Sunday
February 14, 2016

# Posts by Sandy

Total # Posts: 756

Geometry
February 26, 2013

Geometry
1. Find the diameter of a circle with a circumference of 50 mm. Round your answer to the nearest tenth. a) 16.0 mm b) 26.4 mm c) 8.4 mm d) 33.5 mm 2. Find the area of the circle with the given radius or diameter. Round your answer to the nearest tenth. Diameter = 42.0 mm a) ...
February 26, 2013

Statistics
A simple random sample of 120 SAT scores ahs a mean of 1540. Assume that SAT scores have a population standard deviation of 333. a) Construct a 95% conf. interval estimate of the mean SAT score. b) Is a 99% conf. interval estimate of the mean SAT score wider than the 95% conf...
February 26, 2013

statistics
Accuracy of price scanners at Wal-Mart. The National Institute for Standards and Technology (NIST) mandates that for every 100 items scanned through the electronic checkout scanner at a retail store, no more than 2 should have an inaccurate price. A recent study of the ...
February 24, 2013

statistics
Accuracy of price scanners at Wal-Mart. The National Institute for Standards and Technology (NIST) mandates that for every 100 items scanned through the electronic checkout scanner at a retail store, no more than 2 should have an inaccurate price. A recent study of the ...
February 23, 2013

math
sam, pam, ken, and jen wrote each of their names on a slip of paper and placed them in a bowl.Sam was the first to randomly select a name from the bowl. What is the probability that he will select his own name? express answer as a fraction and a percent.(B)If sam selects Pam ...
February 22, 2013

statistics
otorola discovered that the average defect rate for parts produced on an assembly line varies from run-to-run and is approximately normally distributed with a mean equal to 3 defects per million. Assume that the goal at Motorola is for the average defect rate to vary no more ...
February 22, 2013

statistics
A local country club has a membership of 600 and operates facilities that include an 18-hole championship golf course and 12 tennis courts. Before deciding whether to accept new members, the club president would like to know how many members regularly use each facility. A ...
February 9, 2013

science
what is the main cause of global wind patterns?
February 5, 2013

science
Some parts of the atmosphere are warmer than others. This causes air particles to-------,which in turn causes the wind. Moves heat by conduction form convestion currents move by radiation become more dense. I am just having a hard time finding the answer to this question.
February 5, 2013

math
\$800 worth of tickets were sold.adult price is \$6.children is \$3 and seniors \$2. 90 adult purchase ticket,60 children purchase tickets.how many tickets were purchase at senior price and how would you write an equation and solve to find the solution? how do you explain the ...
January 23, 2013

ENGLISH !(:
the answer to which of the following groups of words is a clause is If the catcher dropped the ball. catcher is the subject, dropped the ball is the predicate dropped is the verb. The answer to the qestion What is the phrase in the following sentence I believe is a sports ...
January 21, 2013

math
john is think of a number. If you divide the difference of his number and 12 by 7, and then add 23, the result is 32. what is the number and can you explain your answer?
January 18, 2013

algebra
an investor invested a total of 1,100 in two mutual funds. One fund earned a 5% profit while the other earned a 2% profit. If the investor's total profit was 49.00 how much invested in each fund?
January 17, 2013

algebra
on a scatter plot how can you determine if driving speed and driving time show a positive, negative or no relationship?
January 15, 2013

social studies
List three continents that are located in both the northern and western hemisphere?
January 13, 2013

Finanical
4. An investor purchases a mutual fund share for \$100. The fund pays dividends of \$3, distributes a capital gain of \$4, and charges a fee of \$2 when the fund is sold one year later for \$105. What is the net rate of return from this investment?
December 19, 2012

Finanical
4. An investor purchases a mutual fund share for \$100. The fund pays dividends of \$3, distributes a capital gain of \$4, and charges a fee of \$2 when the fund is sold one year later for \$105. What is the net rate of return from this investment?
December 18, 2012

Chemistry
When 0.40 g of impure zinc reacted with an excess of hydrochloric acid, 127 mL of hydrogen was collected over water at 10 degress C The external pressure was 737.7 Torr. a) What volume would the dry hydrogen occupy at 1.00 atm and 298 K ? b) What amount (in moles) of H2 was ...
December 13, 2012

Chemistry
Compute the volume of helium at 1.0 atm and 298 K that will be collected if 2.5 g of 222Rn is stored in a container able to expand to maintain a constant pressure for 15 days. Assume that 222Rn decays to 218Po with a half-life of 3.824 days.
December 11, 2012

