Tuesday

May 26, 2015

May 26, 2015

Total # Posts: 19,882

**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 of the Z score. Is it ≤ .01?
*March 7, 2015*

**Maths literacy,life science,physical science,consu**

Talk to your school counselor. Assuming that your abilities are adequate or better in all these areas, s/he will have interest tests to help you decide.
*March 7, 2015*

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 100+91*3+94+93+82+89/8 = Do multiplication and division first. 100+273+94+93+82+11.125 ≠ 116,375
*March 7, 2015*

**SAT Math**

3x + 4y = 10, if x = 2 and y = 1.
*March 7, 2015*

**Maths**

Speed = 50/45 = x/60 Solve for x.
*March 7, 2015*

**statistics**

Z = (score-mean)/SEm SEm = SD/√n Use Z table, as indicated in previous posts.
*March 7, 2015*

**science**

If some catastrophe effected that phenotype, there would be no survivors. Also, the genotypes are chance combinations of genes, some of which may have mutated.
*March 6, 2015*

**science**

Assuming B = dominant and b = recessive, then the organism would be tall.
*March 6, 2015*

**Goof**

Sorry, I originally read as second pair free. 1.06 (2 * 24.99 + 12.50) = ?
*March 6, 2015*

**MATH**

Right.
*March 6, 2015*

**help**

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 you out. The area is much too broad. You could write books dealing ...
*March 6, 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.
*March 6, 2015*

**science**

Lizards have legs.
*March 6, 2015*

**math**

What digits?
*March 5, 2015*

**Statistics/Probability**

a. See process in later post. b. Z = (score-mean)/SEm SEm = SD/√n Use same table. C. Judge by your results.
*March 5, 2015*

**Math 6th grade**

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

**statistics/normal distribution**

Another method: 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.
*March 4, 2015*

**statistics/Help Please!!**

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 SEm = SD/√n Find ...
*March 4, 2015*

**surface area of solid shapes**

V = 1/3. 22/7. r^2 .h π = 22/7 3V/πh = r^2 Take it from there.
*March 4, 2015*

**algebra**

L * W = 120 6W = 120 3W = ?
*March 4, 2015*

**Math Check**

Right!
*March 4, 2015*

**Business (?) needs help**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
*March 4, 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.
*March 4, 2015*

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a. 4/6 * 3/8 = ? b. same process c. Either-or probabilities are found by adding the individual probabilities. 4/6 * 5/8 + 2/6 * ...
*March 4, 2015*

**Probabilities**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual ...
*March 4, 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 related to the Z score.
*March 4, 2015*

**math**

3x + 5*6 + 2x Simplify.
*March 3, 2015*

**math**

L * W = area area = (L-z)(W)
*March 3, 2015*

**math**

Area = L * W Area/L = W
*March 3, 2015*

**math**

Insufficient data.
*March 3, 2015*

**Math**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. I don't know if this answer is too advanced for 4th grade. Let one number = x and the other = y. x + y = 7 2/8 x - y = 2 4/8 Add the two ...
*March 3, 2015*

**MATH**

35 * 6/7 * 4/5 = ?
*March 3, 2015*

**Math (?)**

What rectangle and what circle?
*March 3, 2015*

**Science**

Agree with all.
*March 3, 2015*

**Child education**

Since it says "NOT," I would agree with A.
*March 3, 2015*

**6th Grade Math**

-82 + 15*5 = ?
*March 3, 2015*

**word problem**

73 - 5 = 68 If she puts 5 cupcakes in each container = 65, she will have 3 left over.
*March 3, 2015*

**Statistics**

Lacking sample data. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.05) to get the Z score. 90% = mean ± 1.645 SEm SEm = SD/√n
*March 3, 2015*

**6TH GRADE MATH**

Definitely 2.
*March 3, 2015*

**Statistics**

There are 36 total possibilities in rolling two dice. you are looking to get 5, 6, 7, 8, 9, 10, 11, or 12. Rather than looking for all of these, do the reverse 2, 3 or 4, and subtract from 36. 1,1 2,1 1,2 2,2
*March 3, 2015*

**math**

n^2 + (n+1)^2 = 265 Solve for n.
*March 3, 2015*

**Math- Data Management**

mean = ∑x/n 9 = (10*8 + x)/11 Solve for x.
*March 2, 2015*

**Math**

Only the first one is right. Black = 12/2 = 6 Silver = 12/6 ≠ 1 Other = 12 - 12/6 - 12/2 = ?
*March 2, 2015*

**Algebra**

I thought I already answered this. 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. Is it .75?
*March 2, 2015*

**pre algebra**

If you subtract the second equation from the first, you get: -2x = 8 x = -4 Substitute that into either equation to find the value of y.
*March 2, 2015*

**Math**

Right.
*March 2, 2015*

**math**

If you are talking about the typical, fair, six-sided die, it = 1/6
*March 2, 2015*

**Math**

25 + 12 + 30 - 17 = ?
*March 2, 2015*

**pschology**

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. Just as a start: What test is being used to analyze the data?
*March 2, 2015*

**Statistics**

The sample mean is a measure of central tendency, while the standard deviation is a measure of variability.
*March 2, 2015*

**History**

Manufacturing ability?
*March 2, 2015*

**general math**

f = 3c f+5 = 2(c+5) Substitute 3c for f in the second equation and solve for c. Insert that value into the first equation to solve for f. Check by putting both values into the second equation.
*March 2, 2015*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .6 * (1-3/4) * 640 = ?
*March 2, 2015*

**math**

Insufficient data. What are relationships between d and c to r?
*March 1, 2015*

**algebra**

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. Is it close to .75?
*March 1, 2015*

**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*