# Posts by PsyDAG

Total # Posts: 23,471

**math**

It would help if you proofread your questions before you posted them. Level of significance? 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/...

**stats**

Grade points times credit hours divided by total credit hours. [(5*4) + (4*3) + (3*1) + (2*3) + (1*4)]/15 = ?

**science**

Holland? What are your choices?

**Math**

Cannot draw diagrams here.

**maths**

q = a + 15 3a + 2q = 3 1/8 Substitute a+15 for q in the second equation and solve for a.

**Math**

You are welcome.

**Math**

Yes

**Math**

1/8

**Math**

For every 3 parts of blue, you need 4 parts of yellow.

**Math**

Area = 1/2 height * base 48 = 1/2 height * 12 Solve for height.

**math**

Circumference = π d Convert to cm. Area = 10 circumference

**Statistics**

Variable = number of children per family Can a family have a half of a child? Possible values for a family = 1, 2, 3, 4....

**Math**

93

**algebra**

1.4x + .25 = 1.99 Solve for x.

**math**

j = 8/5m j - m = 390 Substitute 8/5m for j in the second equation and solve for m. Insert that value into the first equation to solve for j. Check by putting both values into the second equation.

**Math HELP!**

3/4 > -5/6 -1 3/4 < 3/4 2 3/4 > 2 4/6

**Science (?)**

Need more data. 100,000 km per what time unit? Sometimes Earth is close to Mars, when it's making a pass, and other times it's far away, at the other side of the track. The minimum distance from the Earth to Mars is about 54.6 million kilometers. The farthest apart ...

**Biology**

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

**Statistics (?)**

Lack of data. What is your question? Assuming n stands for number in sample and S indicates standard deviation, it would be nice to know the mean for each group.

**biology**

disagree with last two answers.

**MATH**

Es mejor escribir en inglés.

**MATH(?)**

No numeros aqui. No puede copia o goma aqui.

**Psychology**

How is this psychology?

**Math**

At $.01 difference for each pencil, you need 200.

**math**

60 + 10m

**algebra**

420,000

**Science needs help**

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

**maths**

7x = 4x + 9 Solve for x.

**math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 5(4+3) * 6 = 210

**math**

W = 2L - 8 W * L = 172 Substitute 2L-8 for W in the second equation and solve for L. Insert that value into the first equation to solve for W. Check by putting both values into the second equation. Then use Pythagorean theorem. W^2 + L^2 = diagonal^2

**Math**

5 and -5, the magnitude of a real number without regard to its sign.

**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 later post.

**Math**

The same. High minus low still the same.

**math (?)**

What about the hundreds place? x95, x84, x73, x62, x51 Need more info.

**math**

F = M - 240 M - 260 = 2F Substitute M-240 for F in the second equation and solve for M.

**algebra (?)**

What is your question?

**Maths**

(1-4/9)x = 45 Solve for x, then subtract 45 from that.

**Math**

N + 3

**math**

Radius bisects square, so use Pythagorean theorem. x^2 + x^2 = 2x^2 = 12^2

**math**

12^2

**math**

Use Pythagorean Theorem. s^2 + s^2 = 12^@

**math**

Pythagorean theorem again 12^2 + 9^2 = d^2

**math (?)**

Which two corners?

**math needs help**

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

**Science**

1-3 Right 4. Rejected 5. Lack of thiamine causes beriberi. New set of chickens fed whole grain or polished rice.

**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. Cannot draw diagrams on these posts.

**English (?)**

equals what?

**Math**

Right, x = 18 mean = ∑x/n Therefore mean * N = ∑x 14 * 5 = 70 Which 5 scores will = 70?

**Math**

Subtract 8x from both sides, then divide both sides by -4.

**Math**

You do not need to use all four operations ("at most"). 33*3 + 3/3 = 100

**Math**

Assuming that 10.5 is the height of the pictures, that is what I would do.

**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.

**Math**

Right

**Algebra Age**

J = 3A J+15 = 2(A+15) Substitute 3A for J in the second equation and solve for A. Insert that value into the first equation to solve for J. Check by putting both values into the second equation.

