help!!!**

f(x) = 3(1.5) - 2 = ?
*March 27, 2015*

**Algebra**

-4x + 9y = 9 Multiply second equation by 3. 3x - 9y = -18 Add the two equations. -x = -9 x = 9 Insert x value in the first equation to find y.
*March 27, 2015*

**Math**

2 quarters = $.50 3 dimes = $.30 3 nickels = $.15
*March 27, 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 27, 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.
*March 27, 2015*

**Math-Lit 143**

Lacking Data.
*March 26, 2015*

**College Algebra**

A square will give the largest possible area. 60x + 20x + 20x = 1,500 Solve for x.
*March 26, 2015*

**Math**

There are 36 possibilities. Four can be obtained by 1,3; 3,1; 2,2. So 3/36 = ?
*March 26, 2015*

**algebra**

No equation.
*March 26, 2015*

**math**

Please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you. I assume you want to know ages of Alyssa and Jeff. If Sarah is 8, then Jeff is 2 * 8 = ? Alyssa is 4 * ? = ??
*March 25, 2015*

**math**

Lacking data. Need to know total band members.
*March 25, 2015*

**math**

1. How many numbers are (less than) <2? 2. Right 3. "Complement of 4" means all the numbers that are not 4.
*March 25, 2015*

**English**

I would use the synonym of "conserve."
*March 25, 2015*

**Science, genetics**

The genotypes are ss and Ls. 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
*March 25, 2015*

**Algebra**

"≤" means "smaller than or equal to." I don't know how a dot fits in.
*March 25, 2015*

**math**

F = S - 401 F + S = 3391 Substitute S-401 for F in the second equation and solve for S. Insert that value into the first equation to solve for F. Check by putting both values into the second equation.
*March 25, 2015*

**Algebra 2**

There are 36 combinations of two dice. Even sums include; 1,1 2,2 3,3 4,4 5,5 6,6 2,4 4,2 1,3 3,1 3,5 5,3 4,6 6,4 If I have all the even combinations = 14/36 = ?
*March 25, 2015*

**speech**

cliff?
*March 25, 2015*

**statistics**

Right, but to get percentage, you need to multiply by 100.
*March 25, 2015*

**Please help me with Psychology**

Could do an experiment, but what would you use as a control group?
*March 24, 2015*

**science**

Since this is not my area of expertise, I searched Google under the key words "electrical deduction" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=electrical+deduction&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you can find the ...
*March 24, 2015*

**Science**

Although this is not my area of expertise, those last choices sound better.
*March 24, 2015*

**Math**

Right, but online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 3.1 * 10^-6
*March 24, 2015*

**Math**

Right, but online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 6.98269 * 10^5 However, you could also round it. 6.98 * 10^5
*March 24, 2015*

**Math**

Right.
*March 24, 2015*

**Biology**

Google each term.
*March 24, 2015*

**maths**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Since 3 sides are even and 3 are odd, the chances of even = 3/6 = 1/2. For three dice, probability of all even = (1/2)^3 = 1/2...
*March 24, 2015*

**Math, Algebra**

B = A/2 B = C + 1/12 = 1/6 + 1/12 = 2/12 + 1/12 = ? Put answer to second equation into the first to find A, then add the two.
*March 24, 2015*

**Math**

If it is a rectangular prism, why would you sketch a triangle? First, find the perimeter, 2L + 2W. Then multiply by 200/4, "the top quarter of each vertical face."
*March 23, 2015*

**statistis**

Range = highest score - lowest. Find the mean = 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...
*March 23, 2015*

**pls help me pre algebra**

2^3/2^3 = (2*2*2)/(2*2*2) They cancel each other out, which gives you 1.
*March 23, 2015*

**math**

Also, indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*March 23, 2015*

**expressions**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. I agree with your answers. 5^2 * 5^4 = 5^6 3^3 * 3^6 = 3^9
*March 23, 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 proportions/probabilities related to your Z scores.
*March 23, 2015*

**algebra**

7.2 - 8.6 + 9.3 + 5.4 = 13.3
*March 23, 2015*

**Probability & 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 = 1.96 95% = mean ± 1.96 SEm SEm = SD/√n
*March 23, 2015*

**biology/evolution**

Does it fool pollinators into believing that it does?
*March 22, 2015*

**analytical tools**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .74^4 * (1-.74) = ?
*March 22, 2015*

**Biology needs help**

Medhat's response makes it look like the post has been answered.
*March 22, 2015*

**Probability and Statistcis**

I don't know what five numbers you are seeking, but this might be a partial response. 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 ...
*March 22, 2015*

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .05^10 = ?
*March 22, 2015*

**Science Please**

6. correct 7. wrong 8. right 9. wrong 10. disagree
*March 22, 2015*

**Biology**

Right, all are tall and half are yellow.
*March 22, 2015*

**math**

"Before the third card is chosen" means a 1 is chosen as either the first card or second card. Probability of 1 being chosen as first card = 2/6. Assuming that the first card was not a 1, the probability of 1 being chosen as a second card = 2/5. Either-or ...
*March 22, 2015*

**Psychology help**

Not sure what you seek. Acknowledging positive achievements?
*March 22, 2015*

**Life orientation**

What is NFSAS?
*March 22, 2015*

**math**

x would be the height and 6 - 2x would be the length/width.
*March 22, 2015*

**algebra**

100 * (3,000-237)/3,000 = ?
*March 21, 2015*

**English**

"Go" is not necessary. "Sic" indicates that it was as written, even if erroneous. “you’re ready to go (sic) do something else’’ (Jordan, first name, year, possibly page if book) https://www.google.com/search?client=safari&rls=en&q=text+...
*March 21, 2015*

**math**

A = S + 8 17A + 9S = 4,400 Substitute S+8 for A in the second equation and solve for S. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.
*March 21, 2015*

**Math**

We cannot graph on these posts.
*March 21, 2015*

**maths**

Convert cm to mm by multiplying by 10. V = πr^2h = π * 140^2 * 100 = π * 19600 * 100 = 1,960,000π 1,960,000π = π2^2h = π4h Solve for h = length
*March 21, 2015*

**math**

Lacking data. How many numbers are there? The probability of hitting a particular number is the same no matter which spin it is.
*March 21, 2015*

**Help with Psychology regarding Positive Correlatio**

With a positive correlation, both variables increase/decrease together.
*March 21, 2015*

**Genetics (science)**

Both are Bb. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*March 21, 2015*

**Science**

Man is FF, woman is aa. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl
*March 21, 2015*

**statistic**

No data. You cannot copy and paste here.
*March 21, 2015*

**statistics (jay)**

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.
*March 20, 2015*

**statistics (etoile)**

Ho: M = E Ha: M < E 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 ...
*March 20, 2015*