Monday

April 21, 2014

April 21, 2014

Total # Posts: 956

**math**

the answer is 13

**4th grade**

On the average your heart beats about 72 times per min. At this rate, about how many times will it be 30 days in a year in your lifetime if you live to be 72?

**physics**

A 60 kg skier with an initial speed of 12 m/s coasts up a 2.5 m high rise that makes a 35 degree angle with the horizontal. If the coefficient of friction between the skis and the snow is .08, find the speed of the skier when he reaches the top of the rise. How much work does ...

**3rd grade math (array)**

what is the aweser to this

**social studies**

whats the effect on climate for these listed below?: sun and location wind water mountain

**math**

1,3,6,10,15....

**9th grade**

If a 300 N action force is exerted to the right, the reaction force will be ___.

**english ")**

a sentence that use a context clue and the word serene!!

**chemistry**

6 Mols of NO_2 This is due to there being 8 mols in the theoritical yeild and using the % yeild formula. Sorry I'm not too sure how to explain how I did this.

**en**

Many students mistakenly believe that anything that appears in print must be a fact. Especially in textbooks.

**biology**

WHAT CHARGE ARE PROTONS

**physical science**

A 50 kg crate is lifted to a height of 10 meters.How much potential energy does the crate have begin lifted?

**Statistics**

Using a Z-value of 2.575, the answer is 238.7; or 240 if the answer is in multiple choice form.

** physics (last problem)help**

above answer is not correct

**M**

My hw says explain why the plot u plotted is correct in between 2 n 3 there are 3 lines and you want to get 2 n 1/6 so I plotted the line between 2 and the line after that can u explain how I'm right ???

**hrm 240**

so like some disadvantages for internal would be if you don't have a job at bank you can't get job. and advanges would be if you are a employee you have a good chance for the job.

**hrm 240**

My assignment is write and post a minimum of 350 words checkpoint naming one internal and three externak ways that you could recruit for the job in your final project. What are the advantages and disavantages of each recruit method for the job? I chose bank manager for my fina...

**hrm 240**

need help it says to naming one internal and three extrnal ways that i could recruit for the job the job i chose is bank manager and what are the advantages and disadvantages to this is? what i want to know is what is internal and external ways?"

**medical**

i really feel it is d.negligence

**Math**

You have a wire that is 35 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The other piece will be bent into the shape of a circle. Let A represent the total area of the square and the circle. What is the circumference of the cir...

**Algebra**

Five-Sixths of a number is -60. What is the number?

**Pre calc**

Haha thank you so much I feel so stupid haha

**Pre calc**

Vector A has magnitude 23 units and direction, counterclockwise from east, of 5.8 degrees. What is the value of its x component to 1 decimal place? Its y component? This problem seems easy enough but I keep getting the wrong answer using the law of sines. Is there another way ...

**Algebra**

Order of opperations or PEMDAS. Parenthasis, exponents, multiply, divide, add, subtract. In that order. For this problem, an exponent is inside of parenthasis. So if you want to solve the parenthasis first, you need to solve the exponent then multiply by 5 and then subtract by...

**Physics check**

A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and...

**Physics**

How far to the nearest tenth of a meter can a runner running at 11 m/s run in the time it takes a rock to fall from rest 90 meters?

**Physics**

Im sorry I am new to physics this is my first year and I still have no idea what to do for this problem. The other two that you answered I had them correct before you answered them and was using it as a check. When I reworked them your way, I got the same answer. However on th...

**Physics**

A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?

**Physics**

A passenger in a helicopter traveling upwards at 19 m/s accidentally drops a package out the window. If it takes 14 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped? To the nearest meter what was the maximum height of t...

**chemistry**

can anyone explain to me this i dont understand it. Radicals Certain groups of different atoms will join together and act as a single unit when forming compounds. Such a group of atoms is called a radical. In the compound calcium carbonate, written CaCO3, the carbonate group C...

**Physics**

A car traveling at 10 m/s accelerates at 2.03 m/s2 for 11 seconds. To the nearest meter how far does it travel? To the nearest tenth of a m/s, what is the final velocity of the car in the previous problem?

**Physics**

A car accelerates at a constant rate from zero to 36.8 m/s in 10 seconds and then slows to 13.9 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds? What was the acceleration during the first 10 seconds in the previous problem?

