Thursday
August 28, 2014

Posts by anonymous


Total # Posts: 69,893

need help1 what function to use? math
I think it is tan3=30000/l ,l =30000/tan3 theni thnk u can cntinue
May 25, 2014

physics
An athlete stretches a spring an extra 15.9 cm beyond its initial length. How much energy has he transferred to the spring
May 25, 2014

statistics
Fill in the blank in the sample below if the variables are independent in the sample like product do not like product old 10 7 young 40
May 25, 2014

7th math
If the actual figure is a rectangle that is 120 meters by 400 meters, what are the dimensions of a scale drawing in centimeters?
May 25, 2014

Technology
What are some examples of video effects, such as sepia?
May 24, 2014

Precalculus
Transform the quadratic equation to a standard form. 4x^2-y^2-24x-10y+11=0 My answer: 4(x-3)^2 - (y+5)^2 = 0 Therefore, this is a degenerate conic section, right?
May 24, 2014

Precalculus
I know I posted this already but.. I don't understand what exactly is the answer, since the answer key shows the intersection of the circle and hyperbole at (-5,0) What about (7.5,0)???? By the way the graph has one intersection point... How do you know the correct answer...
May 24, 2014

business communication
I wanted to welcome you asap to our little family here in the states. Its high time we shook hands in person and not just across the sea. Im pleased as punch about getting to know you all,and I for one will do my Level best to sell you on america rewrite in hong kong english
May 24, 2014

Technology
What are video effects?
May 24, 2014

Algebra 1
Simplify the following rational expression: 25 - x^2/x^2 -3x - 10
May 24, 2014

Math
Marvin was supposed to make three payments of $2000 each—the first one year ago, the second one year from now, and the third three years from now. He missed the first payment and proposes to pay $3000 today and a second amount in two years. If money can earn 4.5% ...
May 24, 2014

Algebra 1
Answer: 3w+7
May 24, 2014

Algebra 1
Simplify the following rational expression: 6w^2 + 11w - 7/6w - 3
May 24, 2014

Precalculus
Calculate solution set. x^2+4y^2=68 xy=8
May 24, 2014

Precalculus...repost.. The tutor didn't quite answ
Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when I plugged -7.5 in for...
May 24, 2014

Math helpppp
Answer
May 24, 2014

Math
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial ...
May 24, 2014

math
if there are 45 pieces of fruit and there are twice as many bananas as there are apples. How many of each kind of fruit are there?
May 24, 2014

Precalculus
Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when I plugged -7.5 in for...
May 24, 2014

Grade 10 English
i need 3 points of tragedy between the book the Stone carvers and the great gatsby.... i need to write a compasrion essay of tragedy between the two books. please and thank you
May 24, 2014

maaattthhhh
What are the mean, median, mode, and range of the data set 18, 19, 20, 21, 23, 26, 26, 26? mean = 22.4; median = 22; mode = 26 mean = 22.4; median = 26; mode = 22 mean = 26; median = 22.4; mode = 24 mean = 23.4; median = 22; mode = 26 2. Given the data 21, 13, 13, 37, 13, 23, ...
May 24, 2014

economics
A New Hampshire resort offers year-round activities: in winter, skiing and other cold-weather activities; and in summer, golf, tennis, and hiking. The resort’s operating costs are essentially the same in winter and summer. Management charges higher nightly rates in the ...
May 24, 2014

physics
4.95 raise to power 20
May 24, 2014

physics
two forces of magnitude 8N making an angle of 30 and 120 with +xaxis . FInd the y component of reultant
May 24, 2014

HELP MATH !!
the 2nd question is a ?
May 23, 2014

Math
2.45?
May 23, 2014

Math
20. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 1.64 hours b. about 134.00 hours c. about 2....
May 23, 2014

Science
Five groups of rats are fed identical diets except for the amount of vitamin A that they receive. Each group gets a different amount. After three weeks on the diet, the rats are weighed to see if the amount of vitamin A received has affected their weight. Independent Variable...
May 23, 2014

Science
No duh. I did. How's that supposed to help me? -.-
May 23, 2014

Science
What about that?
May 23, 2014

Science
12. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he's going to create and experiment to find out if there is something better. a. type of tissue b. Justin c. amount of tissue d. mess of the snots the tissue can ...
May 23, 2014

Math
2. B
May 23, 2014

Science
5. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he's going to create and experiment to find out if there is something better. What is 1 constant? a. type of tissue b. Justin c. amount of tissue d. mass of snot ...
May 23, 2014

Science
How can you measure the angle of incidence and refraction with a protractor? If not, what are some tools I can use which are found at home?
May 23, 2014

2 questions?
What is the surface area of a sphere with a radius of 4 meters rounded to the nearest square meter? 50 m2 101 m2 201 m2 *** 268 m2 What is the volume of a sphere with a radius of 4 meters rounded to the nearest square meter? 67 m3 201 m3 268 m3
May 23, 2014

Bar Graphs
Do the bars on bar graphs need to have spacing between them or can they be right next to each other?
May 23, 2014

