# Posts by PsyDAG

Total # Posts: 23,417

**Maths**

(5*24)/20 = ?

**Statistics**

It would help if you proofread your questions before you posted them. I assume you are using "5" instead of "=". Z = (mean1 - mean2)/standard error (SE) of difference between means SEdiff = ?(SEmean1^2 + SEmean2^2) SEm = SD/?n If only one SD is provided, ...

**Alegbra**

When multiplying/dividing, exponents are added/subtracted respectively. (3^2)(3^3) = 3^5 = 3*3*3*3*3 = ?

**Alegbra**

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.

**psychology**

What are your choices? at the back of the eye? consisting of rods and cones?

**Math (?)**

No plot. Cannot copy and paste here.

**statistics**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. .5 * B = .28 Solve for B.

**statistics**

(7+1)/10 = ?

**Math**

Cannot sketch on these posts.

**math**

Right

**math**

5/20 = x/40 To solve for x, multiply both sides by 40, then divide the left side by 20.

**Pre- algebra help please anyone**

Welcome

**Pre- algebra help please anyone**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. When multiplying/dividing, exponents are added/subtracted respectively. x^9/x^2 = x^7

**math 6th grade**

Cannot post a plot here. Also, what is your question?

**Algebra**

It would help if you proofread your questions before you posted them. If a "camera takes two pictures in each rotation cycle," it will take 50 cycles to take 100 pictures.

**Algebra 1 Polynomials**

A includes B and C.

**Algebra 1 Polynomials**

From my examples, A is correct.

**Math**

2a(b+3+6bc)

**Math**

Reiny is right. I apologize for a double goof.

**Math (Ooops)**

Forgot that each lemon gives 2 tablespoons. 72/2 = 36 lemons 36 * $.33 = $11.88

**Math**

16 tablespoons = 1 cup using 4.5 cups = 72 tablespoons 72 * $.33 = $23.76

**Math**

Process: 2(3x+5) + 2(5x-2) = 6x + 10 + 10x - 4 = 16x+6

**Math**

4O + 6G = 2.62 7O + 5G = 2.66 Multiply first equation by 5 and second by 6. 20O + 30G = 13.10 42O + 30G = 15.96 Subtract first equation from second. 22O = 2.86 O = .13 Take it from there.

**math**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. (9-2)^2 + (7-10)/5 = 49 - 3/5 = 49 - .6 = 48.4 If it is: (9-2)^2 + 7 - 10/5 = 49 + 7 - 2 = 54

**Algebra 1**

300 = $9.10x x = 32.97 rounded to 33 hours out of approximately 40 * 4 = 160 hours worked per month.

**Writing**

No, the sentence is fine as is.

**Algebra**

Use same process indicated in your previous post.

**Writing**

No, 3 just changes from future to past tense. 5

**Algebra**

Online "^" is used to indicate an exponent, e.g., x^2 = x squared. Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown. When multiplying/dividing exponents, you add/subtract respectively. (5.5*10^2)(2.9*10^10...

**maths**

x - 4/7x - (1/3*3/7)x - (2/3*3/7*4/7)x = $40 x - 4/7x - 1/7x - 24/147x = $40 Solve for x.

**psychology**

How about "In cults, followers trade off liberty in order to gain acceptance.

**Math**

Since I have no idea where "O" is, I cannot help you.

**Algebra**

What is the beam made of?

**biology**

The patellar reflex or knee-jerk (American spelling knee reflex) is a stretch reflex which tests the L2, L3, and L4 segments of the spinal cord. As long as the injury is above those segments, the knee jerk will be evident.

**math**

Circumference = 2?r = 2(3.14)35 Cost = circumference * .44 * 4 I'll let you do the calculations.

**Math**

The mentioning of specific spending goals, which might effect the respondent directly, probably influenced the responses.

**Statistics**

The bar graph could be a probability distribution, but the three categories would not. The worse and better categories do not indicate how much worse or better the times are.

**Math (?)**

No Graph. Cannot copy and paste here.

**psychology**

Do you know the definitions of chemical, evolutionary, clinical and behavioral?

**STATISTICS**

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. 1) 14/20 * (14-1)/(20-1) = ? 2) 14/20 * 6/(20-1) = ? 3) Same as 2. 4) Yes, the total amount of balls would remain the same.

**Algebra (?)**

I agree on 1 and 2, but lack data on the later ones. Figures are not shown. You cannot copy and paste here.

**Statistics Maths**

It would help if you proofread your questions before you posted them. You need to put your equation on one line. Also, what the the first "=" signify? From what you have written: N = 3000 - 7.3(50) Solve for N.

**Science (?)**

What are your alternatives?

**Math**

Area = bh/2 Amt Paint = bh/2(.2) quarts Insert values and calculate.

