Monday

April 21, 2014

April 21, 2014

Total # Posts: 17,499

**Algebra Readiness**

L = W = 8 2W + 2L = Perimeter W * L = area

**behavioral statistics**

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities to compare their Z scores (the most common type of standard score).

**Math**

(2*6+3)^2 > 175 15^2 > 175 225 > 175

**Statistics**

Don't have a TI-84 calculator, but.... 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 (.80) related to a Z score. Insert that value into the above equa...

**math**

2 1/3x = 7/3x = 15 x = 6.43 .43 * 7/3 = ?

**math**

5x = beads in necklace 5x + x = 192 Solve for x, then 5x.

**math**

14 - 9 = ?

**probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (1-.4)(1-.8)(1-.6) = ?

**Statistics**

It is 99%, sorry for the typo.

**Statistics**

95% = mean ± 2.575 SEm SEm = SD/√n I'll let you do the calculations.

**Science Please HELP!!!**

X-chromsome Now are you reedy for the real thing rather than just practice?

**Genetics**

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.

**ela**

Google each term. In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

**business communication (?)**

Do you have alternatives to choose from? You cannot copy and paste here. Having typos (as you have in your subject listing) indicates lack of attention to detail.

**math**

19/5 = x/1.5 Solve for x.

**math**

9.5/2 = x/14 Solve for x.

**Math**

6'4" = 76" 1" = 2.54 cm 76" * 2.54 = ?

**Psychology**

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 searched Google under the key words "power assertion psychology" to get...

**vocab (?)**

It would help if you included the context for these terms.

**Science**

How could you throw a ball, "if inertia didn’t exist?"

**psy220**

Not knowing what your question is, I searched Google under the key words "American pursuit of happiness" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=American+pusuit+of+happiness&ie=UTF-8&oe=UTF-8#q=American%20pursuit%20of%20hap...

**AP style (?)**

What is the context? For example, if it is North Central College, it would not be hyphenated.

**Statistics (?)**

What blanks? Z = (score-mean)/SD T = 50 + 10Z

**statistics**

95% = mean ± 2 SD 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 ...

**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.

**math (?)**

We cannot see your diagram, and you cannot copy and paste it. https://www.google.com/search?client=safari&rls=en&q=right+acute+and+obtuse+angles&ie=UTF-8&oe=UTF-8

**Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/3 * 1/3 = ?

**Statistics**

Either-or probabilities are found by adding the individual probabilities. Since three face cards are already spades, delete them for the face card probability. 9/52 + 13/52 = ?

**Probability**

Right!

**Probability**

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.

**rutgers**

With your data, you don't, unless you meant ∑(mean-x)^2 = 238 You have to 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 var...

**math**

33.60/4 *1000 = ?

**statistics**

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 something like "area...

**A Peculiar Question**

It is a learned method of relating to others. If it inconsistent over situations and persons, it can be considered an aspect of one's personality. However, whatever is learned can be unlearned… assuming that the person wants to unlearn it.

**Algebra 1**

The latter. Exponents are added when multiplying terms.

**Science**

C

**math**

(11,000-8690)/11,000 = ?

**Bio 20**

Although this is not my major area of expertise, I would say D. For the same volume of water, a thin hose has more pressure than a larger one.

**Science**

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

**statistics**

µ = 30 Variance for distribution of means = (SD/√n)^2 = ?

**Science**

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.

**math**

I assume you mean 3/8 = 7/(x+1). Multiply both sides by x+1. 3/8x + 3/8 = 7 Subtract 3/8 from both sides. 3/8x = 6 5/8 = 53/8 Multiply both sides by 8/3. x = 53/8 * 8/3 = ?

**Probability**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1. .2 * (1-.3) = ? Either-or probabilities are found by adding the individual probabilities. 2. (.2 *3.) + (.8 *.3) = ?

**Science**

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 last post.

**Science**

I agree.

**algebra**

Ah, better! l2xl > 16 x > ± 8

**algebra**

It would help if you proofread your questions before you posted them. There is no inequality given. An inequality requires either a < or > symbol.

**maths**

It would help if you proofread your questions before you posted them. Hard to know if the space denotes a comma or period or something else. 55,010 - 899 = 54, 111

**STATS**

To make a prediction, it doesn't matter which variable is measured on the abscissa.

**Biology**

Is SW USA a polar Region? I live in the SW… A.

**BIOLOGY**

Availability of food and vulnerability to predators. Natural mutations might make changes in phenotypes that help in dealing with the two factors above. Those would then tend to reproduce.

**Middle School Math Help Please**

Juice started out as a whole glass (1). Water = 1/6 + 1/3 + 1/2 = ?