**Physics**

A car accelerates at a constant rate from zero to 36.8 m/s in 10 seconds and then slows to 13.9 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds?

**algebra2**

the 2 is supposed to be below q-2

**algebra2**

q+5 + q-2 = 7/3 _____________ 3 2

**pre algebra**

idk

**algebra2**

another one i dont get. the number N im millions of hearing impaired individuals of age X can be approximated by n=0.00006x by power of two+0.0006x power of two-0.1x+1.7 approxmate to the nearest millions the number of hearing impaired individual for ages 45 and 55?

**algebra 2**

ok supposed the base of a triangle is 5 cm greater than the height the area is 52 cm what is the height and length at the base?

**algebra 2**

simplify (4f power of 7)power of four is it f power of 8?

**algebra 2**

so t=31

**algebra 2**

i cant figure out how to solve this? T with two over powe +7T-18+0 so far if figure out T+ but i dunno what

**windows xp and vista**

I am taking this same course and I can't believe you have just posted the entire test on here when it is an open book test. Did you read anything?

**chemistry**

Im sorry but i dont get it..... wouldnt the Cr in C2O72- have a 6+ charge? and Cr3+ has 3+ charge. So the left Cr would be 6*4 =24 and the right Cr is 3*4= 12 so wouldnt that be 24-12= 12? what was your logic behind reducing it to 6? im sorry but this really confuses me

**chemistry**

Im sorry but i dont get it..... wouldnt the Cr in C2O72- have a 6+ charge? and Cr3+ has 3+ charge. So the left Cr would be 6*4 =24 and the right Cr is 3*4= 12 so wouldnt that be 24-12= 12? what was your logic behind reducing it to 6? im sorry but this really confuses me

**chemistry**

for example this problem. the n is 6. how do we derive that? The galvanic cell described by the balanced chemical equation has a standard emf of 0.10 V. Calculate the maximum electrical work (kJ) the cell has done if 1987.2 g of Cr2O72-(aq) (Molar Mass - 216.00 g/mol) reacts. ...

**chemistry**

oh, im sorry. i wrote it wrong. But i also had one more question. Do the coeffiecents have any effect on our calculation of "n"?

**chemistry**

but dont you need to incorporate the charge of H+ when finding n

**chemistry**

i know how to do the problem but im not sure how the H+ effects the charge

**chemistry**

The electrochemical cell described by the cell notation has a standard emf (electromotive force) of -0.68 V. Calculate the value (kJ) for the standard free energy change of the cell. Round your answer to 3 significant figures. Pt(s) l MnO2(s) l MnO4-(aq), H+(aq) ll H+(aq), VO2...

**science!!**

:D

**school**

no one

**planning & sys requirementa**

what are the problems with the reliability and usefulness of analyzing business documents as a method for gathering information reguirements. Haow could you cope with these problems to effectively use business doumnts as a source of insights on system requirements?

**Math**

Check your formula it should be Rsquared not R2 (60x60) not 2X60

**Organic Chemistry**

I'm doing the same thing but I do not understand it fully. All of my general chemistry knowledge is gone.

**math**

2x-5+2(2x)+17=-2-5x+(4xy-7)

**Math **

Hi, can anyone help to: determine the equation of a parabola with the vetex (0,3) and passing through (3,4)? How to figure out the coeffiecient of X?

**Math **

Hi, can anyone help to: determine the equation of a parabola with the vetex (0,3) and passing through (3,4)? How to figure out the coeffiecient of X?

**mgt**

what is evaluation by objectives?

**mgt**

what is evaluation by objectives?

**mgt**

what is evaluation by objectives?

**mgt**

what is evaluation by objectives?

**mgt**

what is evaluation by objectives?

**mgt**

what is evaluation by objectives?

**mgt**

what is evauation of objectives?

**mgt**

what is evauation of objectives?

**machanics\**

can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36 m/s

**begining algebra**

A cyclist traveling at a constant speed completes 3/5 Of a trip in 1 1/2h. In how many additional hours will the cyclist complete the entire trip?

**aed204**

I am taking that class too......this is cheating can't you do your own research

**machanics**

can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36 m/s

**math (parabola)**

Hi, the question is: Write the equation of the parabola with vertex(3,-1) and x-intercepts 2 and 4. I did this: y=?(x-3)^2-1 How to find the a-value? Many thanks, and I appreciate any answer!

