Tuesday

August 30, 2016
Total # Posts: 139

**Statistics **

Suppose a fair coin is tossed five times and let x be the number that turned up in those five times. **the mean and the standard deviation are respectively... a.) 0.5, 0.5 b.) 2.5, 0.5 c.) 2.5, 2.24 d.) 2.5, 1.12 **find P(x≥1) a.) 0.5 b.) 1.0 c.) 0.03 d.) 0.97 * i just ...
*May 30, 2016*

**Math**

A triangle has sides 8 cm and 5 cm and an angle of 90 degrees between them.Calculate the smallest angle of the triangle
*April 12, 2016*

**Chemistry / Stoichiometry**

When 1 mol of CH4 is burned, 490 kJ of energy are released as heat. CH4 + O2 -> 2H2 + CO2 If 3.2g of CH4 are burned, what is the value of the heat of the reaction? The answer worked in class was -180 kJ, but while I was redoing problems, I got the answer 98 kJ (both ...
*April 9, 2016*

**6th grade math**

1.A triangle has three vertexes. Point A is (0,0) point B is (4,10) and point C is (8,0). What are the lengths of each side? 2. What is halfway between -2 and 1?
*April 5, 2016*

**The 5th Wave**

In the 5th Wave, when Evan met Grace after he was injured, and after they fought each other, what happened to Grace? Was she killed by Evan? Another Silencer? By Commander Vosch?
*March 29, 2016*

**Authors**

Grace Is killed by Evan Walker. I htink
*March 29, 2016*

**ELA**

WHAT TYPE OF WRITING IS THIS (pick on of these:cause&effect,compare&contrast,sequence,chronological order,problem&solution,descriptive) Volcanoes are a feared and destructive force for good reason. A volcano is like a pressure valve for the inner earth, but they can also be ...
*March 14, 2016*

**Chemistry**

1) If I add 10 grams of salt into 0.1 L of water, what is the molarity of the solution? 2) Serial dilution is a common technique to make low concentration solutions. Each Serial Dilution involves taking half the solution and mixing it with a solvent, to halve the concentration...
*February 18, 2016*

**AP Chemistry**

Calculate the delta H rxn for the following reaction: CH4(g)+4Cl2(g)-->CCl4(g)+4HCl Use the following reactions and given delta H's: 1) C(s)+2H2(g)-->CH4(g) delta H= -74.6 kJ 2) C(s)+2Cl2(g)-->CCl4(g) delta H= -95.7 kJ 3) H2(g)+Cl2(g)-->2HCl(g) delta H= -184.6 ...
*December 13, 2015*

**gifted ELA**

Hi! I go to connections academy too and I was just about to ask that same question! Help anyone?
*December 5, 2015*

**algebra**

what is the coefficient in 3x to the second power + 2
*November 19, 2015*

**Health**

1.Which is NOT a type of Psychotherapy used to treat mental disorders A. insight therapy B. Group Therapy (picked this one) C. Drug therapy D. Cognitive therapy 2.Which is NOT a health professional who treats mental and emotional disorders? A. Psychiatrist B. neurologist C. ...
*November 16, 2015*

**Math**

Steve I got 0.16666666666
*November 14, 2015*

**Math**

Jessica went to the mall and used 1/6 of her money on lunch. What is the fraction of her money expressed as a decimal? A. 0.6 (line above the 6) B. 0.7 (line above the 7) C. 0.16 (line above the 6) D. 0.17 ( line above the 7
*November 14, 2015*

**Rationa Numbers**

What makes the statement true? 8^-2=? A. 64 B. 16 C. -1/64 D. 1/64 Please help
*November 13, 2015*

**Math **

Jim starts with a $2000 balance on his credit card. During the first month he charges $300, and during the second month he charges $500. The credit card has finance charges of 23% APR. The first month Jim makes a $200 payment and the second month Jim makes a $400 payment. What...
*November 5, 2015*

**PHYSICS**

Michael stands upright and allows his right arm to swing back and forth, naturally and without forcing, like a pendulum. He measures the time for 29 oscillations (complete cycles) to be 38.6 s. Assume his arm (length L) behaves as a simple pendulum, with an effective length of...
*October 19, 2015*

