# Posts by PsyDAG

Total # Posts: 23,423

**algebra**

In the first pair, none match, because if x is negative, y will be negative. Did you miss a negative sign? The second problem is wrong. Do what Lily suggests.

**Science**

Sit different distances from the fulcrum.

**Science**

A. Have the beaker standing on a table. B. Wash the toes with water or something that will neutralize solution A, being careful to avoid the glass particles.

**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.

**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**

1/2 + 3/8 = 4/8 + 3/8 = ?

**8th grade math-exponents**

I don't. I still get: (x/2)^7/(x/2)^6 = x/2 If you do not have a typo, there might be a typo in the text answers. Ask your teacher.

**8th grade math-exponents**

Since they are all the same, let x represent x/2. Online "^" is used to indicate an exponent, e.g., x^2 = x squared (x^3 * x^4)/(x^3)^2 When multiplying/dividing, exponents are added/subtracted respectively. (x^3 * x^4) = x^7 (x^3)^2 = x^6 Do you have typos?

**Algebra 2**

Z = (score-mean)/SD Z = (230-240)/4.8 = -2.08 Use the same equation for the second score.

**math**

Necesita hacer su pregunta en inglés.

**Math**

do the calculations

**Science**

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

**math (?)**

Typo? How can a digit be 30 times any other digit?

**Math**

How do you want it rearranged?

**Maths**

42/7 = 6 2L = 3*6 = 18 2W = 4*6 = 24 Since P = 2L + 2W, each side will half of the above values.

**Psychology**

Agree, "making excuses" is rationalization.

**English**

I, his, him and he are pronouns. You missed some. Go over it again.

**Math**

You only have five digits. Assuming some can be repeated without using decimals: Largest = 8,885,320 Smallest 2,000,358

**Statistics**

mean = ∑x/n mean * N = ∑x Men ∑x = 20*178 = 3560 Women ∑x = 30*164 = 4920 Combined = (3560+4920)/50 = ?

**Psychology 101**

success

**Math (?)**

Have ? Left.

**math**

typos? (2700-1200)x = 30

**English**

I assume it is study time. It indicates how much time you need to allocate per week, month and semester. How much time will you set aside per each of those time intervals?

**math**

Since we don't know your daily activities, we cannot help you.

**Math**

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

**Math**

(215.5-133.25)/215.5 = .38167 = 38% Do the same process for the second problem.

**English grammar**

"Talked" if event is past, and "will talk" if you expect it in the future.

**Health**

Which does not have a learning component?

**algebra - theory of numbers**

You need to clarify your question.

**math**

3d + 3t = 9 3d + 2t = 8 Subtract second equation from first, then multiply by 5.

**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 values for the Z scores.

**Maths**

X + Y + Z = 1750 x = 4Y Y = 2Y 4Y + Y + 2Y = 1750 However, that does not come out exactly to whole numbers. Do you have any typos? It would seem that the zero is extraneous.

**Language Arts**

The Inuit go fishing in frail skin canoes called kayaks.

**psychology**

deviate, innovate, criticize, dissent?

**Math**

Regardless of its length, the minute hand moves 360 degrees in one hour (60 minutes).

**value**

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

**Math**

W = T + 6 Area = 1/2 WT Substitute T+6 for W in the second equation and solve for T. Insert that value into the first equation to solve for W. Check by putting both values into the second equation.

**math**

Divide 576 by 9, then multiply by 4 for muffins and 5 for cookies. 256 muffins 320 cookies

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. a^2 + b^2 = c^2 Cannot find x unless already know value of a and c. You only know c.

**math- study question for final**

This is what I would do. Z = (score-mean)/SEm SEm = SD/√n P ≤ .05 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. How does it compare?

**Algebra**

L = S + 47 L = 6S - 3 Substitute S+47 for L in the second equation and solve for L. Insert that value into the first equation to solve for S. Check by putting both values into the second equation.

**Statistic**

You may have an answer, but you don't even indicate the question.

**statistics**

SEm (standard error of the mean) = SD/√n

**math**

1. disagree 2. agree 3. r = d/t 4. agree

**math geometry**

L = 2w + 12 L * w = 80 Substitute 2w+12 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.

**Math**

1. disagree 2. agree 3. agree

**Math**

The first is the absolute value, regardless of the sign. The second is negative.

**stats**

Z = (score-mean)/SEm SEm = SD/√n SD = √variance Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for each and the Z score. Insert into above equation.

**aps rk puram .math**

There are only three possibilities — 123, 246, 369. Which fits?

**math**

How many edges does a cube have? Multiply that number by (18-10).

**Math**

a. 180/36, 252/36 b. 252/180 c. 10(252/180) No diagram.

**statistics**

Probability answer never > 1. If Z = 2, P > 2 = .0228

**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?