Friday

March 27, 2015

March 27, 2015

Total # Posts: 79,406

**math/stats**

Which of the following statements are true? (A) In a two-tail test of hypothesis for a population mean the decision rule is to reject H0 if the test statistic lies outside of the action limits. (B) A statistical test of hypothesis is performed under the assumption that the ...
*March 27, 2015*

**English vocab **

if you BLANK someone's mail, then you seize it before the person receives it; however, it is illegal to take someone's mail, so the police might attempt to BLANK you and put you in jail. What are the two blanks?
*March 27, 2015*

**Math**

A wheel turns 9times per minute its diameter is1.2 at what speed must I run to stay on top
*March 26, 2015*

**Math**

If a wheel turns 9 revolutions per minute and its circumference is 3.77 what speed must a mouse run to stay on top
*March 26, 2015*

**us history**

"The military, which had protected African American rights, was removed from the South." <- That one.
*March 26, 2015*

**phy**

Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
*March 26, 2015*

**statistics**

a local content center reports that it has been experiencing a 15% rate of no shows on advanced reservation Among 150 advanced reservations find the probability that there will be fewer than 20 no shows round the standard deviation to three decimal to work the problem
*March 26, 2015*

**statistics**

a local content center reports that it has been experiencing a 15% rate of no shows on advanced reservations. Among 150 advanced reservations find the probability that there will be fewer than 20 no shows round the standard deviation to three decimal to work the problem
*March 26, 2015*

**Physics**

Nvm, found it. 765 is probably suppose to be kg, but doesn't apply anyways, since the equation is 3500 = 262*d*cos(0). Dumb question tries to trick you.
*March 26, 2015*

**Physics**

It took a force of 262. N to pull a crate weighing 765 N across the floor. The work done was 3500. J. How far was the crate moved?
*March 26, 2015*

**Physics**

An 78.9 kg person carries a 23 N package up a flight of stairs. The vertical height of the stairs is 23.8 m. How much work is done?
*March 26, 2015*

**government **

what is the connection with mcculloch v maryland and proper clause
*March 26, 2015*

**math**

What is the least common denominator for the fractions and ? A. 14 B. 18 C. 24 D. 48
*March 26, 2015*

**Calc**

A model for the food-price index (the price of a representative "basket" of foods) between 1984 and 1994 is given by the function I(t)=0.00009045t5+0.001438t4−0.06561t3+0.4598t2−.6270t+99.33 Where t is measured in years since midyear 1984, so 0≤t&#...
*March 26, 2015*

**ELAAAAAAAAAA**

Pretty sure it's either C or D. Most likely D.
*March 26, 2015*

**chemistry**

A mixture og gases has a total pressure off 28.3 atm, it is made of: 5.8 atm of hydrogen gas, 7.2 atm of nitrogen gas, 3.5 atm of oxygen gas and some amount of methane. What is the pressure of methane? what is the pressure of methane in kPa?
*March 26, 2015*

**astronomy**

The distance from Earth of the red supergiant Betelgeuse is approximately 643 light-years. If it were to explode as a supernova, it would be one of the brightest stars in the sky. Right now, the brightest star other than the Sun is Sirius, with a luminosity of 26LSun and a ...
*March 26, 2015*

**Math**

Samantha has 2 meters of ribbon for wrapping packages She uses 15 centimeters of ribbon on first package how much ribbon is left
*March 26, 2015*

**physics**

Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 5.28 m. The stones are thrown with the same speed of 9.33 m/s. Find the location (above the base of the ...
*March 25, 2015*

**math**

A number cube with the numbers 1 through 6 is rolled. find the given probability P(number < 2) (1 point) 1/6 2/6 *** 4/6 3/6 2. P(number ≥ 3) (1 point) 4/6 1/6 2/6 5/6 I think it's A .. I'm not quiet sure. please help 3. P(complement of 4) (1 point) 1/6 5/6 2/...
*March 25, 2015*

**chemistry**

An equilibrium mixture of N2, H2, and NH3 at 700 K contains 0.031 M N2 and 0.52 M H2. At this temperature, Kc for the reaction is 0.29. What is the concentration of NH3? N2(g) + 3H2(g) (equilibrium arrow) 2NH3(g)
*March 25, 2015*

**aljebra**

A private plane leaves an airport and flies due east at 192 miles per hour. Two hours later, a jet leaves the same airport and flies due east at 960 miles per hour. How long will the private plane fly until it is passed by the jet?
*March 25, 2015*