**Shalee ^~^**

Number one is B just took the test and got 100%
*October 7, 2015*

**Study Skills Practice **

What does it mean to survey a text? A. Read the text and take detailed notes B. Look for the main ideas C. Find the answers in your questions (picked this one) D. Answer questions out loud. Why should you consider your teacher a partner? A. Because you are not responsible for...
*October 5, 2015*

**English**

okay can u help me on this one Which answer choice contains the past participle of the verb talk? (1 point) talk talking had talked (picked this one) was talking
*September 28, 2015*

**English**

Is the 2 question A?
*September 28, 2015*

**English**

Okay would Question 1. Be past, Would Question 2. Be B, And will Question 3, be The child said she liked the cake immensely?
*September 28, 2015*

**English**

What is the principal part of the italicized verb in this sentence from “The StoryTeller”? The aunt suppressed a gasp of admiration. present present participle past past participle 2. Which sentence uses the same principal part as the previous question? (1 point) The...
*September 28, 2015*

**English**

Thank you Ms.Sue
*September 28, 2015*

**English**

Okay is it A Ms.Sue??
*September 28, 2015*

**English **

What does the aunt in "The StoryTeller" find improper about the bachelor's story? A. It makes fun of Bertha's goodness. B.It has too many fantasy elements. C.It unrealistically suggests that virtue is always rewarded. D. The bachelor tells it without ...
*September 28, 2015*

**Math**

-7 + h = 12 What is the solution?
*September 8, 2015*

**Commonwealth connections academy **

Question 1. Which of the following statements describes the aim of the person who threw the dart shown in the picture. A. The person's aim was both precise and accurate B. The person's aim was precise, but it was not accurate C. The person's aim was accurate, but ...
*September 8, 2015*

**Check My History PLZZ**

#2 is property tax
*May 24, 2015*

**math**

.5 into 5280. divided with simple strategie and got 280. am i right . will you help me?
*April 23, 2015*

**angles**

you are a hexagon.six sides? six -hex. remember that.
*April 23, 2015*

**English**

all it depends on is if you have to put more criticism. there is a lot more criticism in the world that you can use. wrong:none so far. all you have to think about to finish this is what someone moght say to you to totally offend you.
*April 23, 2015*

**Not a subject for course-off topic question**

No, only if facebook doesnt worj
*February 1, 2015*

**5th grade math **

how do i round and divide whith decimals?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
*December 4, 2014*

**English**

you need to speak and write in complete sentences.also, check your dialogue.
*December 4, 2014*

**5th grade math **

how do i simplify
*December 4, 2014*

**5th grade math**

there is a gameboard and the arrow has landed on seven.what is the probability of spinning a number larger than 6 on the spinner?
*December 4, 2014*

**English 10th grade**

the answer is a because the ellipsis is to prepare the reader for a change in topic.
*December 3, 2014*

**5th grade math**

there are ten of them
*September 30, 2014*

**Statistics**

In a random sample of 50 undergraduate students at a college, it was found that 44 students regularly access social networking websites from their college library. What is the margin of error for the true proportion of all undergraduates who access social networking sites from...
*May 19, 2014*

**math**

the surface of the top layer of a circular sand pit is about 160 square feet. estimate the radius of the sand pit, to the nearest foot
*May 6, 2014*

**Geography**

Identify three perceptual factors that affect Egypt regionalization
*April 8, 2014*

**calc**

Find the area of the indicated region. Enclosed by y = −x and y = x4
*December 15, 2013*

**business calc**

evaluate the integral from 4 to 3. x/2x^2-6dx
*December 15, 2013*

**Science**

It means that shells of deceased animals and grains and weathered rocks came from the inland with the wind, rain, etc
*December 4, 2013*

**Science**

A sandy beach is essentially where pulverized, weathered rock along with some fragments of shelled creatures and other biota have collected, tossed up by the waves and as sediment from inland areas.
*December 4, 2013*

