# Posts by PsyDAG

Total # Posts: 23,316

**Math (?)**

Lack data. Why do you multiply by 4?

**maths**

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.

**Science Biology**

Each mutation has an equal probability of occurring.

**Math**

1. x > 17 2. 3x ≤ 21 x ≤ 7 3. 5a < 20 a < 4 2t+8 ≥ -4t-4 6t ≥ -12 t ≥ -2

**Math**

19

**Statistics (?)**

It would help if you proofread your questions before you posted them. No values given. 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 ...

**science**

D = r * t D = 65 * 7/3 = 151 2/3 151 2/3 = 65t 151 2/3 = 43t Compare the two.

**Math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Move decimal place 5 points to the right. 1.42*10^5 = 142,000

**psy/315 (?)**

No table.

**value**

From your data: x + 9 = 2 1/4x = 2.25x Solve for x. However, this does not solve to be a whole number. Typos?

**Math**

Assuming that the person has to completely refill an empty tank: 35d + 19.95d + 19*3.40 = b

**Chemistry needs help**

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

**Science**

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

**Statistics**

-1Z < µ < +1Z

**Math**

Since the increase for any two years is never greater than 100, what would you say?

**Biology**

the sex cells, sperm or egg.

**Algebra**

Use Pythagorean theorem. Triangles needed for what? For one diagonal, only gives two triangles.

**Health!**

I would suspect that it is close to zero, since their blame and aggression is typically expressed toward others. https://www.google.com/search?client=safari&rls=en&q=anitsoical+personality+disorder+suicide&ie=UTF-8&oe=UTF-8

**science**

It would depend on the type of statistics. https://www.google.com/search?client=safari&rls=en&q=statistical+diagrams&ie=UTF-8&oe=UTF-8

**statistics (?)**

It would help if you proofread your questions before you posted them. You cannot copy and paste here. What do you want to find?

**mathematics**

.9x = 27 Solve for x.

**Science, Biology**

Do they eat the same food? If so, they would compete for the same source. However, the effect would depend on how plentiful the food source was.

**College algebra**

-2.4+(5.2) = 5.2-2.4 = 2.8

**Math (?)**

It would help if you proofread your questions before you posted them. Lacking data.

**Math**

2 Twelve packs (24) = 7.98 Case (24) = 6.88 Compare.

**Math**

3.99 * 2 = 7.98

**Math**

8/3 < 12/4

**Algebra**

-(3x-2y) -(5x-4y) = -3x+2y-5x+4y = 6y-8x

**math**

Diameter = 2 cm, so 2 cm width would only get 5 disks. Thus 4cm is minimum, but will get 10 disks.

**math**

Cannot diagram here. 36/4 = 9

**science**

agree

**Math**

If you change each answer to decimals, the answer will become clear. For example: .83 < .67

**math**

Distance traveled to and distance from a particular goal from a particular starting point (negative relationship).

**Math (?)**

Lacking data.

**Math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 12/13 * (12-1)/(13-1) = ? (Assuming that the person does not want a double portion of any topping)

**8th grade math**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. When multiplying/dividing, exponents are added/subtracted respectively. 1.4*10^9/1.28*10^4...

**psychology**

I would go with A.

**Algebra**

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. Online "^" is used to indicate an exponent, e.g., x^2 = x squared. When multiplying/dividing, exponents are added/subtracted respectively. (6*10^-5)(3*10^4...

**Math**

√1156 = 34 4 * 34 = ?

**Statistics**

It would help if you proofread your questions before you posted them. Values not given.

**math**

(1-.28)x = 126 Solve for x.

**algebra**

That ± (plus or minus) 25 ft. 25 * .01 = .25 ft 24.75 - 25.25 ft

**math**

S = A + 12 6A + 4S = 548 Substitute A+12 for S in the second equation and solve for A. Insert that value into the first equation to solve for S. Check by putting both values into the second equation.

**math**

Assuming P(X=0) means neither ordered coffee = (1-.8)(1-.8) = ? If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

**the tail**

You cannot copy and paste here.

**Math**

75/1000

**Mathmatics**

2x-1 = 4x^2-5x+2 4x^2 - 7x + 1 = 0

**algebra homework help**

From the way you originally have it stated, I would agree.