Chemistry
Health regulations stipulate that the amount of arsenate in drinking water be no grater than 10 parts per billion (ppb) arsenic. If the arsenic present is arsenate, AsO4^-3, what mass of sodium arsenate would be present in a 1.00 L sample of drinking water that just meets the ...
December 11, 2012

math
A cylindrical container has a volume of 226 cubic inches. the container is filled 3/4 of the way with water. To the nearest cubic inch, what is the volume of water in the container? How many more cubic inches of water is needed to fill the container? please explain.
December 6, 2012

Algebra
Please show me step by step if possible: Find dimensions of a rectanglar rug whose perimeter is 28 ft and whose area is 45 ft². The length (longer side) equal ___ft and width (shorter side) equal ____ft.
December 4, 2012

Algebra
Please show me step by step if possible: Find dimensions of a rectanglar rug whose perimeter is 28 ft and whose area is 45 ft². The length (longer side) equal ___ft and width (shorter side) equal ____ft.
December 4, 2012

math-urgent
Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&...
December 4, 2012

Algebra
Do anyone know what the domain and vertical asymptote is for: f(x)=4 ln(x)
December 4, 2012

math
Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&...
December 4, 2012

math
K= -1/-2.5 sorry for the mix up
December 4, 2012

math
Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&...
December 4, 2012

Algebra
Could someone please help me with this word problem? The City Zoo has different admission prices for adults and children. When three adults and two children went to the zoo, the bill was \$80.88. If two adults and three children got in for \$76.47, then what is the price of an ...
December 2, 2012

Algebra
Please show me step by step in finding the center and the radius of the circle, then graphing if possible: (x-3)²+y²=6 Thanks
December 2, 2012

Algebra
will you please show me step by step in solving: 1/2 log b + 3 log c. I need to express as a single log logarithm and if possible, simplify Thanks
December 2, 2012

Algebra
Please show me step by step on solving this problem? log₅(2x-9)+ log₅(x+2)= 1 Thank you I'm getting 2x²-5x-28=0 which is a empty set. Trying to make sure I'm correct if I am. Thanks so much for your help
December 1, 2012

algebra
ln x¹³ = (ln x)² please show me how to solve this step by step Thanks
November 25, 2012

chemistry
The molar volume of a certain form of solid lead is 18cm3/mol. Assuming cubic closest packed structure, determine the number of Pb atoms per unit cell.
November 3, 2012

chemistry
The hybridization of the lead atom in PbCl4 is...?
November 3, 2012

A solid, uniform disk of radius 0.250 m and mass 51.1 kg rolls down a ramp of length 4.60 m that makes an angle of 18° with the horizontal. The disk starts from rest from the top of the ramp. a)Find the speed of the disk's center of mass when it reaches the bottom of ...
October 31, 2012

INTRO TO PHYSICS
Each of the following objects has a radius of 0.174 m and a mass of 2.16 kg, and each rotates about an axis through its center (as in the table below) with an angular speed of 37.3 rad/s. Find the magnitude of the angular momentum of each object. >Hoop of thin cylindrical ...
October 31, 2012

INTRO TO PHYSICS
a) A simple pendulum consists of a small object of mass 3.3 kg hanging at the end of a 2.0-m-long light string that is connected to a pivot point.Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string makes a 4.5° angle ...
October 31, 2012

math
is y=0.005x^2+10 a fuction?
October 29, 2012

chemistry
Horxn = (4 mol)Hf(CO2(g)) + (6 mol)Hf(H2O(g)) - [(2 mol)Hf(C2H6(g)) + (7 mol)Hf(O2(g))] = -2909.8 kJ Solve for Hf(CO2(g)) in the above equation: Hf(CO2(g)) = [Horxn - (6 mol)Hf(H2O(g)) + (2 mol)Hf(C2H6(g)) + (7 mol)Hf(O2(g))] / (4 mol) = [(-2909.8 kJ) - (6 mol)(-241.8 kJ/mol...
October 24, 2012

college alegebra
√3x-2+√2x+5+1=0 Could this square root problem be solved by using a graphing TI-84 Plus calculator? If so, will you please tell me how to do it. Thanks
October 20, 2012

Math
Let boys=x and girls=x+16:- boys + girls =218 x + (x+16 =218 2x + 16 =218 x = (218-16)/2 = 101 Hence boys =101 and girls =101+16 Hope this helps
October 13, 2012

Math
Skanda wants to tack four posters on the bulletin board.he will tack the four corners of each poster,overlapping the sides of each poster a little. What is the least number os tacks that skanda can use?
September 23, 2012

psy315
a psychologist at a mental hospital was asked to determine whether there was any clear difference in the length of stay of patients with different categories of diagnosis. looking at the last 4 patients in each of the 3 major categories , the results in terms of weeks and stay...
September 14, 2012

math
A Ford Focus goes about 2 meters down the road for each revolution of its tires, which, when new, have treads about 1 centimeter thick. If it goes 80,000 km (50,000 mi) before its tread is gone, find the average thickness of tire lost durin each revolution. Compare this ...
September 11, 2012