**Chemistry**

SHOW WORK A 44g sample of CO2 has a volume of 22.4 L at STP. The sample is heated to 71 degrees Celsius and compressed to a volume of 18.0 L. What is the resulting pressure?
*December 4, 2013*

**Chemistry**

SHOW WORK A cylinder contains 98g of air at 295K. The pressure in the cylinder is 174psi. If 32g of air are allowed to escape and the cylinder is heated to 335K, what is the new pressure?
*December 4, 2013*

**Chemistry**

SHOW WORK A cylinder contains 36.5g of argon gas at a pressure of 8.20atm. The valve is opened and gas is allowed to escape until the pressure is reduced to 4.75atm at constant temperature. How many grams of argon escaped?
*December 4, 2013*

**Chemistry**

SHOW WORK A cylinder contains 22g of air. If 77g of air are pumped into the cylinder at constant temperature, how does the pressure in the cylinder change?
*December 4, 2013*

**Chemistry**

SHOW WORK A cylinder containing 48g of nitrogen gas at room temperature is placed on a scale. The valve is opened and 12g of gas are allowed to escape. Assuming that the temperature of the cylinder remains constant, how does the pressure change?
*December 4, 2013*

**chemistry**

SHOW WORK How many moles of helium occupy 26.4 L at a pressure of 103.0 kPa, and 10 degrees Celsius? A.) 0.03 mole B.) 0.86 mole C.) 1.16 mole D.) 32.72 mole
*December 4, 2013*

**Physics**

A freestyle skier hits the take off ramp with an initial velocity of 17.5 m/s with a purely vertical take off (90 degrees). What is the peak height that the skier will reach? Can you fully explain to me how to get this answer? I did the formula d=Vi*deltT+(1/2)(a)(t^2). To get...
*February 27, 2013*

**Algebra**

-x+5y=13 x-y=15 Solve by using process of elimination.
*January 17, 2013*

**math**

8n^2+14n-15=0
*January 16, 2013*

**math**

3 written ratios for 4 apples for $1
*January 3, 2013*

**Choir**

Thank you, this will help me during the concert!
*November 5, 2012*

**Choir**

How high should my note be in the highest point of the song O Come all ye faithful.
*November 5, 2012*

**reading**

What type of figurative language is this sentence:He was as clumsy as a bull in a China shop.
*November 5, 2012*

**Algebra 1 **

What is an equivalent fraction to: 1/4(20z+10)+1/2z-2 1/4. I don't understand this.
*October 30, 2012*

**Algebra 1**

What is an equivalent fraction to: 0.5(12z-7)-3.5z+3.5 I NEED HELP!!!
*October 30, 2012*

**elementary**

That chocolate is from me. Why can't YOU do this?
*October 30, 2012*

**Chemistry**

Calculate the concentration of an acetic acid solution prepared by mixing 13.5mL of 10.0M acetic acid with 250.0mL of .15M NaCl solution.
*October 10, 2012*

**geography**

hongkong
*August 21, 2012*

**Physics**

The diagram for this problem is a pulley. On the left end Box 1 is sitting on a table and Box 2 is attached sitting on top of Box 1 and is attached to the string for the pulley. The right side has the string attached to Box 3 which is lifted off the table. A massless rope ...
*June 21, 2012*

**Physics**

Yea I got it! Thanks a lot!
*June 20, 2012*

**Physics**

Oh sorry I completely forgot to add that part in. It's a right triangle and mass A is on the incline (hypotenuse) portion and is attached to a pulley and on the other end is mass B hanging down the side that would be the height of the triangle (opposite of the angle). Is ...
*June 20, 2012*

**Physics**

If someone could help me get started or help me with the first few steps I could probably finish. With Mass A = .500 kg And Mass B = .125 kg Find the angle so that the system will be in equilibrium.
*June 20, 2012*

**7th grade history**

who was the frist dutch priest in eurpoe
*April 11, 2012*

**CALCULUS**

Find d/dx of the antiderivative from x^4 to 5 of the (9-t^2)^1/2
*March 8, 2012*

**calculus**

A trough is 10 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x10 from x=−1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the ...
*February 27, 2012*

