# Posts by PsyDAG

Total # Posts: 23,187

**Science**

It would help if you proofread your questions before you posted them. Do not know what color flowers the "plant" has, so I assume white. If so, I would guess B.

*December 12, 2016*

**math**

X - 3/8X - 2/5(1-3/8)X = $15 Solve for X.

*December 12, 2016*

**Math**

The median is essentially the 50th percentile. Think of the mean as a fulcrum or balance point. a) disagree b) disagree c) agree

*December 11, 2016*

**Sports**

Since this is not my area of expertise, I searched Google under the key words "law 'handling the ball' in the field of cricket" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=law+'handling+the+ball'+in+the+field+of...

*December 11, 2016*

**Chemistry needs help**

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

*December 11, 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 your later post.

*December 10, 2016*

**Probability**

http://www.mathwords.com/c/combination_formula.htm

*December 10, 2016*

**Probability (?)**

Lack Data

*December 10, 2016*

**Math (Polynomials)**

Welcome

*December 10, 2016*

**Math (Ooops)**

Sorry, B. https://www.mathsisfun.com/definitions/coefficient.html

*December 10, 2016*

**Math (Polynomials)**

4x^2+3x-3

*December 10, 2016*

**Algebra**

What is your question?

*December 10, 2016*

**math**

Cannot post distributions here.

*December 10, 2016*

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 12/24 * (12-1)/(24-1) = ?

*December 10, 2016*

**Anatomy and Physiology**

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. What are your best answers?

*December 10, 2016*

**Algebra, Solving inequalities**

1. Subtract 5h from both sides and add 16 to both sides. 2.Add 13 and subtract 4x from both sides. Looks like there is a typo somewhere. 3. Don't know. 6. Add 12 to both sides. 7. Divide both sides by 12. 8. When multiplying/dividing inequalities by a negative number, the ...

*December 9, 2016*

**Science**

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.

*December 9, 2016*

**Science**

lead

*December 9, 2016*

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A) (1-.12)(1-.29) = ? B) It is in your data, .07.

*December 9, 2016*

**statistics**

Z = (score-mean)/SD = (844-541)/101 = 303/101 = 3

*December 8, 2016*

**Math Probability Distribution**

It would help if you proofread your questions before you posted them. "lies between 57 - c and 57 - c" = 0 98% = mean ± Z (SD) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the ...

*December 8, 2016*

**Math Probability Distribution**

It would help if you proofread your questions before you posted them. "lies between 57 - c and 57 - c" = 0 98% = mean ± Z (SD) Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the ...

*December 8, 2016*

**Science**

Consult text or Google it. I searched Google under the key words "blood flow through body and heart" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=blood+flow+through+body+and+heart&ie=UTF-8&oe=UTF-8 In the future, you can find ...

*December 8, 2016*

**Science (?)**

No following. Cannot copy and paste here. Mars is smaller, so gravity is less.

*December 8, 2016*

**math**

The common denominator would be 50.

*December 8, 2016*

**Algebra 2(help please!!)**

(a) It is direct. (b) Knowing they are being observed may change behavior. (c) Sample = 10 students Population = all high school students (d) I would say none, because the sample is too small and b.

*December 7, 2016*

**Math**

You need to post the specific questions.

*December 7, 2016*

**math**

My son's name.

*December 7, 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 (.30) and its Z score. Insert data into above equation to solve for the score.

*December 7, 2016*

**Algebra**

Need some indication of twins' ages.

*December 7, 2016*

**Algebra**

It would help if you proofread your questions before you posted them. "$2.00"?

*December 7, 2016*

**Math**

The number ? is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter "?" since the mid-18th century, though it is also sometimes spelled out as "pi"...

*December 7, 2016*

**math**

T = .9(30) = ? P = .78(90) = ?

*December 7, 2016*

**Science**

No illustration. You cannotcopy and paste here. They are all related to reproduction.

*December 7, 2016*

**math**

More data needed.

