Sunday

February 19, 2017
Total # Posts: 23,009

**Statistics**

95% = mean ± Z(SD) 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. Insert data into above equation and solve.

*November 28, 2016*

**math**

I don't know how this is related to math. Although this is probably not much help for you, I would choose another site.

*November 28, 2016*

**Math**

Assuming that you meant 20 distance units: 20/5 = x/12 Solve for x.

*November 28, 2016*

**Science**

Glass, water, plants....

*November 28, 2016*

**math**

1000 + 900 + 800 + 700 + 600 + 500 + 400 = 4900

*November 28, 2016*

**maths**

Mode = most frequently occurring score.

*November 28, 2016*

**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 later post.

*November 28, 2016*

**math**

3.9 + .15 = ?

*November 28, 2016*

**Math**

Outlier is most deviant score. mean = ?x/n

*November 28, 2016*

**Math**

No triangles. Cannot copy and paste here.

*November 28, 2016*

**Math**

D = 2R

*November 28, 2016*

**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 "areas under ...

*November 28, 2016*

**Math**

No figures. Cannot copy and paste here.

*November 28, 2016*

**Math**

Possibly this. .2x = 16 Calculate for x.

*November 27, 2016*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

*November 27, 2016*

**math**

5554.52/20 = 27.73 per hour Multiply by the hours worked.

*November 27, 2016*

**MATH HELP NEEDED prt 2**

"start fraction x over 3 end fraction" is more easily written "x/3." 1. Letter answer conflicts with asterisks. 2. x/3 - 10 = -12 x/3 = -2 x = -6 Letter answer conflicts with asterisks. 3. Letter answer conflicts with asterisks. 4. Letter answer conflicts ...

*November 26, 2016*

**science**

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.

*November 26, 2016*

**Math**

.09x = 18 Solve for x.

*November 25, 2016*

**Science (?)**

More data needed.

*November 25, 2016*

**Math**

Subtract 2 from both sides, then divide by 5.

*November 25, 2016*

**Math**

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 = ?

*November 25, 2016*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 6 * 6 = ?

*November 23, 2016*

**system of equations**

Multiply first equation by 3. -12x - 3y = 18 12x - 2y = -8 Add the two equations. -5y = 10 Solve for y, then x.

*November 23, 2016*

**Math**

If there are three figures total. 2(7*3) + 4^2 = ?

*November 23, 2016*

**Math**

I am assuming that the square is one of the rectangles. 7 * 3 + 4^2 = ?

*November 23, 2016*

**Math**

4/180 = x/400 Solve for x.

*November 23, 2016*

**MATH**

(x+1) + 2x + (3x+1) = 30 Solve for x, then the values of each side.

*November 23, 2016*

**Math**

Cannot draw on these posts.

*November 23, 2016*

**science**

Since this is not my area of expertise, I searched Google under the key words "what makes us cry while chopping onions" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+makes+us+cry+while+cutting+onions&ie=UTF-8&oe=UTF-8 In the...

*November 23, 2016*

**science (?)**

It would help if you proofread your questions before you posted them. "worm infestation of certain autoimmune disorders...."?

*November 23, 2016*

**Algebra**

2M + 22

*November 22, 2016*

**Math**

Let x = causes and y = outcome. x = 4y x + y = 30 Substitute 4y for x in the second 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.

*November 22, 2016*

**Math**

Subtract estimate from exact answer.

*November 22, 2016*

**math**

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 for Z in each of the situations.

*November 21, 2016*

**Help needed**

disagree

*November 21, 2016*

**Math**

2A - 3(A-6) = A Solve for A.

*November 21, 2016*

**Math**

Does "hence" mean from "10 years ago"? F = 2S F-10 = 4(S-10) Substitute 2S 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.

*November 21, 2016*

**Science (?)**

No equations given.

*November 21, 2016*

**AP Statistics - Chapter 6**

1/6^10 * 5/6^10

*November 18, 2016*

**biology**

Instead of lungs, insects breathe with a network of tiny tubes called tracheae. Air enters the tubes through a row of holes along an insect's abdomen.

*November 18, 2016*

**Science**

What about it? Need to be more specific. https://www.google.com/search?client=safari&rls=en&q=athlete's+foot&ie=UTF-8&oe=UTF-8

*November 17, 2016*

**math help pls**

agree

*November 17, 2016*

**MATHIN-HELPN!**

a. 3 b. 1/2

*November 17, 2016*

**Anatomy**

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

*November 17, 2016*

**Math**

3/4x + 3.5 = 6.5 - 2/3x Solve for x.

*November 17, 2016*

**6 grade math**

Let x = length of longer pieces 2x + (x-15) = 156 Solve for x.

*November 16, 2016*

**Algebra**

Eight-sided? Assuming a 1 on one die, of the 8 sides of the other die, 1, 2, 3, 4 or 5 of the 8 ? 6. 5/8 = ?

*November 16, 2016*

**Algebra**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 3/5 * (3-1)/(5-1) * (3-2)/(5-2) = ?

*November 16, 2016*

**Math**

50/4.80 = x/10.80 Solve for x.

*November 16, 2016*

**math**

15V + 9

*November 16, 2016*

**Science**

How far away is he standing?

*November 16, 2016*

**cms (?)**

What numbers?