Algebra
x(yp) =
May 23, 2014

Statistics
y
May 23, 2014

economics
what are welfare payments or consumer subsidies
May 23, 2014

Physic
The position of a mass on a spring is given by x = (7.6 cm) cos [2 π t / (0.82s)]. Where is the mass at t = 3.1 s? (Answer: 1.45cm) Answer is provided above. Please show all work on how to get the answer. Thank you.
May 23, 2014

Math
In this activity, you will design and conduct a survey. Choose a topic for your survey. 1. Collect your data. 2. Summarize the results with a graph and a description. When they say "Summarize the results with a graph," do they mean that I display the results with a ...
May 23, 2014

math
A bank wishing to determine the average amount of time a customer must wait to be served took a random sample of 100 customers and found that the mean waiting time was 7.2 minutes. Assuming that the population standard deviation is known to be 15 minutes, find the 90% ...
May 22, 2014

LA
What are some Disney movies that portray the American dream?
May 22, 2014

Sports
Are board games sports?
May 22, 2014

Physic
The maximum speed of a mass attached to a spring is vmax = 0.438 m/s, while the maximum acceleration is 1.53 m/s2. What is the maximum displacement of the mass? (Answer: 0.125m) Answer is provided above. Please show all work on how to get the answer. Thank you.
May 22, 2014

English
Which of these sentences has a missing antecedent? Although my sister is a swimmer, I don't know anything about it. When Trina and Rachel went to the mall, she drove.
May 22, 2014

math
Explain Yvonne's mistake in the following problem. 8x + 6x + 2 = 16x
May 22, 2014

statistics
A bottling commpany produces bottles that hold 10 ounces of liquid . Periodically, the company gets complaints that their bottles are not holding enough liquid. To test this claim, the bottling company randomly samples 25 bottles and finds the average amount of liquid held by ...
May 22, 2014

math
Mr chen deposits a certain amount in a bank if the interest of the bank decreased from 3.75% to 3.5% per annum mr chen's interest decrease by 50$ in a year find the sum of amount he deposits
May 22, 2014

Math
A stadium manager has signed five acts this year with a combined revenue projection of $1,000,050. The cost for these is expected to average $85,000 per act. How much profit margin does the stadium expect this last year?
May 22, 2014

Algebra
(4j^2)^2
May 22, 2014

Algebra
Factor 3x^2 + 2x - 13
May 22, 2014

Statistics
Coaching companies claim that their courses can raise the SAT scores of high school students. But students who retake the SAT without paying for coaching also usually raise their scores. A random sample of students who took the SAT twice found 427 who were coached and 2733 who...
May 22, 2014

CHEMISTRY
250
May 22, 2014

Business
Are there any similarities between the characteristics demanded of an entrepreneur and those of a professional athlete? Would an athlete be a good prospect for entrepreneurship? Why or why not? Do you agree with authors Coté and Piff that those of higher social class ...
May 22, 2014

chem
18.024l
May 22, 2014

chem
The VoLume of a gas is 15.0 L when the temperature is 75.0°C. If the temperature is changed to standard temperature without changing the pressure, what is the new volume?
May 22, 2014

Help me? Thanks~
Okay. sorry/
May 22, 2014

My Answers.
1.A 2.C 3.D 4.D 5.B 6.B 7.D 8.A 9.C 10.B 11.C 12.C 13.A
May 22, 2014

Science--worked hard, check my answers sum1?
1. What do bone marrow and the epidermis have in common? They are both sites of new cell formation. They both contain structures that assist the body in cooling down if overheating occurs. They both contain or are associated with sensory neurons. They are both involved in ...
May 22, 2014

Chemistry
The heat of combustion of methane is -890 kj per mole. How much heat will be produced in the combustion of 6.25 mol of methane?
May 22, 2014

Algebra
An electronics store is deciding how to price one of its products. The equation P = -25d^2 + 500d predicts the total profit P as a function of the product's price in dollars d. What price will produce the highest total profit?
May 22, 2014

English
No one saw Dad and me waiting in the queue. No one saw Dad and I waiting in the queue. Which sentence is correct?
May 22, 2014

Math
Your credit card has a balance of $1000 and an interest rate of 21%. Each month you make the minimum requirement of $20. During January 10 through February 9 billing period you pay the minimum required payment on january 25th. find the average daily balance, finance charge, ...
May 22, 2014

Check my answers? thank you.
I think you're guessing. What's the function of the skeletal system? To move the body, right? For 6, not ALL infectious agents are living. What about viruses?
May 22, 2014

Check my answers? thank you.
I said 2 is wrong, not 1. 6 is not A. Aren't bacteria living organisms? Perhaps you should do a bit more research on viruses.
May 22, 2014

Check my answers? thank you.
2 and 6 are wrong.
May 22, 2014

Algebra
What are the solutions of the equation 18x^2 - 25x - 3 = 0? A. -1/9,3/2 B. 9, 3/2 C. -9,2/3 D. 1/9, -3/2
May 21, 2014

algebra
Use a calculator to evaluate an ordinary annuity formula A = m 1 + r n nt − 1 r n for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) $150; 5%; 40 yr A = $
May 21, 2014