*December 7, 2016*

**Math**

(1-.6)x = 240 Solve for x.

*December 7, 2016*

**maths**

8.5(128*81 - 125*78) = ?

*December 7, 2016*

**Math**

.6/6 = ?

*December 7, 2016*

**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 between the two Z scores.

*December 7, 2016*

**math**

No table. Cannot copy and paste here.

*December 6, 2016*

**math**

agree

*December 6, 2016*

**Math**

Disagree, assuming each block is 1x1, that gives you 16 blocks. by the way, 1/4 ? 20%, 1/5 ? 25%

*December 6, 2016*

**Math**

.3 * 450 = ?

*December 6, 2016*

**Science**

80 * 4/5 = ?

*December 6, 2016*

**Math**

agree

*December 5, 2016*

**attitude**

As far as I know, "teapoi" is not one of the tutors. Even so, I apologize for any hateful post.

*December 4, 2016*

**Maths**

M = 3N (M+10) + (N+10) = 80 Substitute 3N for M in the second equation and solve for N. Insert that value into the first equation to solve for M. Check by putting both values into the second equation.

*December 4, 2016*

**math**

The answer is right in front of you. "Skittles 30%"

*December 4, 2016*

**Math**

He could have just 6 insects. Or he could have 3 spiders and 2 insects.

*December 4, 2016*

**algebra**

Pythagorean theorem for right triangle. a^2 + b^2 = c^2 3^2 + 4^2 = c^2 Solve for c.

*December 4, 2016*

**Maths**

How can it be 125 and 295. To sum to 99, each must be less than 99.

*December 4, 2016*

**math**

Possibilities out of 36 are 1,3 1,2 3,1 2,1 1,1 2,2 6/36 = ?

*December 4, 2016*

**Math**

.6(150) + .75(200) + 130 = ?

*December 3, 2016*

**Math**

.6(150) + .75(200) + 130 = ?

*December 3, 2016*

**Mathematics**

1/70 = x/2100 Solve for x.

*December 3, 2016*

**Math**

27.30/17 = x/30 Solve for x.

*December 3, 2016*

**MATH**

No following given. You cannot copy and paste here.

*December 2, 2016*

**biology**

Look up each term in your text or Google.

*December 2, 2016*

**math**

No table.

*December 1, 2016*

**Math**

(1-1/4)x + 10*20 = 300 Solve for x.

*December 1, 2016*

**Math**

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 between the two Z scores.

*December 1, 2016*

**Math**

Area = width * height 35 = 5 * ?

*December 1, 2016*

**math (?)**

No Data

*December 1, 2016*

**math**

M = S + 20 M + S = 50 Substitute S+20 for M in the second equation and solve for M. Insert that value into the first equation to solve for S. Check by putting both values into the second equation.

*December 1, 2016*

**Math**

41 + 41/7 = Total cost Divide total cost by 2.

*November 30, 2016*

**Statistics**

H0: mean = 185 H1: mean ? 185

*November 30, 2016*

**math**

B = O + 1 12B + 20O = 108 Substitute O+1 for B in the second equation and solve for O. Insert that value into the first equation to solve for B. Check by putting both values into the second equation.

*November 30, 2016*

**Math**

540/45 = x/60 Solve for x.

*November 30, 2016*

**Math**

75, 93, 57, 39 Which one?

*November 30, 2016*

**VU**

(1-5/7)x = 500 Solve for x.

*November 30, 2016*

**math**

Z = (score-mean)/SD

*November 30, 2016*

**Math**

7.5/22 = x/13 Solve for x.

*November 29, 2016*

**Math**

7.5/22 = x/1313 Solve for x.

*November 29, 2016*

**math**

3x-2 = 91 Solve for x.

*November 29, 2016*

**Business 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.

*November 29, 2016*

**Science/Biology/Health and Social Care**

"If the body didn't have any energy," the organism would die.

*November 29, 2016*

**Statistics (?)**

What is your question?

*November 29, 2016*

**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*