*November 16, 2016*

**Mathematics**

What are the units for land measurement?

*November 16, 2016*

**Math work**

30 + 30 = 60 cards from cousin X - 1/4X - .2X - .5X = 60 Solve for X.

*November 16, 2016*

**math**

None are rounded to the nearest pound. However, unless there are typos, the closest answer would be C, since I estimate 21/3 = 7.

*November 16, 2016*

**Statistics**

SEm = SD/?n 25 = 300/?n Solve for n.

*November 15, 2016*

**Math**

M = 3S (M+10) + (S+10) = 76 Substitute 3S for M in the second equation and solve for S. Insert that value into the first equation to solve for M. Check by putting both values into the second equation.

*November 15, 2016*

**Math check**

Good estimates.

*November 15, 2016*

**Math Statistics**

SEm = SD/?n 25 = 100/n Solve for n.

*November 15, 2016*

**Statistics**

SEm = SD/?n 25 = 100/n Solve for n. Are you also anonymous? 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.

*November 15, 2016*

**Stats**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 20/50 * (20-1)/(50-1) = ?

*November 15, 2016*

**SCIENCE**

No diagram. Cannot copy and paste here.

*November 15, 2016*

**math**

The longest one would be 5 by 1 (perimeter = 2L + 2W). Could also make 4 by 2 or 3 by 3.

*November 15, 2016*

**maths**

a) 800/20 + 1 b) 800/20 c) 20 * 21

*November 14, 2016*

**Math**

(12x-32)/4

*November 14, 2016*

**maths**

Think it again. 3 red, 4 black, 3 red, 4 black, 3 red, 4 black, 3 red, 4 black, 3 red, 4 black.

*November 14, 2016*

**math**

That means that the two side lengths are 2/3 perimeter, leaving 1/3 to be divided among the two widths.

*November 14, 2016*

**Maximal area and dimensions of a window**

Maximal area of rectangle is a square. 4w = 500 Solve for w.

*November 14, 2016*

**math**

Welcome

*November 14, 2016*

**math**

40,000 = 5000 + 2500m Solve for m.

*November 14, 2016*

**math**

3n - 26 > 10 Solve for n.

*November 14, 2016*

**math**

100(103/237) = ?

*November 14, 2016*

**math**

If you got one of each on the first three pulls, what do you think would happen on the fourth pull?

*November 13, 2016*

**Math**

one thousandths

*November 13, 2016*

**Statistics**

P(soph) = .25 P(non dorm soph) = (1-.60) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

*November 13, 2016*

**Math**

Steve got 60 cards from his cousin. x - .25x - .20x - .5x = 60 Solve for x.

*November 12, 2016*

**Biology**

Not knowing how they would interact, I would say B.

*November 12, 2016*

**Math**

11 !/4 = 90/8 1 7/8 = 15/8 90/15 = ?

*November 12, 2016*

**statistics (Partial)**

Why would you have an odd number of socks of any color? 2. min = 2, max = 5 3. 7/19 4. 4/(19-1) = ?

*November 12, 2016*

**Math**

7/28 = ?

*November 11, 2016*

**math**

How would you know if a score is deviant or relatively expected?

*November 11, 2016*

**maths**

Multiply second equation by 2. 4x + 2y = -8 3x - 2y = 1 Add the two equations to solve for x. Insert x into one of the equations to solve for y.

*November 11, 2016*

**Heath**

Only have 7 answers for 14 questions. If the order for the first 7 are correct, the first 3 are wrong, 4 is right, 5, 6 wrong, 7 right. It seems like you are just guessing rather than searching for the facts. Look up the terms.

*November 11, 2016*

**maths**

(1-3/5)x + 26 = 12/17x Solve for x.

*November 11, 2016*

**Problem solving**

Cannot draw here. Also, with your limited data, we don't know what you are supposed to do either.

*November 10, 2016*

**math**

3a - 4 < 5 add 4 to bot sides, then divide both sides by 3.

*November 10, 2016*

**English**

"Because" would be better than "in that." He was sad, because his father passed away.

*November 10, 2016*

**science**

Because of its small size.

*November 10, 2016*

**statistics**

(50*40) + (5*100) = ?

*November 10, 2016*

**statistics**

(60+85+92+80)/4 = ?

*November 10, 2016*

**Matb**

He has 3 animals with 4 legs and 5 animals with 2 legs. However, from your data, I don't know if the 4-legged animals are pigs.

*November 10, 2016*

**Math grade 6, four operations**

B = 38-S (B-4) = 5(S-4) Substitute 38-S for B in the second equation and solve for S. Insert that value into the first equation to solve for B. Check by putting both values into the second equation.

*November 10, 2016*

**Science**

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.

*November 10, 2016*

**math ( i need help asap ) pls**

Agree on all. To indicate greater than or equal to, you can use carat key (>) plus option to give you this, ?.

*November 10, 2016*

**Science**

No choices given. Cannot copy and paste here.

*November 10, 2016*

**health 7th**

Agree with all.

*November 10, 2016*

**algebra 1**

L = 2W 2L + 2W = 76 Substitute 2W for L in the second equation and solve for W. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.

*November 9, 2016*

**8thgrademath**

What geometric argument?

*November 9, 2016*