**French**

I would like to double check my progress so far on my assignment to make sure I'm on the right track. 1. Complétez les phrases suivantes: A. Nous doutons que vous... Answer: Nous doutons que vous dites la vérité. B. Je suis heureuse que nous... Answer...
*March 25, 2015*

**algebra**

reduce rational expression x-5/x-9
*March 25, 2015*

**math**

Hmmm. set R=C and solve for x. Is there something you dont understand about that?
*March 25, 2015*

**math**

suppose that x liters of 36% acid solution are mixed with y liters of a 50% solution to obtain 100 L of a 37% solution. One equation is a system for solving this problem is x+y=100. which of the following is the other solution?
*March 25, 2015*

**Math**

Suck a dick
*March 25, 2015*

**Math**

Sorry that was my brother
*March 25, 2015*

**Math**

Suck a dick
*March 25, 2015*

**Physics**

In the figure below, a block of mass m = 14 kg is released from rest on a frictionless incline angled of angle θ = 30°. Below the block is a spring that can be compressed 2.0 cm by a force of 270 N. The block momentarily stops when it compresses the spring by 4.6 cm. ...
*March 25, 2015*

**Calc**

A manufacture has been selling 1300 television sets a week at $420 each. A market survey indicates that for each $16 rebate offered to a buyer, the number of sets sold will increase by 160 per week. If the weekly cost function is 91000+140x, what value of the rebate maximizes ...
*March 25, 2015*

**Accounting**

3) Green Corporation is a calendar-year taxpayer. All of the stock is owned by Evan. His basis for the stock is $35,000. On March 1 (of a nonleap year), Green Corporation distributes $120,000 to Evan. Determine the tax consequences of the cash distribution to Evan in each of ...
*March 25, 2015*

**math**

Thanks~!
*March 25, 2015*

**math**

A survey about the student government program at a school finds the following results. 190 students like the program 135 students think the program is unnecessary 220 students plan on running for student government next year. If a circle graph were made from the data, what is ...
*March 25, 2015*

**Chemistry**

It depends on the reaction
*March 25, 2015*

**government**

no i do not
*March 25, 2015*

**government **

Why have we as country not completely fulfilled the complete promise of Gideon V Wainwright? What do you think is the impact of not meeting this obligation?
*March 25, 2015*

**math!! HELP PLEASE**

Tell me what the venn diagram gives you, then I can help you understand :)
*March 25, 2015*

**math!! HELP PLEASE**

How though?
*March 25, 2015*

**math!! HELP PLEASE**

Ann it is most definitely 17, please trust me ;)
*March 25, 2015*

**calculus**

set f' to zero, solve for x. That is either a max or min location for f(x). example 0= x^2+1-2x^2=0(x^2+1)^2 0=-x^2+1 x=+-1 now check a point in between. at x=0 f'(x)=1/1= positive, so from -1 to 1, x is increasing, Now try x=-inf f'(x)=(-x^2+1)/(x^2+1)^2) divide ...
*March 25, 2015*

**math**

?? I'm a little confused with what you said.. the question shows how many students like the program, think the program is unnecessary, and plan on running for student government.. But the question is asking "what is the measure of the central angle for the group that ...
*March 25, 2015*

**math**

A survey about the student government program at a school finds the following results. 190 students like the program 135 students think the program is unnecessary 220 students plan on running for student government next year. If a circle graph were made from the data, what is ...
*March 25, 2015*

**Math**

Well there are 100 stamps
*March 25, 2015*

**Math**

How many more of corols stamps are from Norway then from France? * France= 24% England= 22% Italy= 25% Norway= 29%* A. 5 stamps*** B. 24 stamps C. 29 stamps D. 53 stamps please check
*March 25, 2015*

**History Help Please**

Thanks so much :D
*March 25, 2015*

**History Help Please**

1. Which of the following was an effect of the assembly line? A) it made workers want to return farms B) it made clothing more expensive to produce C) it increased demands for worker compensation D) it drove down the cost of clothing production *** 2. Who introduced the idea ...
*March 25, 2015*

**MATH**

Thanks, that helped.
*March 25, 2015*

**MATH**

You earn $10.00/hour and work 40 hours/week. You invest $4,000.00 at an interest rate of 5% APR for a year. How much interest did that savings earn in a year in terms of hours of work? 100 hours 20 hours 40 hours 400 hours Explain?
*March 25, 2015*

