# Posts by ann

Total # Posts: 1,522

Physics HELP!!
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. The magnitude of each of the charges is 3.66 μC, and the lengths of the sides of a triangle are 2.15 cm. Calculate the ...

Statistics
Assume that the average annual salary for a worker in the United States is 300,000- and that the annual salaries For Americans are normally distributed with a standard deviation equal to \$7,000. Find the following: A. What percentage of Americans earn below \$22,000? B. What ...

science
Explain how to measure the volume of a rock by water displacement?

science
40 centimeters cubed of dry sand is added to a graduated cylinder containing water, the level of the liquid rose 15 centimeters cubed on the scale. What is the volume, in centimeters cubed of air in the sand?

science
A 10 centimeters cubed sample of salt having a mass of 8 grams is added to 20 centimeters cubed of water having a mass of 15 grams. What is the mass of the mixture?

chemistry
A sample of one liquid has a mass of 60 grams and a volume of 50 centimeters cubed; a sample of a second liquid has a mass of 30 grams and a volume of 40 centimeters cubed. They are put in a container and mixed. Can you determine what the mass and the volume of the mixture is?

English1C
I need help writing a fallacy essay about The Wrong InequalityBack to Article » By DAVID BROOKS

math
Please solve this word problem, It will take at least 360 points for Kiko"s team to win the math contest. The scores are 94,82, and 87, but one of Kiko's teammates lost 2 of those points for an incomplete answer. How many points must Kiko earn for her team to win the ...

physics
How do I find the acceleration on a velocity time graph when the graph has an irregular shape.

math

physics
A car traveling 28 mi/h accelerates uniformly for 6.7 s, covering 555 ft in this time. What was its acceleration? Answer in units of ft/s 2

algebra
What is a simpler form of the radical expression? ^4sqrt 81x^20 y^8 A, 3|x^5|y^2 B. 9|x^25|y^4 C. 9x^25|y^4| D. 3x^5|y^2|

Physics
367.5

math
dr.chen told miranda that her new puppy needs a diet that includes at least 1.54 ounces of protein and 0.56 ounce of fat each day to grow into a healthy dog. each cup of good start puppy food contains 0.84 ounce of protein and 0.12 ounce od fat. each cup of sirius puppy food ...

AP Chemistry
4 All of these

chem
what is the difference between a bunsen burner and a lab burner?

physics
6.6

math
5a-4=6a+12

Psychology
Where are selfish impulses? Examples of social conscience?

math
you invested \$4000 in two accounts paying 2% and 9% annual interest, respectively if the total interest earned for the year was \$150, how much was invested at each rate. \$_was invested at 2% and _\$ was invested at 9%

math
x+y+5z=18 x+y+7z=26 x-4y-7y=-35 its a solve a 3 equation solve the system

Psychology
Thank you, Ms. Sue.

Psychology
How do you think your psyche has evolved to meet the challenges of your society and culture in this time and place? Can some give me some examples so that I can get an idea?

maths
x+2a is a factor of (x^3+2(a-2b)x^2-b(8a-3b)x+6ab^2)

ivy tech
Assuming that the data are normally distributed with a mean of 45 and a standard deviation of 3.25, what is the z-score for a value of 40?

budget
budgeting should begin with

Trigonometry
Solve each triange given the indicated measures of angle and sides b=43degrees y=36 degrees a=92cm

COMM 215
When we drive in city traffic, you need to watch the traffic around your carefully. The choices are Pronoun shift in Number, Pronoun shift in Person, Ambiguous Reference, No Error. I picked Pronoun Shift in Person. Is this right?

COMM 215
The capitalized verb agrees with the subject: One of my friends LIKE this brand of coffee. It is True/False. I picked False.

physical science
what are the number of moles of phosphorus in 15 moles of Ca3(PO4)2

mth 121
can you fine the dimensions of a rectangle with a perimeter of 94cm if the length is 2 less than six times the width

Statistics
I know the formula. How do you work backwards?

Statistics
The confidence interval below for the population variance is based on the following sample statistics: n = 25, x-bar = 31.1, and s = 4.2. 9.29 < standard deviation squared < 42.82 What is the degree of confidence?

Statistics
No wonder I keep getting the wrong answer. Thank you so much for helping me how to get the answer. Now I know how to do the next problem which is similar to this problem.

Statistics
But, I'm suppose to use the normal distribution approximation to the binomial distribution.

