Friday

April 18, 2014

April 18, 2014

Total # Posts: 696

**Math**

Can someone explain the sine rule please?

**Math**

How do I solve a problem like this: p^3m^2/7 + p^2m^3/21 - p^4m/14 Can you please help?

**Math**

Will someone help me with factoring?

**Computers**

I have trouble writing pseudo codes, while and for loops. Please help.

**computers**

I have trouble with problem solving. Can you help me please?

**chemistry**

Yes I have trouble with balancing equations(in general).

**chemistry**

NaOH(aq)+H3PO4(aq)¨Na3PO4(pq)+H2O(l) Please help.

**chemistry**

I don;t understand this question. NaOH(aq)+H3PO4(aq)¨Na3PO4(pq)+H2O(l)

**Math**

I don't fully understand factorization in algebra. I've got a problem: 9x-27x^3. Can you please help me?

**MATH**

i would say 44 4+4 is eight. If you put 44 into groups of 7 then there would be 6 in each group. and 6*7 is 42 which means there would be 2 left over

**math**

Find all real solutions to the following equation: (x^2 -7x +x)^(x^2 - 2x - 35)

**PHYSICS**

You are driving a car down a straight road at a constant 48 miles per hour. Consider the following forces: I) air drag pushing back on the car; II) gravity pulling down on the car; III) the ground pushing up on the car; IV) friction pushing the wheels (and the car) forward; an...

**Government**

Can the president veto the choice of congress's salary?

**Math**

nice explanation, i understand

**Math**

consider the following linear equataion: 4x+11y=2011 How many solutions are there such that x and y are positive integer? (note the date 4/11/2011)

**Finance**

How much will Pauline pay in interest if she takes out a simple interest loan with a principal of $3,900 at 7.2% for three years?

**physics**

A mass of 12.7 kg is hanging by a steel wire 1.02 m long and 1.12 mm in diameter. If the mass is pulled down slightly and released, what will be the frequency of the resulting oscillations? Young's modulus for steel is 2.0 1011 N/m2.

**Math.**

A bowl contains 8 marbles: 3 red, 2 blue, 1 white, and 2 green. If 3 marbles are randomly selected without replacement, what is the probability that no green marble is selected? I don't know how to do probability.

**math/science**

describe the symmetries of a water molecule.

**math**

let x and y be real numbers. find the area enclosed by the graph of the following equation: abs(2x)+abs(2y)=1

**help(math)**

Signs in a department store read, "75% off original prices when you take an extra extra 50% off already reduced prices." By what percent were original prices reduced before today's sale?

**Math**

lisa checks the stats for her favorite puzzle game on her Ipod. she sees that she has won exactly 72% of the 2400 puzzles that she has played. what is the minimum numbers of puzzles that lisa must win before she has won at least 73% of the total number of puzzels played. i tri...

**chemistry**

Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3?

**math**

Katie is on the 15th floor of a building. She throws a ball straight down from the window, which is 220 feet above the ground. How fast must she throw the ball(in feet per second) for it to hit the ground in 3 seconds?

**Chemistry **

I have 5.0 ml of lead II NITRATE and mix it with 20.0 ml of Sodium Iodide. what is the formula of the precipitate

**calculus**

A 20 ft ladder is leaning against the side of a house. If the bottom of the ladder is moving away from the house at the rate of 2 feet per second, how fast is the top of the ladder moving down the wall when the bottom of the ladder is 12 feet from the house

**math**

Find all the two digit prime numbers neither of whose digits are prime. Someone helped me yesterday but I do not understand.

**Math**

Find the smallest possible sum of six consecutive integers such that none of the integers is prime.

**Math**

is 48 included in the numbers you listed?

**Math**

okay, thank you

**Math**

Find all the two digit prime numbers neither of whose digits are prime.

**physics : different question **

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s

**physics**

Rank these automobiles based on the magnitude of the impulse needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s

**10th geade Chem**

Does anyone know how much heat do I need to convert 95g. of ice at -25 C. to water at 30 C. the heat capacity of H2O(s) is 2.1 J/g*C.

**Chem**

How much heat do I need to convert 200g of liquid water at -25C to water at 30C?. The specific heat capacity of H2O(s) is 2.1 J g*C

**child care managment**

An apprpriate science activity for a child 6 to 12 years of age is: A. collecting leaves. B.using a compass to find specific sites. C.growing plants froom seeds. D. experimenting with magnet.

**english**

clutced her notebook in the other hand as though it were a flyswatter is this a similie?