**history**

Hi Emma! I think I can help you with these, just please, tell me if I was wrong. This is super appreciated, especially for #3. 1. D 2. A 3. A or D 4. C 5. B 6. A I will continue to research to see if I find anything else. ;) Please, I beg you to tell me if I was wrong, and ...
*March 25, 2015*

**reading**

Each sentence should have 3 commas in it! "I never want to go skydiving rock climbing or bungee jumping" I replied to Susan " I get scared too easily." Katie would never throw her papers on the floor forget to push in her chair or come to class without a ...
*March 25, 2015*

**Quote Meaning**

What does the quote "Beauty itself is but the sensible image of the infinite" mean?
*March 25, 2015*

**Chemistry**

Refer to the table given for the ionic radii in your lab manual and approximate the attractive portion of the lattice energy for 1 mole of the following salts. (Consider only one bond if more than one bond exists.) a) PbS2 b) Ca3P2 c)Ca3N2
*March 24, 2015*

**Chemistry **

A voltaic cell operates with 0.40 M Zn 2+ at the solid zinc anode and 1.45 M Zn2+ at the solid zinc cathode at 25 C. Is the reaction thermodynamically favored?
*March 24, 2015*

**chemistry**

Refer to the table given for the ionic radii in your lab manual and approximate the attractive portion of the lattice energy for 1 mole of the following salts. (Consider only one bond if more than one bond exists.) (a) SrO
*March 24, 2015*

**Science**

I posted an answer below
*March 24, 2015*

**us history**

C makes the most sense.
*March 24, 2015*

**math**

please solve x+y = 1 and y-x=1 by graphing
*March 24, 2015*

**Business**

How can I create a new restaurant that follows a blue ocean strategy? I am trying to find a way to attract a target market that would not usually be a target market or make the restaurant sell something or have a unique running style that makes it different and categorized in ...
*March 24, 2015*

**math**

which fraction is greatest 5/6 7/9 2/3 or 9/12
*March 24, 2015*

**chemistry**

One gram of pbcl2 is dissolved in 1.0 l of hot water. When the solution is cooled to 25degrees Celsius, will some of the pbcl2 crystallize out? If so, how much? I just don't know where to start/ where to go with this problem Any help is appreciated!!
*March 24, 2015*

**English **

What does scroll products mean?
*March 24, 2015*

**GEOMETRY**

What is the area of a triangle? 7 ft by 3 ft with 55 degrees angle Please confirm my answer or tell me what I did wrong... • 6.0 ft² • 8.6 ft² • 15.0 ft² • 17.2 ft² my answer
*March 24, 2015*

**Physics**

A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 degrees with the horizontal. A force of 50.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 0.00 degrees to the incline. If the incline has a coefficient of ...
*March 24, 2015*

**Englisg**

A disadvantage of using a sentence outline instead of a topic outline is that a sentence outline is often A. not descriptive. B. underdeveloped. C. time-consuming to develop. D. overreliant on big ideas.
*March 24, 2015*

**L.A**

In the diary of anne frank act 2 why wont Mr. Frank answer the telephone A. he doesn't speak dutch very well. B. he is afraid that the caller will give him bad news. C. he prefers to speak to people face to face D. he doesn't want anyone to know that the building is ...
*March 24, 2015*

**math**

Why would it be 3:1 I would think it's 3:4
*March 24, 2015*

**Chemistry **

The standard heat of combustion of eicosane, C20H42 (s), a typical component of candle wax, is -1.332 x 104 kJ/mol (consider this number to be exact in your calculations), when it burns in pure oxygen, and the products are cooled to 25°C. The only products are CO2 (g) and ...
*March 23, 2015*

**finance**

investment requires an initial oulay of 105,000 and will generate cash inflow of 20000 for 11 years. What is the NPV using discount rate of 8%
*March 23, 2015*

**Geometry 2**

What is the area of the regular pentagon below? The five sides are 20 Ft each
*March 23, 2015*

**Math**

after pulling into a parking spot, ms. Felix backed her car up 2 ft. write an expression with absolute value to show the distance she traveled after pulling into the parking spot
*March 23, 2015*

**Science**

he current atomic model would be revised if A. better microscopes were being used to study its structure. B.better microscopes are invented in the future. C. new information about an atom's structure is discovered. D. a new element is discovered in the future I thiink it is C
*March 23, 2015*

**Math**

Cafeteria Lunch Buffet A cafeteria lunch buffet has the salads shown. 6 chicken salads 10 egg salads 8 tuna salads p pasta salads The cafeteria workers plan to make twice as many fruit salads as tuna salads and pasta salads combined. Part A Using p to represent the number of ...
*March 23, 2015*