Statistics
The probability that a radish seed will germinate is 0.6. Estimate the probability that of 130 randomly selected seeds, exactly 90 will germinate. Note: I keep getting the answer wrong.

Chemistry
Thanks

Chemistry
so would my answer be 15ml How much 0.300 M NaOH is required to completely neutralize 30.0 ml of 0.15 M HClO4 Clue: M1V1=M2V2

Chemistry
How much 0.300 M NaOH is required to completely neutralize 30.0 ml of 0.15 M HClO4 Clue: M1V1=M2V2 I still don't get it to i times .300x30.0 then times .300 x.15 i just don't understand what i am actually suppose to multiply

Chemistry
I still don't get it to i times .300x30.0 then times .300 x.15 i just don't understand what i am actually suppose to multiply

Chemistry
How much 0.300 M NaOH is required to completely neutralize 30.0 ml of 0.15 M HClO4 Clue: M1V1=M2V2

english
Do you think that paying attention to your audience, purpose, and content improves the influence of your writing? Why or why not?

english
Identify a serious error you find challenging to overcome in your own writing. What method will you use to avoid this error? Would you recommend the method to others? Why or why not?

algebra
Choose the best response to descrive the polynomial. -4x^3-2x^2+2x A) The coefficients are all negative B) The leading coefficient is negative C) It is a binomial D) It is of degree four. I was thinking it is c could someone tell me if I am right! Thanks!

algebra
Synthesis: Find a polynomial for the shaded area of each figure. 21t+8 is on top of the outer box and 4t is on the left side of the outer box. On the inter box there is 3t-4 and 2t on the left side of the inter box. the area between the outer box and the inter box is shaded. I...

english
D is the answer, collective noun is a special class, name groups [things] composed of members [usually people]. Examples: army audience,board,cabinet,class,committee, company,corporation etc...

US History and Constition
The Monroe Doctrine proclaimed that the Americas should be free from future European colonization and free from European interference in sovereign countries' affairs. It further stated the United States' intention to stay neutral in European wars and in wars between ...

Algebra
Simplify. Remember to use absoulute value notattion when necessary. If a root cannot be simplified state this. {(7b)exponent4}^(1/4) I did something wrong when I did it.

math
Calculate the monthly payment necessary to retire a 3-year simple-interest loan of \$12,000 if the simple interest rate charged is 9%. Round your answer to the nearest cent.

child care
ans test003061 peen foster

algebra
Solve using the eliminattion method. Show your work. If the system has no solution or an infinite number of solution, state this. -2x-8y==42 -4x+6y=-18

Algebra
Solve using the elimiation method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x=6y= -2 -8x+6y= -26

math
Megan and Sam together take 12 minutes to wash a car. Washing the car by herself took Megan 21 minutes. How long would it take Sam to wash the car?

algebra
Solve using the elimination method. Show your work. If the system has not solution or an infinite number of solutions, state this. -2x-8y=-42 -4x+6y=-18

algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x-6y=2 -8x+6y=-26

algebra
solve 5x^2-11=0

geometry
is my answer correct, please? thanks very much M = measurement If M angle 1 = 60 degrees, then m angle 3 + m angle 5 = what is answer? i put 90 degree for angle 3 which is right angle + 60 degrees = 150 given: m angle 1 = m angle 5 in statements/reasons. diagram was + with ...

geometry
16.3 is the length of the base rounded to the nearest tenth. 3.14 x 7.5 x 7.5 x 12 = 2119.50 16.28 x 16.28 x 8 =2,120.3

Math
you've been to jog for 1 hr a day 3 times a wk, if you jog 5.5 miles per hr, how far will you jog each wk

Science
Suppose we allowed each person 1000m^3 of living space in a large building, with ceiling height 3 m. To the nearest order of magnitude, how many 1000m high buildings would have to be built to house the entire population of 8.5 x 10^14 people on the energy-limited Earth, if ...

maths
Water is leaking out of a barrel. In the first hour, it lost half the number of litres it held, plus one litre. In the second hour, it lost half the remainder plus another litre. In the third hour, it lost half the remainder again, plus a further litre; and during the fourth ...

English
We

English
Is the sentence We playes always score. correct or would you say Us players always score?

english

english
in a horse drawn wagon and modifies the word books

english
In the sentence Mary brought library books to them in a horse-drawn wagon. What is the prepositional phrase and the word it modifies?

english
I think it is in the early 1900's and the word it modifies is wagon

english
in the sentence She invented the book wagon in the early 1900's. what is the prepositional phrase and word it modifies?

