Wednesday

November 25, 2015
Total # Posts: 20,768

**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*

**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*