Physics
A roller coaster starts from rest at the top of a steep incline. As it falls, should its velocity depend on how many riders are aboard? Use net work= change in kinetic energy to prove your answer.
September 6, 2012

Physics
A golf ball, dropped from 2 meters above a floor, rebounds to a height of 1.6 meters. What percentage of its energy of motion is lost in the collision with the floor?
September 6, 2012

math
Tap A fills a tube with cold water in 6 minutes. Tap B fills a tube with hot water in 8 minutes. If water is flowing out from taps A and B at the same time, how long does it take to fill the tubes?
September 5, 2012

Math
2X+2=8-X The answer I got was X=3. Is this correct?
August 29, 2012

Math
Mr. Carpenter sent his wife to the store to buy 200 square feet (A) of carpet, but he forgot to tell her the length (L) and width (W) of the carpet (A=L*W). How many different sizes of carpet can she get and still have 200 square feet of carpet?
August 21, 2012

design
1 is wrong, I chose that answer myself and found out it was incorrect, but 11 is correct, a size 4 would be too big, the patterns include room for a diaper. Number 8 is incorrect, reread the paragraph that begins with Any decoration should be... it's on page 7. This site ...
July 31, 2012

#8 is incorrect
July 31, 2012

design
July 25, 2012

MATH
LOLITA KEPT \$200 IN HER SAVINGS ACCOUNT FOR A YEAR. THE BANK PAYS 6 1\2% INTEREST PER YEAR. HOW MUCH INTEREST DID SHE RECEIVE AT THE END OF 1 YEAR
July 5, 2012

math
lolita kept \$200 in her savings account for a year, the bank pays 6 1/2% interest per year. how much interest did she receive at the end of the 1 year.
July 4, 2012

math
nancy borrowed \$900 from her credit union for 2 years. the interest rate for the lona was 7%. how much did she pay
July 4, 2012

geometry
An equilateral triangle has the area of 25 squared root of 3 squared. What is the height? Round answer to the one decimal place.
June 2, 2012

dressmaking
I chose D as well, and they said it was the incorrect choice.
May 29, 2012

Accounting
What is the payment of interest on july 1 assuming no previous accrual of interest . on january 1 a company issued \$326,000 9%, 5 year bond at face value.Intrest is payable semiannually on july 1 and january 1 what is the bond expense?
May 15, 2012

Chemistry
Consider the following reaction: H2(g) + I2(s) ---> 2HI(g) TriangleH = 51.9 kj (enthalpy) Calculate the standard enthalpies of reaction for the following reaction: 6HI(g) ---> 3H2(g) + 3I2(s) Thanks!
April 28, 2012

Math
How would you graph this piecewise function f(x) = x^2 if lxl < or equal to 1 1 if lxl > 1 Thanks Very Much!
April 4, 2012

dressmaking
I think that 1a,2b 3b 4c 5a 6a 7d 88 9a 10d 20b 11b 17b 18c 19b14b 15b
April 3, 2012

dressmaking
these are my answer ms sue
April 3, 2012

dressmaking
1(a 2(b 3(b 4(c 5(a 6(a 7(d 8(b 9(a 10(a 11(d 12(a 13(c 14(d 15(c 16(d 17(d 18(b 19(d 20(c
April 3, 2012

dressmaking
need to check my answer, exam 042020 which type of line is considered to be softening line in design
April 3, 2012

Biology
If you are looking at a flame burning in a pit, what are the physical and chemical process/changes? Thanks
April 3, 2012

Math
What is the domain of f(x) = √(x^2-2x-8) Thanks!
March 31, 2012

Chemistry
Nitrogen Dioxide , a pollutant in the atmosphere, can combine with water to form nitric acid. One of the possible reactions is shown here. Calculate delta ∆G° and Kp for this reaction at 25°C and comment on the spontaneity of the reaction. 3NO2(g)+H2O(l)--> 2 ...
March 29, 2012

Fundementals in desktop publishing
1: Which of the following are considered errors that should be counted? A. A word with incorrect spacing after it. B. A word with incorrect punctuation. C. An omitted word. D. All of the above. I choose : A.
March 22, 2012

math
To get a C in physics, a student must score an average of 70 on four tests. Scores on the first three tests were 63, 85, and 82. What is the lowest score the student can make on the last test and still get a C?
March 19, 2012

Math
I asked this question before sorry I I shouldn't ask it again. Express the following number in scientific notation: 23^941 How do i get the answer for this? on my graphing calc, i get an error overflow messasge when i try to compute it. what is the decimal number that ...
March 11, 2012

