# Posts by PsyDAG

Total # Posts: 23,478

**math**

I don't really understand it either. Possibly they are looking for the values that will not have a fraction of cupcake in the solution.

**math**

If I understand the question correctly: 6th, 12th, 18th steps

**English 2 please help**

Agree with all.

**maths (?)**

What is your question?

**statistics**

The variable is number of children, which is discrete. (You can't have half of a child, pregnancy does not count.) Values are 0 to ??

**Math**

It would help if you proofread your questions before you posted them. "5 ten times greater"?

**math (?)**

Table not available.

**Math**

10 + 7*1.5 ? 20.5

**algebra**

P = 4x for small square P = 4(x+2) for large square 4x+2 = 2(4x) Solve for x then x+2.

**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 (.99) and its Z score. Insert data into above equation and solve for score.

**Chemistry needs help**

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

**math (?)**

Cannot decipher your data.

**Statistics**

a) yes b) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 2/4 * (2-1)/(4-1) = ? c) 2/4 * 2/(4-1) = ?

**Algebra**

The vertical bars indicate absolute value, regardless of sign. 16/7

**probability and Stats**

SEm = SD/?n I could only find it from b.

**Maths**

Q1 — 1/6 Q2 — DK, more data needed, but would guess very unlikely Q3 — DK, more data needed, what was their past performance?

**Math**

Let x = ten and y = 20 cent coins x = y+12 .10x + .20y = 5.40 Substitute y+12 for x in the second equation and solve for y. Insert that value into the first equation to solve for x. Check by putting both values into the second equation.

**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.

**maths(?)**

Clarify question.

**math**

L = W + 11 2L + 2W = 106 Substitute W+11 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.

**Statistics**

It would be okay to compare the Z scores, but not the raw scores, from each test. In order to do that, you would have to know the mean and standard deviation of each test, assuming they were all normally distributed.

**math**

The empirical rule states that for a normal distribution, nearly all of the data will fall within three standard deviations of the mean. The empirical rule can be broken down into three parts: 68% of data falls within the first standard deviation from the mean. 95% fall within...

**Statistics**

(a) yes (b) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1/6 * 1/6 = ? (c) same odds (d) Either-or probabilities are found by adding the individual probabilities.

**Statistics**

Agree with all answers

**math**

D = 6M (D + 12) = 2(M + 12) Substitute 6M for D 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.

**Maths**

(500-5)/500 = ?

**Maths**

2/3x = 1/4x + 500 Solve for x.

**Science**

agree

**Discrete Math**

a) #red/total = ? b) If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. c) Either-or probabilities are found by adding the individual probabilities. d) (1-c)^5 e) 6/38 * (1-6/38) = ?

**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.

**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 related to the Z score. Multiply by 1100.

**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 related to the Z score. Multiply by 1900.

**math**

I will start you out. a) There are 36 possibilities. 6,2; 2,6; 3,5; 5,3 are the only combinations that = 8. b) P(even) = 3/6 = 1/2 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual ...

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. a) 3/6 * 3/6 = ? b) 1/6 * 1/2 = ? c) 3/6 * 3/6 = ?

**Math**

Sí, sí, c.

**math**

(a) 1/4 If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. (b) 1/4 * 1/(4-1) = ?

**math**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 4/12 * (4-1)/(12-1) = ?

**Math**

I don't know why you have the second step. 2s < $25 s < $12.50

**Math**

(24,710.40-22,464)/22,464 = % increase 1.(% increase) * 24,710.40 = ?

**math**

(-5)(-2) = 10

**math**

It would help if you proofread your questions before you posted them. [34+?] Also, online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.

**Algebra**

$6.50h = m h = 4.25

**math**

(1/12)x = 5/8 2/24x = 15/24 2x = 15

**Spanish**

Sorry, pressed wrong button. Agree, second one is incorrect Third is correct, but "yo" is redundant.

**Spanish**

No, trabajadora is a noun, not an adjective.

**Math**

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

**math**

W = 175/D W-5 = 4(D-5) Substitute 175/D for W in the second equation and solve for W. Insert that value into the first equation to solve for D. Check by putting both values into the second equation.

**Math (?)**

Cannot post flow chart. Even so, need to let us know the three numbers.

**Algebra**

agree

**STATISTICS**

(a) 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 that relates to the Z score. (b,c) Reverse process from proportion to Z score. Insert into above ...

**science**

True

**botany?**

Since this is not my area of expertise, I searched Google under the key words "biggest desert plant" to get these possible sources: https://www.google.com/search?client=safari&rls=en&q=%22biggest+desert+plant%22&ie=UTF-8&oe=UTF-8 In the future, you can find the ...

**algebra**

20 + .40(x-60) = C Insert cost and solve for minutes(x).

**algebra**

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 your later post.

**Spanish**

Don't have post here.

**Science HELP!!**

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**

If t = $6 and s = $3, and you buy 5 notebooks 3t + 2s ≤ $24 Do you want > 5 notebooks?

**Science**

Which science? Species?

**Ela**

Unless a specific problem is posted, we cannot help you.

**Drivers ED**

agree

**Science**

traction?

**algebra**

-15 + 5x + 4 = 5q - 11 5x = 5q - 22 x = q - 22/5 I assume this is what you wanted to know, but I am not sure, since you did not ask a question.

**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...