**Calculus**

A trough is 5 meters long, 1 meters wide, and 4 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 4 meters, and base, on top, of length 1 meters). The trough is full of water (density 1000 kg/m3 ). Find ...
*February 27, 2012*

**Calculus**

A trough is 5 meters long, 1 meters wide, and 4 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 4 meters, and base, on top, of length 1 meters). The trough is full of water (density 1000 kg/m3 ). Find ...
*February 27, 2012*

**hss**

need help to do a project on louise pasture
*January 30, 2012*

**Math**

I need a formula to solve the question.... If anyone has a clue I would love it
*November 27, 2011*

**Math**

Karen has an 86% average after 4 grades, what grade does she need to get in order to bringer average up to an 88%?
*November 27, 2011*

**Physics**

A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials’ boat pulls up next to the spy’s boat, both boats reach the edge of a 4.6 m waterfall. The spy’s speed is 15 m/s and the officials’ speed is ...
*November 21, 2011*

**calculus**

find the equation of the tangent line at f(x)=tanx - 2 at point (pie/8,3)
*October 18, 2011*

**chemistry**

A cube of gold has a side length .050m. The mass of the cube is 2.40kg. What is the density of gold in g/cm cubed?
*October 13, 2011*

**english**

you have to find your questions by using the simpilogical text and its features
*October 4, 2011*

**math**

You are 64 inches tall and your shadow is 72 inches long. A tree casts a shadow of 144 inches. How tall is the tree?
*June 29, 2011*

**maths**

1 1/6!!
*June 29, 2011*

**pre-calc**

what are the asymtopes of 2x/x-3
*May 22, 2011*

**trig identities**

is that the answer?
*April 26, 2011*

**trig identities**

cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.
*April 26, 2011*

**pre calc**

cos2x=cosx in interval of [0,2pie]
*April 26, 2011*

**Algebra **

Ok thanks!
*April 5, 2011*

**Algebra **

Is this simplified? 6a2 + 4a2b - 4ab - 3b *The 2's are exponents
*April 5, 2011*

**english 3**

Which one of the following statements is not true about the president Ratcliffe portrayed in The General History?
*February 9, 2011*

**social studies**

i need a list og lanformations in weirton wv or near weirton wv
*January 23, 2011*

**Algebra**

Each ordered pair is a solution of a direct variation. Write the equation of direct variation. (2,10) (8,2) (7,21) (2,-16) Please Help!
*December 2, 2010*

**Math**

1st- 110 2nd- 55 3rd- 110 4th- 55 5th- 60 Pretty sure that's correct
*December 2, 2010*

**Math Help please!!**

5-26= -21 Negative fractions and whole numbers. If the second number is greater than the first, subtract the first from the second and add a negative sign.
*December 2, 2010*

**Math**

Well then . . . You are subtracting fractions from whole numbers. You take your whole number and put it over 1. Then Find a commom denomenator between the two bottom numbers. For example, 5-2/6. 5/1-2/6. The common denomenator is 6. So inorder to get from 1 to 6, you have to ...
*December 2, 2010*

**Math**

5-26= -21 Negative fractions and whole numbers. If the second number is greater than the first, subtract the first from the second and add a negative sign.
*December 2, 2010*

**Chemistry**

They already have their maximum number of valence electrons in the outer shells, so they are stable without having to react to gaining or losing electrons
*November 17, 2010*

**Chemistry**

Why are the alkali and alkaline earth metals more reactive than other elements on the periodic table?
*November 17, 2010*

**pre calculus**

f(x)= a+tan(bx) fina a and b f(0)= 5 f(pi/8)=1/sq root of 3 +5
*November 14, 2010*

**Science (Chemisty)**

Scientists in 1962 became very excited when they were able to create xenon tetrafluoride. Why was this an unusual feat? Why was fluorine a good choice to try to react with xenon?
*October 25, 2010*

**Science (Chemisty)**

The melting point of sodium is 97.8`C. Would you expect the melting point of iodine to be higher or lower?
*October 25, 2010*