English
in the sentence Mary Titcomb was a librarian from Maryland. What is the prepositional phrase and the word it modifies?

AlgebraB
Help! I have to graph my answer to this problem: ADFG has vertices D (–2, 4), F (–3,1), and G (–1, 2). Find the vertices of the image after the rotation of 180° about the origin.

physics
a small pith ball carries a charge of -1.3 uc. how many excess electrons does this represent?

Physics
Here's the question again that I am trying to get help with because I can't figure it out and I got one answer, but I really couldn't understand it. Help please! A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation...

physics
Thank you Elena. I really appreciate your halp.

physics
A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.

Pre Algebra
Thanks PsyDAG. This was the very first ferris Wheel so that's why it was so big and held a lot of people. I wasn't given any other information.

Pre Algebra
Tickets on the ferris wheel cost .50 cents. At least how many tickets were sold? There are 36 cars on the ferris wheel that holds 60 people per car. Suppose every ticket holder rode for two turns of the wheel. At least how many turns did the wheel have to make? I think it'...

Math
A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.

English
3 John and Eric 4 memebers 5 chambered nautilus 6 sweaters 7 cabinet 8 coral 9 we 10 trophy

English
ENGLISH HOMEWORK.. Need to write a antecedent for each Pronoun that is Capitilized in sentences.? Need to write a antecedent for each Pronoun that is Capitilized in sentences 1. Some of the Students brought THEIR lunches to the beach. 2. Ken took Meg home on HIS new motorcycle...

math
describe transformation state number of turns describe left and right behaviors sketch graph of function 1. f(x)=x^4-1 2. f(x)=-x^5+1 3. f(x)=-x^3=3x^2-2x

child care
i would say c.

Chemistry
Which of the following combinations would require an electrolytic cell? coat aluminum onto iron coat iron onto lead coat copper onto tin coat calcium onto iron Please help.

Finance
Answers for a 10 year us treasury bond has a 3.50 % interest rate, while a same maturity corporate bond has a 5.25 % interest rate. Real interest rates and inflation rate expectations would be for the two bonds. if default risk premium of 1.50 percentage points is estimated ...

math
Double my tens digit to get my ones digit double me and I am less than 50

Miguel buys a truck in Texas, then moves to Washington. A year later, he is driving his truck in Oklahoma, and causes an accident by trning into another car, whose driver is from Florida. In what states will the other driver be able to sue Miguel? State the reasons for your ...

algebra
thank you very much henry , I really appreciate the help. ann

algebra
could you please show me how to do this problem? Bob rows 6 miles downstream in 1 hr, joe rows 6 miles upstream in 2 hr. joe rows 1 mile per hour faster. a. what is each of their speed, bob 6/1=6mph joe 6 + 1 = 7mph is this right?? b. what is the current speed?? downstream R...

algebra
yes you were right about the zero. Thank you so much for showing me how to do it. ann

algebra
could you please show me how to do this problem? ballfield costs 14,850,00 to build. the cost per city resident to build it will be based on last census. New census shows population increased by 2200 people, which reduced the cost per resident \$75. what is the current ...

Chemistry
When the following solutions are mixed together, FeSO4 (aq) + Csl (aq): What precipitate if any will form, Write the balanced equation, write the complete ionic equation and wriye the net ionic equation?

algebra
Reiny, thank you so much, I really needed that help.

algebra
what is x short leg for right triangle when given long leg b is 1/2x +11 when given hypotenuse c is 2x + 1 i put (-1/2x + 11) +(2x + 1) = x and came out with 20 but that did not work out when squared A + b = C. I estimated x/a = 8, then b = 15 and c = 17 and that works 8^2 + ...

dressmaker
when paper pattern pieces are dovetailed in cutting layout they're placed so they A-all face the same direction. B fit closely together to save fabric.c have their grain lines on the bias. d are lying face down on the fabric

Math
In 1995 the united states recovered 21% of its municiple solid waste through recycling up from 17% in 1990. Let y represent the percentage recycled and let x equal the number of years since 1990. Find the linear function that fits this data.

Math
Use the principle of square roots, (x-2)^2=25

Math
Reiny, Im sorry but where is the 1/16 coming from?

Algebra
y=x^2-3x-10, Find the y-intercept and any x-intercept

Math 11
oh okay, thanks.

Math 11
perform the indicated operation and give the answer in simplified form. ((x-1/x+1)-(x+1)/(x-1))/ ((x-1/x+1)-(x+1)/(x-1)) =0 ?