**english**

clutced her notebook in the other hand as though it were a flyswatter

**Child Care Mangment**

For me, B and C, Im not sure,these concepts stimulating children's sense of wonder and motivate them to explore the surrounding world. Thats why I'm asking That's why I'm asking for help

**Child Care Mangment**

An apprpriate science activity for a child 6 to 12 years of age is: A. collecting leaves. B.using a compass to find specific sites. C.growing plants froom seeds. D. experimenting with magnet. Thanks

**Math**

Penelope bought 17 large packs and 5 small packs of identical pens. When she got home, her little sister opened all of the packages on the floor. If a total of 234 pens were on the floor, how man pens did a large pack contain?

**Math**

circles P and Q are externally tangent at T. Horizontal lines l and m are, respectively, tangent to circles P and Q at R and S. Show that RT must contain S.

**math**

f(2n)=n+f(2n-2) and f(2)=1. determine f(20)

**math**

Use each of the integers 1-9 exactly once in any order to write a numerical expression equal to 2011. An integer may be written as an exponent, and the operations of addition, subtraction, multiplication, and divisions as well as grouping symbols may be used.

**Math**

What is the probability that rolling four fair, six-sided dice produces an even sum?

**SPANISH**

no i meant it as rhino. the word that we use for nose.

**SPANISH**

if i said, un animal grande que es la palabra en ingles para nariz, would you know what animal I was talking about.

**Physics**

A car travels in a straight line for 5.4 h at a constant speed of 79 km/h . What is its acceleration? Answer in units of m/s2.

**physics**

Two identical small spheres of mass 2.0g are fastened to the ends of an insulating thread of length 0.60m The spheres are suspended by a hook in the ceiling from the centre of the thread. The spheres are given identical electric charges and hang in static equilibrium, with an ...

**physics**

three spheres, each with a negative charge of 4.0*10^-6 C, are fixed at the vertices of an equilateral triangle whose sides are 0.20m long. Calculate the magnitude and direction of the net force on each sphere. So far i have drawn a diagram and used the formula Fe= kq1q2/r^2 a...

**physics**

79515.55

**math**

1 time only :)

**child care**

1.B 2.D 3.D 4.C 5.C 6.C 7.A 8.A 9.C 10.A 11.B 12.A 13.B 14.C ,NOT SURE B, OR B. 15.A 16.D 17.C 18.A 19.B. 20.C.

**3rd grade math hw help!**

I AM AN EQUIDRATERAL TRIANGLE.ONE SIDE IS 3 INCHES LONG.HOW LONG ARE MY OTHER 2 SIDES

**math**

the x value is negative and the y value is positive

**math**

A boat starts at point A, moves 3 km due north, then 2 km due east, then 1 km due south, and then 4 km due east to point B. Find the distance AB.

**math**

A jar contains some red and some yellow jelly beans. If a child ate 1 red jelly bean, 1/7 of the remaining candies would be red. If instead the child ate 5 yellow jelly beans, 1/6 of the remaining candies would be red

**MATH**

two sides of a triangle measure 8 and 15. how many integer values can be assigned to the third side so that all the angles in the triangle are acute.

**math(HELP)**

A jar contains some red and some yellow jelly beans. If a child ate 1 red jelly bean, 1/7 of the remaining candies would be red. If instead the child ate 5 yellow jelly beans, 1/6 of the remaining candies would be red.

**math(HELP)**

Show that number N! can terminate in exactly 1,2,3,4,or 6 zeros but never 5 zeros?

**MATH!!!!**

Im new, and I just noticed that....Thanks

**MATH!!!!**

already*

**MATH!!!!**

yes that helps. sorry i feel dumb when I ask questions alerdady on here. =/

**MATH!!!!**

A triangle with side lengths 26, 28, and 30 is constructed so that the longest and shortest sides are tangent to a circle. the third side passes through the center of the circle. compute the radius of the circle. I DONT KNOW HOW TO DO THIS AT ALL....

**MATH**

A dartboard has the numbers 3, 6, 9, 12, 15, 19, 21, 25, 27, and 30 on it. What is the fewest number of darts that could be thrown if two darts tcannot land on the same number and if the sum of the scores must be 50?

**Algebra**

The discriminant is b^2-4ac I won't do all the work for you, but figure that number out. -If its positive, theres two solutions -If its negative there are no solutions -If its zero theres one solution.

**Organic Chem **

The result is a peptide bond.

**math**

Sally can paint 1/4 of a house per hour. John can paint 1/6 of a house per hour. Let's say the answer is t hours for the total job. Then (1/4)t + (1/6)t = 1 (1/4 + 1/6)t = 1 (6/24 + 4/24)t = 1 (10/24)t = 1 t = 24/10 hours = 2.4 hours

**Math**

In a variant of the game Nim, two players alternate taking turns in removing 1, 2, or 3, beans from a pile. The object is to remove the last bean. If the initial pile has 29 beans, should you want to go first or second to guarantee a win?

**Espanol III**

su español es perfecto!!!!!