**Math**

I will do two for you to show the process. 2) 97/100 3) 36/2

**Math (?)**

What is your question?

**math**

Cannot graph on these posts.

**Math**

40/7 = x/20 Solve for x.

**Math**

Although each chosen color was the most likely, the majority of the time (55%) they will be wrong.

**science**

Sexual reproduction involves a chance combination of half the chromosomes from each parent. It is impossible to tell how it effects the chances for survival for AN organism, but with severe environmental changes, it increases the chances that some members of the species will ...

**english speech**

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.

**MATH help asap**

You need to post the specific problem, so we can give an adequate response.

**Math (?)**

It would help if you proofread your questions before you posted them. Second car speed?

**Math**

10/3 = x/.5 Solve for x.

**Math**

In the two hours, first car has traveled 70 miles. 55x = 70 + 35x Solve for x. 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.

**math**

54/18 = 3

**Science**

Every question answered brings up new questions. Can you think of a better way than the inquiry process?

**Science**

Since this is not my area of expertise, I searched Google under the key words "How Can Nitrogen Be Obtained From Ammonia Gas? " to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=How+Can+Nitrogen+Be+Obtained+From+Ammonia+Gas%3F&ie=UTF...

**Maths**

It would help if you proofread your questions before you posted them. You are missing a number between - and /.

**statistics**

5 * 10 * 6 * 8 = ?

**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.

**Science**

Since this is not my area of expertise, I searched Google under the key words "light bulb watts and volts" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=light+bulb+watts+and+volts&ie=UTF-8&oe=UTF-8&gws_rd=ssl In the future, you ...

**Math (?)**

What graphs? Cannot copy and paste here.

**Math**

one

**math**

431,205,601

**Algebra**

22.50 = (1-.25)p Solve for p.

**Science**

...or predator.

**Science**

It matches the background, so they are less likely to be detected as prey.

**Math**

Just think of Arctic Circle, where the sun is up 24 hours a day during the summer.

**Math**

Correlation does not necessarily mean causation.

**Math**

Convert to decimals to clarify. .6 + .7 = 1.3 lbs 1.3/.8 = ?

**Geometry**

Have no idea about length of line. Cannot copy and paste here.

**math**

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 8 + 12p ≤ 140 Solve for p.

**stats**

Do you know the 68-95-99.7 rule? Approximately 68% of scores in normal distribution are within one standard deviation (34% on each side of the mean), 95% within 2 SD, and 99.7% within 3 SD. Z = (score-mean)/SD You can also find table in the back of your statistics text labeled...

**profit and loss (?)**

It would help if you proofread your questions before you posted them. What is your question?

**Science PLEASE HELP**

Since this is not my area of expertise, I searched Google under the key words "what functions do individual cells perform that are similar to the functions of our bodies?" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+...

**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.

**math**

Assuming all rows have the same number of seats: 600/36 = 16.67 = ?

**MATH**

The one boy could be born first, second, third or last, 4 ways. The rest will be girls. Cannot do a tree diagram here.

**Statistics**

P(65+) = .2 P(<65) = .98 P(2<65 of 6) = .98^2 * .2^4 = ? Cannot construct probability distribution here.

**Math**

Specific weight is weight per unit volume. 540/(5)^3 = ? g/cc

**Algebra**

A = C + 4 9A + 5C = 76 Substitute C+4 for A in the second equation and solve for C. Insert that value into the first equation to solve for A. Check by putting both values into the second equation.

**math**

mean = ∑x/n Since you just want change you can ignore direction. Use absolute values. Disagree

**math**

Have more confidence in yourself.

**math**

Agree with answer. Why are you not sure of your addition?

**math**

12 - 3 + 10 - 15 = ?

**algebra 1**

-3*4 = -12 A negative times/divided by a negative is positive. -12/-6 = 2

**algebra 1**

disagree

**math**

123,456

**algebra 1**

agree