**Math**

Cafeteria Lunch Buffet A cafeteria lunch buffet has the salads shown. 6 chicken salads 10 egg salads 8 tuna salads p pasta salads The cafeteria workers plan to make twice as many fruit salads as tuna salads and pasta salads combined. Part A Using p to represent the number of ...
*March 23, 2015*

**Geometry B**

A kite has diagonals 5.3 ft and 6 ft. What is the area of the kite? • 5.65 ft² • 15.9 ft² • 31.8 ft² My answer??? • 22.6 ft²
*March 23, 2015*

**Algebra**

An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
*March 23, 2015*

**algebra 2 **

1) 4 quinta sqrt(3x+1)-8=0 2) cube root(5m+6)+15=2
*March 23, 2015*

**Biomechanics**

jane is a 45 kg cyclist. If her bike weighs 100 N and she landed with her bike on the floor at a vertical reaction force of 890 N, what was her vertical acceleration during landing?
*March 23, 2015*

**geometry**

Harold has a photograph that is 8 in. Test Image 10 in. that he wants to print at a reduced size to fit into a frame that is 6 in. tall. What will be the dimensions of the new photograph?
*March 23, 2015*

**SS**

Thanks! I'll look into the physical geography one.
*March 23, 2015*

**SS**

Sources of revenue and language.
*March 23, 2015*

**SS**

What is a difference between East, North, and West Africa? The difference can be anything (government, culture, religion, etc.). I have two down and need one more.
*March 23, 2015*

**Math**

Thanks
*March 23, 2015*

**Math**

Divide the polynomial. (16x^5y^4 + 6x^3y - 2x^2y - 24x^2y^4) by -2x^2y
*March 23, 2015*

**english**

English is the language opportunity why bother to teach indigeneous language?
*March 23, 2015*

**Trig**

An isosceles triangle has legs 4 feet long. If the vertex angle measures 30 degrees, find the length of the base.
*March 23, 2015*

**physics**

A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 degrees with the horizontal. A force of 50.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 0.00 degrees to the incline. If the incline has a coefficient of ...
*March 23, 2015*

**Math**

f a contractor pays an average wage of $20.00 per hour and wants to make a 15% mark-up on the cost of labour, what will the contractor charge as an average labour cost on contracts?
*March 23, 2015*

**math**

If m=n,then m−n = n−m = 0. Give a counterexample to show that the conditional is false
*March 22, 2015*

**analytical tools**

The survival rate during a risky operation for patients with no other hope of survival is 74%. What is the probability that exactly four of the next five patients survive this operation? (Give your answer correct to three decimal places.)
*March 22, 2015*

**Chemistry help**

Why it is important for there to be no further bubbling before the final mass of the reaction beaker is obtained?
*March 22, 2015*

**Chemistry help**

Why is it important for the reaction beaker to be completely dry before weighing?
*March 22, 2015*

**Probability and Statistcis**

Students from a statistics class were asked to record their height in inches. The heights ( as recorded) were: 65, 72, 68, 64, 60, 55, 73, 71, 52, 63, 61, 74, 69, 67, 74, 50, 4, 75, 67, 62, 66, 80, 64, 65 Find five number summary.
*March 22, 2015*

**Urgent geometry help**

In the bottom left hand corner. The sides are blank. I'm just confuses on how to find the sides & finding the perimeter & area
*March 22, 2015*

**Urgent geometry help**

On a isosceles triangle, how would you find the area and perimeter when given the bases: 12 and 32 and a 45 degree angle?
*March 22, 2015*

**Chemistry**

A sodium chloride solution has a density of 1.22 g/mL. How many moles of NaCl are dissolved in 10.0 mL of the solution? The density of water is 1.00 g/mL. My solution: ? mol NaCl = 10 mL*1.22 g/1mL*1mL/58.5g The correct answer is 3.76E-2 mol. Please help!
*March 22, 2015*

**Math**

Please help
*March 22, 2015*

**Math**

I had a table of values. X / Y -3/ 2.5 -2/ 5 -1/ 6.5 0 / 7 It asks without graphing. Does it open upward or downward. I got that in the quadratic equation. a= -0.5 And if a is smaller than 0. It opens downward However. The text book says it opens upward. So I'm confused
*March 22, 2015*

**s.s**

The answer is B.
*March 22, 2015*

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