Thursday

September 18, 2014

September 18, 2014

Total # Posts: 70,720

**Science**

1.How are continental glaciers different from valley glaciers? C. Continental glaciers flow in all directions as they move, while valley glaciers mice down slopes already cut by rivers 2. How does the process of plucking cause erosion D. Rocks are mixed with sediment and ...
*May 27, 2014*

**physics**

What is the maximum walking speed of an adult man whose legs are each 0.90 m long?
*May 27, 2014*

**general chemistry**

how to calculate molarity?
*May 27, 2014*

**algebra**

given the function rule f(x)=x^2-4x+3, what is the output of f(-3)
*May 27, 2014*

**Math**

These two box and whisker plots show the results of a science test. Plot 1: Minimum:65, Maximum:95, Median:82, 1st Quartile:67, 3rd Quartile:88 Plot 2: Minimum:57, Maximum:100, Median:92, 1st Quartile:78, 3rd Quartile:93 What does this information tell you about the results? A...
*May 26, 2014*

**Math**

There are 30 seniors, 15 juniors, 12 freshman, and 10 sophomores in the club. When one student is picked randomly, what is the probability that a sophomore is not chosen? 57/67?
*May 26, 2014*

**Math**

The probability of rolling a number less than 4 on a number cube is ____ 1/2?
*May 26, 2014*

**world history**

Does anyone know any songs that relate to the period of time from 600 CE to 1450 CE?
*May 26, 2014*

**Chemistry**

Dr bob for this question :Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution. The Ksp is 2.1 x 10^-13 but I can't solve for x thanks.
*May 26, 2014*

**Chemistry**

The Ksp is 2.1 times 10 ^-13 But I don't know how to solve for x the answer is 4.2 times 10^-11
*May 26, 2014*

**Chemistry**

Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution.
*May 26, 2014*

**Algebra**

I mean a group at my gym.
*May 26, 2014*

**Algebra**

So if I interviewed a group of people under 10 and interviewed all people in the group, would that meet the requirements?
*May 26, 2014*

**Algebra**

In this activity, you will design and conduct a survey. Select a topic for your survey. d. Are the people you surveyed representative of the group you want to study? What does D mean?
*May 26, 2014*

**Science 207**

3. How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature?
*May 26, 2014*

**trigonometry **

A sled travels from point A at the top of a hill to Point B at the bottom. If the distance from point A to point B is 120 m and the vertical change is 50 m, find the angle of depression to the nearest degree.
*May 26, 2014*

**Ed Tech**

Thanks!
*May 25, 2014*

**Ed Tech**

Is there anything more?
*May 25, 2014*

**Ed Tech**

How does technology impact 21st century skills?
*May 25, 2014*

**algebra**

total cost=2.30+1.2m 1.30m=2.30+1.2m .10m=2.3 m=23 miles check that
*May 25, 2014*

**Ed Tech**

What were the tube computers of 1946-1958 used for?
*May 25, 2014*

**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*

**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*

**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*

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