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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?

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