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Posts by PsyDAG

Total # Posts: 23,309

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Second step x4/36 = (2/3)/36

math (?)
lack data

Math
8 for $5 = 4 for $2.50 That is 100% profit on those 4 oranges, assuming that the other 4 oranges are not just thrown in the garbage.

Maths
L = 2W+3 2L + 2W = 150 Substitute 2W+3 for L in the second equation and solve for W.

math
48 hours = 2 days What is Ro?

math
If inversely proportional, if x is increased by 50%, y should decrease by 50%.

Math
State you specific problem(s) and we will do our best to help.

Math (?)
How many green tiles are there?

Math (?)
No mosaic shown. Cannot copy and paste here.

Math
Area of circle = π(r^2)

Math (?)
What following?

maths (?)
Does "total area" include the top and bottom or just the sides? Painted area = 2*80*48

Stats
disagree

math (?)
What is your question?

Biology
Use the Punnett square. https://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl Remember that it is a recessive gene.

Math word (?)
Does general = student?

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

Biology (?)
Do not understand what you are asking.

Biology
https://www.google.com/search?client=safari&rls=en&q=piunnett+square&ie=UTF-8&oe=UTF-8&gws_rd=ssl

Bio
But only the female can be a "carrier," having the sex-linked trait in the genotype, but not in the phenotype.

Bio
Sex-linked traits are X-linked traits. What does that tell you?

Bio
DNA makes up the code for all living things.

math
Find the mean first = sum of scores/number of scores Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance. I'll let you do the calculations.

SCIENCE PLZZ HELP!!!
Read bobpursley's answer again... very carefully.

physical science (?)
No above mentioned.

Math
Do you want the discounted price? If so: (1-.55)$16.99 = ?

Math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .65^4 = ?

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. When multiplying/dividing, exponents are added/subtracted respectively. 4^3 * 4^12 ≠ 4^36 (wrong) x^11/x^4 = x^7 (right)

math
Right

Biology
What various types of microscopes would you be using?

Math
1. Agree 2. disagree 6, 7, 10, 13. agree 15, ?. disagree 18. agree 19. disagree 20. 129*.25 = 32.25 Rather than typing "(my answer)," just use "***" to indicate that. It will save you lots of typing.

math
7x−2y=15 x+y=6 Multiply second equation by two and then add the equations.

Drivers ED check my answers
It has been over a half-century since I got my license, so I can't answer all the questions. 2. agree 3. DK 4, 5, 7. Agree 8. Disagree 9. DK 10. agree 11. DK 12. agree 13. DK 14. disagree 15. All of them 16. disagree 17, 18. agree 19. "IPDE"? 20. DK 21, 22, 23, ...

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

math
Does "them" apply to dozens or individual bananas?

math
1.06x = 75 Solve for x.

math
decimal of .25?

Math
To figure the third side, use Pythagorean theorem. 5^2 + 12^2 = h^2 This gives you the perimeter of the triangle. However, since they come in a "variety of lengths", you need more information. Also how high is the stand? What about the opening to sell the products?

Math
800 = π (r^2) h Decide on either the height or radius and solve for the other.

Math
What is your question?

English
I'll point out problems, and let you correct them. Better to use left and right rather than "westward" or "eastward," since you don't know what direction the person is facing. Toward which armpit? Does the person ever return to original standing ...

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

Probability
P(1 or 4 or 5 or 6) Either-or probabilities are found by adding the individual probabilities. That is how Ms Sue got the answer.

Probability
If "circle is yellow," there is no probability of getting a red number.

algebra
What are your choices? It would be essentially a straight line going from lower left to upper right.

math
Cannot make probability tree on these posts.

Pre alg
disagree, what is "-2x+5x"?

Literature (?)
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. What book/story does this relate to?

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

my son's math help please
It doesn't matter how many slices. 2/3 of a cake is larger than 1/3 of a same-sized cake.

English
Don't know the story, but Holmes is noted for his careful and scientific solutions.

Math
5280 * .2 = ?

Maths
It would help if you proofread your questions before you posted them. From your data, it could be 863, 881, 845, 827 or 809.

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 "...

Math
Average = mean = sum of scores/number of scores I'll let you do the calculations.