Algebra
You take a three question true-or-false quiz. You guess on all the questions. What is the probability that you will get a perfect score?
May 21, 2014

Science--check my answers.
1. Which of the following effects would you expect if red blood cells were shaped like neurons? They would not be able to move as easily through capillaries. **** They would more easily carry out gas exchange in the alveoli. They would not need to be transported through the ...
May 21, 2014

Precalculus
Thank you, Reiny! :)
May 21, 2014

Precalculus
Find the values of x and y. Matrices.. [-4 2 3 5 3 5 2 -3 1] TIMES [2 x 5] EQUALS [9 38 y] It is difficult for me to type the matrices in but.... The first matrix is 3x3 consisting of -4,2,3 in the first row.. 5,3,5 in the second row ......2,-3,1 in the third row... Then ...
May 21, 2014

algebra
A video rental company offers a plan that includes a membership fee of $6 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $48 per month for unlimited DVD rentals. If a customer borrows enough DVDs in a month, the two plans cost the same amount...
May 21, 2014

Math
A video rental company offers a plan that includes a membership fee of $6 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $48 per month for unlimited DVD rentals. If a customer borrows enough DVDs in a month, the two plans cost the same amount...
May 21, 2014

math
A section of a hiking trail begins at the coordinates (-7, 5) and follows a straight path that ends at the coordinates (3, 9). What is the rate of change of the hiking trail?
May 21, 2014

Algebra
Suppose you roll a red number cube and a yellow number cube. What is the probability of rolling any matching pair of numbers? (Hint: Add the probability of each of the six matches.)
May 21, 2014

health
What is bone strengthening?
May 21, 2014

Science help!!!!
cvbhytresdfg
May 21, 2014

math
What does the word rational coordinates Mean? What are they used for and what is a real world problem that can help me understand it?
May 21, 2014

Science/Health
Correct.
May 21, 2014

Algebra
A bag holds 20 yellow mints and 80 other green or pink mints. You choose a mint at random, eat it, and choose another. Find the number of pink mints if P(yellow then pink) = P(green then yellow). What is the least number of pink mints if P(yellow then pink) = P(green then ...
May 21, 2014

History of KKK
the history of the KKK and their activities in the postwar South a. What conditions led to the formation of this group? b. What were their tactics? c. What was the result of the activities?
May 21, 2014

Spanish
a. crowds of people -3 b. the members of the fraternity, who perform the authentic act of penitence --6 c. the float which carries La Virgen -7 d. musical compositions - 1 e. members of the fraternities that make up the procession. -4 f. a float or portable platform and all ...
May 21, 2014

Statistics
A confidence interval for a population mean has a margin of error of 3.1. a)Determine the length of the confidence interval. b)If the sample mean is 56.7, obtain the confidence interval.
May 21, 2014

fifth grade math
susan picked a watermelon that weighed 8/15 lb. larry a watermelon that weigh 1/4 as much as Susans. how muchdid larrys weigh
May 21, 2014

Movie comprehension
I missed class and did not watch " Never Cry Wolf". So .... What did the wolf do to Tyler's suitcase? How did Tyler respond to the wolf's actions and what was the meaning of his responses?
May 21, 2014

Biology - Help!!
Did u get the answers
May 20, 2014

math
Fun & Games is having a sale. There is a special price for games sold in packs. Pack A cost $ 41.70 and includes Feisty Fox, Dolphin Derby, and Rat Race. Pack B cost $ 37.95 and includes Rat race and two Feisty Fox games. Pack C cost $ 26.75 and includes Dolphin Derby and ...
May 20, 2014

Precalculus
It's asking for general form, not slope-intercept
May 20, 2014

Precalculus
My teachers answer was 5x+8y=32 Your answer is clearly wrong..
May 20, 2014

Precalculus
Find the general form of the equation for the line with the given properties Slope=-5/8 ; containing the point (0,4)
May 20, 2014

physics
If I put the tip of a 100 foot pipe in the ocean and applied a perfect vacuum to the top, how high would the water rise in the pipe?
May 20, 2014

math
-3T+8=20
May 20, 2014

Math
Hehe, thanks Ms. Sue. Your the best! :D
May 20, 2014

Math
Please help!
May 20, 2014

Math
You want to determine the average number of songs people keep on their MP3 players. You want to collect data from a random sample of at least 300. Which of these would be the most valid method of collecting data? a. Survey students coming in and out of your school cafeteria. b...
May 20, 2014

Algebra
Oops! I forgot the square root. So would the standard variation be 3.65?
May 20, 2014

Algebra
Find the mean and standard deviation of the data set. If necessary, round to the nearest hundredth. 4, 8, 5, 12, 3, 9, 5, 2 Mean is 6 and standard deviation is about 13.33?
May 20, 2014

Algebra 1
There are 67 members in the club. There are 10 freshmen. The probability that a freshman IS chosen is 10/67. So, subtracting 10 from 67, you get 57. The probability that a freshman IS NOT chosen is 57/67.
May 20, 2014

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