**geomatry**

m (DOC) = 3/4m(BOA)

**calculus**

On the graph of f(x)=7sin(7pi x), points P and Q are at consecutive lowest and highest points with P occuring before Q. Find the slope of the line which passes through P and Q.

**Physics**

a 10 kg gun recoils with a speed of 0.1 meter per second as it fires a 0.001kg bullet. what is the speed of the bullet as it leaves the gun

**chemistry**

If you have 25 liters of carbon dioxide at STP, how many grams of it do you have?

**algebra**

I don't know because I'm trying to figure it out now. Can someone please help me???????

**Chemistry**

Compounds can be classified as acids or bases according to _____ different theories.

**Chemistry**

A .35M solution of a newly synthesized acid, HX, has [H+] of 4.1 x 10^-2. What is the value of Ka for this acid?

**math**

If p = 2 and q = 8, the value of p^3 + 64 squared ÷ q is _____. All i can say is huh????

**math**

The names and ages for each person in a family of five follow: Name Dick Jane Kirk Jean Scott Age 40 36 8 6 2 a. What is the mean age? b. Find the mean of the ages 5 yr from now. c. Find the mean 10 yr from now. d. Describe the relationships among the means found in (a), (b), ...

**math**

Assuming the probability is that a child is a boy and births are independent. What is the probability that if a family will have four children (no twins), they will all be boys?

**math**

Suppose that a ball is drawn at random from the box (a), its color is recorded, and then the ball is put back in the box. Draw a tree diagram for this experiment and find the probability that the two balls are of different colors.

**English**

Identify the word in bold type. This car was fixed by the woman WHOSE parents used to live in New York. demonstrative pronoun indefinite pronoun interrogative pronoun relative pronoun not a pronoun

**Physic**

If the coefficient of static friction for tires on a road is 0.25, at what maximum speed can a car round a level 47.5 m radius curve without slipping?

**physics**

Im working on this same question too and i cant figure out how you got the .5 when doing 3.6*.866/.5 ??? because i know the answer is correct, is it because the net force goes through the middle?

**math**

A box contains three white balls and two red balls. A ball is drawn at random from the box and not replaced. Then a second ball is drawn from the box. Draw a tree diagram for this experiment and find the probability that the two balls are of different colors.

**math**

If 10 is removed from the set of whole numbers, is the set closed with respect to addition? Explain why or why not.

**english**

how does it meets the promise of the opening of the Declaration's second paragraph, and how it does not.

**5th grade math**

Using the butterfly method, which fraction is less 1/4 or 1/3 - I know the answer but using the butterfly method the answer does not work out? Am I doing something improper? Thanks!

**us history**

Some help with this questions would be great....thanks everyone. I would like to say the answer is #1. As president, John Quincy Adams supported... 1.a national bank to promote a uniform currency and to control credit. 2.a strict limit on the powers of the federal government. ...

**LIT/210**

Thank you very much for the additional information I am certain that this will be useful. Thanks again!

**LIT/210**

What are some additional methods that I could use during my lit course to write about the literature I will be reading? I need four, but I only could think of two. These are the two I have so far. 1)I have thought about using a reading journal to write down my thoughts and fee...

**Math**

Opps, sorry.. I forgot to write that Maria also has a project worth 4% which she got perfect on

**Math**

There are four tests in a year. The first test is worth 26%, the second is worth 20%, the third test is worth 30%, and the fourth test is 20%. Maria received a 59% on her first test. To recieve a final mark of 65%, what is the minimum she needs to obtain on each test? Can some...

**Algebra 2**

Which one is a rule for the nth term of an arithmetic sequence with a8 = 56 and d = 5?

**Chemistry**

A current of 0.80 A was applied to an electrolytic cell containing molten CdCl2 for 2.5 hours. Calculate the mass (in grams) of cadmium metal deposited. [Enter only numbers in the blank.]

**Chemistry**

Calculate the cell emf (in volts) for the following reaction at 25°C: Ni(s) + 2 Cu2+(0.010 M) → Ni2+(0.0010 M) + 2 Cu+(1.0 M) [Enter only the number of your answer.] Answer

**Chemistry**

How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of 2.00 Amperes? [Enter only a number for your answer.]

**Chemistry**

Consider an electrochemical cell based on the following cell diagram: Pt | Pu3+(aq), Pu4+(aq) || Cl2(g), Cl−(aq) | Pt Given that the standard cell emf is 0.35 V and that the standard reduction potential of chlorine is 1.36 V, what is the standard reduction potential E&de...

**Math**

Six girls each invited a date to the Sadie Hawkins dance. Before they joined in the fun, each couple worked in a different booth. The booths were Popcorn Sales, Marriage, Hayrides, Old Time Photos, Lemonade, and Raffle Tickets. Grab your partner and go round and round with the...

**statistics in psych**

mouradian (2001) surveyed college students selected from a screening session to include tow groups a) perps b) comparisons...

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