**Algebra**

w = 30 - y 9.95w + 13.50y = 337.55 Substitute 30-y for w in second equation and solve for y. Insert that value into the first equation and solve for w. Check by inserting both values into the second equation.

**Math**

Subtract one equation from the other to eliminate the y. 11x = -11 Solve for x then y.

**algebra**

I don't understand why 100x is negative. Wouldn't commission for sales be positive? If he sells no computers, x = 0.

**Statistics**

See previous post.

**Statistics**

If you are comparing two means, you need to have the SEm, which requires knowledge of n. You do not supply that value. 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 ...

**Science**

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

**Socials**

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

**Math**

each set? With replacement, the probability for red remains 6/15 = 2/5 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

**Statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .8 * (1-.6) = .32

**Statistics (?)**

More data is needed for us to provide help.

**stastistics**

http://en.wikipedia.org/wiki/Student's_t-test

**algebra (?)**

No answers followed. Cannot copy and paste here.

**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 related to the Z score. If the events are independent, the probability of both/all events occurring is deter...

**statistics**

Expect the µ's to stay the same. The standard error of the mean (SEm) = SD/√n SEm would tend to get smaller as n increases.

**Algebra 1**

f = 2s + 6 s + f = 24 Substitute 2s+6 for s in second equation and solve for s. Insert that value into the first equation and solve for f. Check by inserting both values into the second equation.

**Math**

We cannot draw on these posts.

**Chemistry needs help**

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

**science**

Also, please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you.

**Science**

I agree.

**stats (?)**

since you cannot copy and paste, we do not have the ANOVA. Even if we did, what is you question?

**Math**

Multiply top equation by 3 and then add the equations. 3x + 6y = 15 -3x + 6y = 15 12y = 30 You can take it from this point.

**math (second Anon.)**

First, if you are a different anonymous and 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. Second, we do not do your homework for you. ...

**math (first Anon.) (?)**

Choices not given. You cannot copy and paste here.

**math**

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

**biology**

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

**biology**

See your later post.

**math (?)**

You have two unknowns. Without more data, it cannot be solved.

**Chemistry needs help**

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

**maths (?)**

Again you are unclear. Are you choosing from the selected cards or the remainder of the deck? If of the 7 cards removed, red card is 2/7. neither king nor queen = 5/7 I'll let you do the rest.

**maths**

I'm not sure what "it" refers to. As long as the choice is random, there are 15 odd cards of the 30. 15/30 = ?

**Statistics**

Sampling with replacement puts the chosen unit back in the pool, while without replacement does not. Probabilities remain the same with replacement, but both numerator and denominator are reduced by one in without replacement in subsequent choices.

**Math**

3s + 4j = 360 s + 3j = 220 Multiply second equation by 3, then subtract first from second. 3s + 9j = 660 5j = 300 Solve for j, then insert that value into either equation to find s.

**Ethics**

Intrinsic goods are valued in themselves rather than leading to some other goods. http://www.diffen.com/difference/Ethics_vs_Morals

**Math**

1.3-2.5x ≤ -1.2x-0.52 Add .52 and 2.5x to both sides. 1.3 + .52 ≤ -1.2x + 2.5x 1.82 ≤ 1.3x Divide both sides by 1.3. 1.4 ≤ x or x ≥ .14

**Statistics**

Why are you substituting 5 for =? 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 (.025 because it is two-tailed) and its Z score. Insert Z first as positiv...

**physics (?) needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. https://www.google.com/search?client=safari&rls=en&q=appropriate+outlet+box&ie=UTF-8&oe=UTF-8

**Math 7**

Cannot be solved unless you have some indication of relation of A or b to the height (20). A = 10b

**Math**

Change to common denominator (70). 35/70 + 40/70p > 91/70 40/70p > 56/70 p > 56/40

**math 3 (?)**

What is your question?

**Math**

You are more likely to get help, if you included specific problems from that unit.

**math**

Since half of the isosceles would a right triangle, use the Pythagorean theorem with 1/2 value of the base. 4^2 + altitude^2 = 5^2 Solve for the altitude.

**Statistics**

Need to ask questions first to get more details. Was the sample random? Was it large enough? Was the spread statistically significant? Was the way the question was stated biased?

**Statistics**

http://drdavespsychologypage.homestead.com/Odds__Figuring.pdf

**math (?)**

Need to print data. Copy and paste do not work.

**statistics for managers**

We have no knowledge of your departments.

**Algebra**

Let a and B represent the respective hours worked. 10A + 7.5B > 300

**algebra**

10x+25(x+2)+5*5(x+2)= 400 10x + 25x +50 + 25x + 50 = 400 55x = 300 x = 300/55 = 5.45 I found one mistake in you equation above (bold), but that still does come out right. Do you have any typos?

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