**Math**

4,000,000 = 40 hundred thousand .00040 = 40 hundred thousandths

**Math**

We cannot draw a grid here.

**algebra**

Length = √(3,136*4)

**Math**

420%

**Science**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. 100,000 m^3 = 100*1000 m^3

**Algebra 1A**

Materials + labor < $150

**Statistics**

Since the order of choice is not important, you would use combinations.

**Forensic Psychologist**

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.

**Statistics**

What is the value of the sample mean? 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 ...

**Statistics**

To calculate it yourself: 95% = mean ± Z (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 (±.025) and its Z score. Insert data into above ...

**Statistics**

Question incomplete. Need to be more specific.

**Math**

.75π * .2π = .15π^2

**Math needs help**

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

**Math**

What is your question?

**Math (?)**

Lacking adequate data.

**MATH**

6/8 > 2/4 > 1/4

**Math**

1.0825 * $88 = $?

**Math**

cot@/cot@ = 1 tan@/tan@ = 1

**Math (?)**

What is your question?

**math**

Impossible. An integer is one numeral (8, 9, 4, etc.). Max sum of two consecutive integers (8+9) = 17. Typos?

**maths**

(17-x)(14-x) = 108 Solve for x.

**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 (.1003) and its Z score. Insert data into equation above.

**Geometry**

Would you ever try to plan any building without relying on geometry? How about surveying? That is just a start.

**Biology**

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

**Maths**

Area = length * width = 6.1*8.1 = ?

**statistics**

No data. Cannot copy and paste here. However, I will give you a start. Ho: mean1 = Mean2 Ha: mean1 ≠ mean2

**Drivers ED**

Welcome

**Drivers ED**

agree.

**Math**

It would help if you proofread your questions before you posted them. From your data, he spent 1/4 on books. Typos?

**Pre-Algebra**

Do you have any choices? rotated, similar, positions, total?

**Drivers ED**

agree. http://dor.mo.gov/pdf/Chapter3.pdf

**english**

It would help if you proofread your questions before you posted them. "Vancouver, Canada" is a complete subject. "vancouver canda is in british columbia" is a complete sentence.

**Health And Physical Education**

It would help if you proofread your questions before you posted them. Uncomfortable what? "one BBBB"? The only defense mechanism is a.

**Algebra**

We cannot draw a diagram on these posts. However, the maximum are would be closest to a square.

**Statistics**

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 for each Z score. For C, use P(±.40) to find Z and insert into equation above.

**maths**

It would help if you proofread your questions before you posted them. # black balls/ total balls

**Health!**

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

**algebra**

mean = ∑x/n 93 = (95+92+98+76+100+x)/6 Solve for x. x ≥ ?

**Math**

g = 52 - c 2c + 4g = 128 Substitute 52-c for g in the second equation and solve for c. Insert that value into the first equation to solve for g. Check by putting both values into the second equation.

**Health**

I disagree. You are doing this to "maintain my #1 seed on the tennis team."

**math please help**

450 + .07s ≥ 681 + .04s Solve for s.

**Math**

adult size = 5.5 * 15/.75 = ? Child size = 5.5 * 15/.5 = ?

**Math**

7 * 4 = 28 ft^2 Each plant requires 1 ft^2. What does that tell you?

**psychology (?)**

What choices? You cannot copy and paste here.

**Science**

Which weighs more?

**Statistics**

"at least 4" = 4, 5, or 6. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. Online, “*” is used to indicate multiplication to avoid confusion with “x&#...

**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.

**Biology**

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

**statics**

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. However, here is a start. If the events are independent, the probability of both/all events ...

**maths**

M = Et - 5 Er = 2Et Er + Et + M = 47 Substitute Et-5 for M and 2Et for Er in the third equation and solve for Et. Insert that value into the other equations to solve for M and Er. Check by putting all values into the third equation.

**Math (?)**

Lack data. Also cannot graph on these posts.

**Math**

Since this is not my area of expertise, I searched Google under the key words "what does skip half an increment mean in graphs" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=what+does+skip+half+an+increment+mean+in+graphs&ie=UTF-...