# 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.

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

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 (?)

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 (?)

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 (?)

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

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

Math (?)

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 (?)

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

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