**Stat**

1) 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 related to the Z score. 2) Insert values into above equation and solve for score.

**Maths**

Volume = side cubed (.5^3)x = 3^3 = 3*3*3 = 27 .125x = 27 Solve for x.

**Math (?)**

What is the specific question?

**Algebra**

48 + 11 = ?

**mathematics (?)**

It would help if you proofread your questions before you posted them. "a straight road observes" nothing. What is your question?

**Math**

agree

**mathematics**

one dollar = 1.2 euros 250 = 1.2 * 250 Calculate.

**Math**

1 ft^3 = 12 inches^3 = 12*12*12 inches = 1728 cubic inches 111(1728)/455.9 = ?

**Math**

3 for the sides and 1 for the base.

**Math**

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

**math**

1 Kiloliter = 1000 liters 720/1000 = ?

**Math**

Assuming that he walks the middle if the path, then his radius = 21m Circumference = 2?r 5C = 5(2?r) Insert values and calculate.

**Maths**

13,000/5,000 = 2.6 round to 3

**math (?)**

What are your choices?

**Math**

3/28 If it was 3/27 = 1/9

**math**

16 ounces = 1 pound $.80/16 = ?

**Math (?)**

What is your question?

**math**

It would help if you proofread your questions before you posted them. How far is the cyclist traveling?

**Science**

In one hour, the car will travel 90km.

**stats**

a. .10 * .15 = ? b. .27 * (1-.15) = ? Use similar process for c and d.

**Stats**

Use same process for ±.30.

**Stats**

Use method indicated in previous post.

**Stats**

Z = (score-mean)/SD Look in the back of your statistics textbook for a table called something like “area under normal distribution” to find the proportion/probability (.40) and its Z score. Insert data into above equation and solve for score.

**math**

mean = ?x/n 75 = ?x/3 ?x = 225 mean = (225+55)/4 = ?

**Math**

a - 50% = .5a .5a + .5(.5a) = ?

**Psychology**

In classical conditioning, the unconditoned stimulus (US) is one which reflexively causes a response. One example is putting something into your mouth causes salivation. In this case the unconditioned response (UR) is the response to a US presented alone, the salivation. A ...

**Genetics**

Using the Punnett square, 1/4 children will have the disorder. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events. A. 1/4 * 1/4 = 1/16 B. (1-1/4)^3 = (1-1/4)(1-1/4)(1-1/4) = ? Use ...

**Math**

Cannot create frequency table on these posts.

**Social Studies**

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

**Maths**

(42*30) - (40*28) = ?

**Maths**

Cannot sketch here.

**Biology**

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

**science**

For one, there is not an infinite supply. Secondly, they contribute to increased CO2 in the atmosphere and other pollution.

**math help now plez**

You cannot copy and paste here.

**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**

Assuming that 48 in^2 shows, that probably is 6 by 8 in., meaning that the width of the frame is 2 in.

**Psych**

The group designations would depend on your hypothesis. If you hypothesize that COLD would increase/decrease errors, then the students in the cold group would be the experimental group and those in the warm group would be the control. If the hypothesis was for the warmth, the ...

**math**

2,067

**math (?)**

No parallelogram shown. Cannot copy and paste here.

**Math Word Problem**

.33 * 603 = 199

**math**

12 = 3R R = 4 12 + x = 2(4+x) = 8 + 2x 4 = x 12 + 4 = 16

**math (?)**

What is your question?

**SS Help!(?)**

No graph. Cannot copy and paste here.

**math**

It would help if you proofread your questions before you posted them. I assume "1/1/4" is 1 1/4. (1-.10)(1.25*42000 + 10*22000) = ?

**Algebra**

Good for you!

**math (?)**

What pattern? Cannot copy and paste here.

**Math**

a = b + 5 a + b = -1 Substitute b+5 for a in the second equation and solve for b. Insert that value into the first equation to solve for a. Check by putting both values into the second equation.

**Science**

Agree

**Statistics**

Z = (score-mean)/SD Look in the back of your statistics textbook for a table called something like “area under normal distribution” to find the proportion/probability (.10) in the smaller portion and its Z score. Insert data into above equation and solve for score.

**Science**

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

**Esol**

Welcome

**English**

Agree

**geometry needs help**

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

**Math**

Assuming the half-bracket is a typo: 2 6/10 + 1 7/10 - 8/10 = 3 5/10

**science**

70/20 = x/230 Solve for x.

**Algebra**

Let the first integer be x-2, then middle integer is x and the third is x+2. (x-2)(x+2) = 12x + 9 X^2 - 4 = 12x + 9 x^2 - 12x - 13 = 0 (x+1)(x-13) = 0 11 * 15 = 12*13 + 9