Math
what is the decimal number that comes before 10^1281? For example x.xxxx * 10^1281 How do i find out the decimal x.xxxx? Thanks For helping me!
March 11, 2012

Math
Express the following number in scientific notation: 23^941 How do i get the answer for this? on my graphing calc, i get an error overflow messasge when i try to compute it. THANK YOU!!!!!
March 11, 2012

Math
Mr. Rogers wants to fence in a rectangular garden next to a straight section of the Scioto River. He has 330 feet of fencing to do the entire job. He doesn’t need fencing along the river, and there is a 4.5 foot wide clearance for a gate at one end. What are the ...
March 10, 2012

Math
How many positions would be needed to represent 57^10,001 in ordinary decimal notation. Thanks!
March 10, 2012

politics?
what is gm bailout?
February 22, 2012

politics
what is the dont ask dont tell? and are there other related terms they use with this? thank you
February 22, 2012

Decorative Features
It's D, who wants a zipper in their under ware? I am getting most of the answers right. The one I can seem to understand because of how it is worded is #9. I have a learning disability and sometimes I can't process how a question is worded. I read the unit about ...
February 14, 2012

algebra. help!!
United States citizens living in Switzerland must pay taxes on their income to both the United States and to Switzerland. The United States tax is 28% of their taxable income after deducting the tax paid to Switzerland. The tax paid to Switzerland is 42% of their taxable ...
February 14, 2012

Titration
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va: Va = 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL.
January 23, 2012

science fair
how do you make the following sentence in a if...ans then statement? if you multitask the result won't be as good as you not multitasking depending on what you multitask. thank you
January 22, 2012

Writeacher
Thank YOU!!!
January 22, 2012

Writeacher
Thank you soooo much. you have helped me so much since yesterday, i really appreciate it especially since you helped me removew my doubtings. Again thank you.
January 22, 2012

science fair
maybe making them pat thier head and rub their stomach or hear a lecture and draw while youre hearing it and then answer questions on it
January 22, 2012

science fair
maybe making them pat thier head and rub their stomach or hear a lecture and draw while youre hearing it and then answer questions on it
January 22, 2012

science fair
Writeacher, its me again i just wanted to know if the experiment of the math test and music is enough for the multitasking project or should i include another experiment to prove the hypothesis. thank you soo much.
January 22, 2012

science fair
okay remove the gum...check now, do you think this is enough for the science fair or should i add another experiment? btw You are the best thank you sooooo much for your help Writeacher
January 21, 2012

science fair
should i take out the gum all together, or will the gum add more thought?
January 21, 2012

science fair
music during homework chewing gum during a test i had an idea to make a group to take a test with music and gum. another with gum only and music only and then another group with nothing. and make each group go through each situation and see which situation actually helps. but ...
January 21, 2012

science fair
thank you and i am starting to have second decisions. do you think i should change my idea? im in 9th grade what do you think?
January 21, 2012

science fair
Does multitasking help a person or mess up all tasks?(referring to human reaction) is there any way to make this topic more complex and difficult?
January 21, 2012

auditing
<11{1[3(02)02]}> Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence (Points : 1)
January 8, 2012

math
Pranav reduced the size of a rectangle to a width of 7 inches. What is the new height if it was originally 49 inches wide and 28 inches tall?
December 19, 2011

math
There are 57 students in class of 6th and 7th graders. There are twice as many 6th graders. How many 6th graders?
December 7, 2011

Inter. acct.
You have been retained as a consultant by the company’s Audit Committee of the Board of Director’s, and asked to research three separate issues. First the typical acquisition costs associated with land purchases. Use the facts presented in Exercise 10-1 to illustrate...
December 5, 2011

chemistry
Ti(s)+2Cl2(s)-TiCl4(s) compute theoretical yield in moles 8 mol Ti, 8 mol Cl2
November 25, 2011

chemistry
For A pressure of 25.7 inHg would be how many kilopascals? I did the following, is this correct? 25.7 inHg X 25.4 mm/1in X 101.325 KaPa/760 mmHg = 87.0301 Kapa So: KaPa = 87.0
November 24, 2011

chemistry
A pressure of 25.7 inHg would be how many kilopascals? I received an answer but the person who helped me used mmHg. How do I convert inHg into mmHg to solve my questions. Help please
November 24, 2011

chemistry
For A pressure of 25.7 inHg would be how many kilopascals? This is the answer I received: 25.7 mmHg x (101.325 kPa/760.0 mmHg) The mmHg cancel each other out So 98.659 kPa My Question is I started out with inHg, and not mmHg. Would it be the same since I'm starting with ...
November 24, 2011

1. Pages:
2. <<Prev
3. 1
4. 2
5. 3
6. 4
7. 5
8. 6
9. 7
10. 8
11. Next>>