ALGEBRA
It would help if you proofread your questions before you posted them. Where did you get 3/11? From your data, I would get 1/5(letters) * 1/2(coin) = 1/10

pre algebra
agree

algebra (?)
We cannot see the histograms. You cannot copy and paste here.

Geometry
Circumference = 2πr

algebra
10.5x = 7.5x + 30 Solve for x, then insert into one of the two equations to find y.

math
1. disagree, when dividing, exponents are subtracted. 2. disagree, when dividing, exponents are subtracted. 3. disagree, what is 4^-2? 4. disagree, anything to the Zero power = 1.

math
What are your answers? 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. When multiplying/dividing, exponents are added/subtracted respectively.

Math
Can get 7 with 4,3 or 3,4 or 5,2 or 2,5 or 6,1 or 1,6 out of 36 possibilities = 6/36 Use the same logic for above or below 7.

Math
7.5 gallons/cubic foot Convert to feet. V = 18 * 8 * 12 = 1.5 * 2/3 * ! = ?

Maths
M = 3D M+5 = 2.5(D+5) Substitute 3D for M in the second equation and solve for D. Insert that value into the first equation to solve for M. Check by putting both values into the second equation.

Math
8/44 = ?

Math
5/12x = 25 Solve for x. Subtract 25 from x. He will not have any chickens after 3 months.

science (?)
What plants? Biological categories? https://www.google.com/search?client=safari&rls=en&q=plant+classification+chart&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=4y5DV43PBOSD8QfJ8YbYBg

Math (?)
No figures. Cannot copy and paste here.

Math
Or you could try it this way. P-4 = A 6A = 4P Substitute P-4 for A in the second equation and solve for P. However, something seems askew here. Typos?

Math
6A = 4P A = 4/6P = 1/3P P = A + 4 Substitute P/3 for A in the third equation and solve for P.

math
N = 6E

maths
Cannot graph here.

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

Biology
What are your answers? 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
1543 = 16t^2 Divide both sides by 16 and then get square root.

Math
To get product (one negative) of -36, can have 18,2 or 9,4 or 3,12. 12 - (-3) = 15

math
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a. 1/3 * 1/3 = ? b. increase, 1/2 * 1/2 = ?

math
36,336 and 63,363

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

math
D = L - 28 1/3L = 4/5D Substitute L-28 for D in the second equation and solve for L.

Math
I didn't even know there were "12th grade admission exams" when I was teaching. The content is likely to vary with the school district.

Statistics
Z = (score-mean)/SD A,B. 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 scores. Multiply by 100. C. Use same table to find Z for .02. Insert in above equation...

find the number
What is your answer? 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.

Algebra
I will not even get into the math. It would help if you proofread your questions before you posted them. First, you say "summarize it in one-two paragraphs," but you have four. "each country’s payroll" More than one country? Your lack of comma use is ...

Business Communication
Are company databases external?

Business Communication
Even with the errors in capitalization and punctuation, I find it readable, a. However, I agree with Writeacher that your need to avoid developing sloppy habits for business communications.

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 1. What is x*x? 2. What is -3m*8? 3. Agree. 4. What is 5b*6B? 5b*10?

math
1. Disagree. 2. disagree. 3. disagree. 4. disagree.

Math (?)
No picture. You cannot copy and paste here.

Algebra(?)
Need more data. Typos? ABCD?

Pre algebra
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/2 * 1/6 = ?

Geometry
Pythagorean Theorem a^2 + b^2 = L^2 24^2 + 10^2 = L^2

Math/ Ratios (oooops)
I'm sorry. That was past tense, "did." If so, add A and H.

Math/ Ratios
A = H (A-23)/(H-7) = 3/4 Substitute H for A in the second equation and solve for H. Insert that value into the first equation to solve for A. Add (A-23) and (H-7).

math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 2*2*2 ≠ 12 However, unless you have more typos, I get 5 too.

atlantic high
Pythagorean Theorem a^2 + b^2 = c^2 a^2 + 4^2 = 8.5^2 Solve for a.

Math
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. 4(2/4) = 2 2*4 = ?

MAth
Add 3.6 to both sides and divide by .9 to solve for x.

science
What are your choices? Digest? Eat? Consume?

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