**General chemistry**

oh ok thank you very much, is an online class and have to teach myself so somethings get confusing

**General chemistry**

No=18.0432 but im not sure what you mean by convert to BaCl2

**General chemistry**

A researcher needs 5.00 mg of 128Ba for an experiment. If the half-life of 128Ba is 2.43 days, how many milligrams of 128BaCl2 must she order from the manufacturer if it takes 4.50 days to ship the material from the manufacturer to the university? (Assume the molar mass of 128...

**General chemistry**

thank you so much

**General chemistry**

What is the decay constant for a radioactive isotope which decreases to 34% of its original value in 2.48 hours?

**chemistry**

wee

**calculus**

bah

**physics**

i dont know

**chemistry**

aparently it is the 100% transmittance one....

**social studies**

btw i am egyptian and i went through some of that stuff when i was in egypt it is horrible

**CAM**

FYI NOT ALL MUSLIMS OR ARABS ARE LIKE THE PEOPLE WHO PARTICIPATED IN 911

**language ms.sue could u please check these thanks**

suffixes empty-empties monkey-monkeys security-securities holiday-holidays pity-pities friendly-i don't know this one strawberry-strawberries delay-delays birthday-birthdays say-says vocabulary-vocabularies conspiracy-conspiracies memory-memories candy-candys story-stories...

**Math**

I hate word problems! Can anyone just change this Following word prob to equations pls. I can do the rest! Sam invested $4500, part at 7%, the rest at 8 1/2%. After one year, the interest earned on 7% investment was $150 less than the interest earned on the 8 1/2%. How much w...

**Math**

Hi! Can someone solve these for me pls? Y=10/x y=1/2x+4 solve for x and y thanks

**Sci 275**

Just a note that "fallow" should be spelled "follow". I think the rest of the paper is fine.

**math please help i don't understand this at all**

a cylinder is formed by first tapping together the opposite edges of a rectangular piece of paper that is 11 inches long and 8.5 inches wide. if the height of the completed cylinder 8.5 what is its volume?use 3.14 for pie

**language please check my work**

-revise the sentence for a clear meaning here is the sentence Surgeons moved around the operating room, skillfully using tools wearing slippers. -the revised sentence Surgeons,wearing slippers,moved around the operating room skillfully using their tools. please if there is a m...

**language could you please check my work**

i am sorry but what does avocation mean?

**Math**

O God I hate word problems! Is there any mechanical way to memorize word problems? Can anyone just change this Following word prob to equations pls. I can do the rest! Sam invested $4500, part at 7%, the rest at 8 1/2%. After one year, the interest earned on 7% investment was ...

**meaning**

what does beam mean

**digraphs**

what is a digraph and could you please give me some examples

**Math**

Many thanks Reiny!!

**Math**

Thanks Dylan! But I wanted to know HOW to WRITE OTHER equations to have the same answers as the ones below? NOT how to solve these! 2x+5y=8 x-3y=-7

**business**

Human nature is the wrong and right ethics usually learned from families and friends.

**Math**

Hi! How to determine other linear systems that have the same solution as this system: 2x+5y=8 x-3y=-7 many thanks.

**Math**

Thanks Damon! first I eliminated z by adding equation 1+2 (1st one *2) and got same as urs x+y= 10. Then, I eliminated z by adding equation 2+3 (2nd equation*3, and 3rd equation*2) and got x-y=6. x+y= 10 x-y=6 x=16 why is this wrong?

**Math**

How is graphing a system of inequalities similar and different than that of equations?

**Math**

Help pls! I just need to set the equations only, I can do the rest. The qu. Is: The sum of three numbers is 15. The sum of the first, the second, and twice the third is 20. The sum of the first, twice the second, and three times the third is 27. This is what I did: 1st # = x 2...

**Math**

Dear Reiny! U r a life-saver! Is there a short cut to how can I set the question or change word problems into math one? It seems that this is my problem! Also, why did my way worked as well with different answers? My answers satisfied all equations as well. Many thanks.

**MATH**

X= 3/3 (divide both sides by 3 to get rid of x's co-efficient) x=1

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