Wednesday
April 23, 2014

Posts by jessica


Total # Posts: 2,569

MATHS
-12.27-0.9b=5.6(b+2.8) -12.27 - 0.9b = 4.6b + 15.68 15.68 - 12.27 = 4.6b + 0.9b 3.41 = 5.5b 3.41/5.5 = b ? = b

math
WHAT WAS THE ANSWER

math
what am i supposed to be doing?

math
solve the equation for b. -12.27-0.9b=5.6(b+2.8)

Physics
The length of a simple pendulum is 0.58 m, the pendulum bob has a mass of 285 g, and it is released at an angle of 16 degrees to the vertical. With what frequency does it oscillate?

Keyboarding and word processing
You should use your ring finger

Chem
Please tell me if these are right! What are the [H3O+] and [OH-] for a solution with the following pH values? a. 10.0 I got 1.0*10^-10 for [H3O+] and 1.0*10^-4 for [OH-] b. 5.0 I got 1.0*10^-5 for [H3O+] and 1.0*10^-9 for [OH-] c. 7.00 I got 1.0*10^-7 for [H3O+] and1.0*10^-7 f...

Please Help CHEM
Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a solution with the followin...

math
5x/5=-3x/8+1

math
Solve. 2-8x=22

Help Chemistry
Help

Help Chemistry
Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a solution with the followin...

ALGEBRA/ CONFIRMATION
I am told to graph and write in interval notation for 6 < x < 13. This is my answer (6,13) I would then graph with open ends to show that the endpoints are not included?? Please tell me if I am correct.

MATH
Max’s credit card charges him 1.575% interest per month on his average daily balance in that month. Max’s average daily balance for January is $810. What is the interest that he will pay for January

MATH
Max’s credit card charges him 1.575% interest per month on his average daily balance in that month. Max’s average daily balance for January is $810. What is the interest that he will pay for January

college physics
Rather than rotate completely horizontally, a carousel rotates at an angle of 10° from horizontal, with a constant angular velocity of 1.571 RAD/s. A box is placed 1.5 m from the axis of rotation. What’s the minimum coefficient of static friction so the box will not s...

Chem
Please tell me if these are right! 1.How many milliliters of 0.215 M NaOH solution are needed to completely neutralize 2.50 ml of 0.825 M H2SO4 solution? I got 19.2 ml 2. A 10.0-ml sample of vinegar which is an aqueous solution of acetic acid HC2G3O2 requires 16.5 ml of 0.500M...

MATH
A dog-food company makes a special kind of dog food. It consists of 30% meat powder and 70% grain. The meat powder costs 90 cents per pound. The grain costs 60 cents per pound. What is the cost of the raw materials per pound of dog food

college physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?

college physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?

MATH
SO HE STARTED OUT WITH 12?

MATH
Allen started out with x marbles. He doubled his number of marbles by buying an additional x marbles from Betty. Then he gave away one-third of all his marbles to his friend Clarence. At the end of the day, he had 16 marbles. How many marbles did he start out with

Business
How to develop documentation for Small Business professionals to manage a specific employment position that would assist professionals to choose, train, an develop successful employees toward helping the company meet its goals?

physics
what equation would i use if i wanted to find the magnitude for this problem A box of mass 32.0 kg is subject to an applied force (FA) with an elevation angle of 39.9°, and it accelerates to the right at 6.31 m/s2. The horizontal surface has a coefficient of friction μ...

English
In Life of Pi, which is the true story? To me, I think the answer can go either way... Can someone help me? :S

11th grade
No two anions may be put together in an ionic compound. Cl and Br are both negatively charged. You could put BACl2 for example.

11th grade
No two anions may be put together in an ionic compound. Cl and Br are both negatively charged. You could put BACl2 for example.

PLEASE HELP/ALGEBRA
thank you so much

PLEASE HELP/ALGEBRA
Solve by the elimination process: 0.3x - 0.2y = 4; 0.2x + 0.3y = 5/23

Math Help please!!
37. Darren worked 28 hours at $3.15 per hour. He made the following tips: $18, $16, $20, $30, and $18. What is his average hourly wage? $58 $20.40 $6.79

Algebra
Solve by the elimination process: 0.3x - 0.2y = 4; 0.2x + 0.3y = 5/23

Pre- cal Trig
2cos^2x=cosx. Can you subtract the cos from cos^2? Or what would i have to do?

algebra
A car generally depreciates 25% of its original value in the first year. A car is worth $27000 after the first year. What was its original cost?

physics
In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.900 m away from it. So that she can see the choir, a flat mirror 0.600 m wide is mounted on the south wall, straight in front of ...

Chemistry
which is an example of physical change 1.water decomposing into hydrogen and oxygen 2.potassium and bromine combining to form potassium bromide 3.solid ice melting into liquid water 4.none of the above i think its 3.

philosophy
"Happiness belongs to the self-sufficient." - Aristotle What does it mean? I don't get it...

physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 7.00 g at its outer end. What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end?

physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 7.00 g at its outer end. What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end?

physics
So how do you get the first part? "{

physics
So how do you get the first part? "{

medicine
How would you make a 1000ml soln of 5% dextrose in LRS from 100ml of 50% dextrose and 1000ml of LRS

Math
The table below gives the educational attainment of the U.S. population 25 years and older since 1960. Males- Percentage with 4 years of highschool 1960 39.5% 1970 51.9% 1980 67.3% 1990 77.7% 2000 84.2% 2004 84.8% Percentage with 4 years of college or more 1960 9.7% 1970 13.5%...

MATH
Perform the operation for each equation, if there is a solution [4k -8y ] [5k+6y 2k+1] [6z - 3x] - [2z+5x z+4] [2k + 5a] [4k+6a 3a+2]

Biology
Thank you

Biology
What are the benefits of antibiotic for human being?

chemistry
where is 1.155X10^-9 from?

chemistry
The Ka of hypochlorous acid (HClO) is 3.0 × 10-8 at 25°C. Calculate the pH of a 0.0385-M hypochlorous acid solution? i got help with this problem, but i dont get where one of the numbers came from (3.4 x 10^-5)??? i tried makeing 3.0 x 10^-8 the x but i still dont ge...

chemistry
The acid-dissociation constant, Ka, for gallic acid is 4.57 × 10-3. What is the base-dissociation constant, Kb, for gallate ion?

chemistry
The pH of a 0.55-M aqueous solution of hypobromous acid, HBrO, at 25°C is 4.48. What is the value of Ka for HBrO? how do you solve for Ka?

english 10th
what is a metaphor and hyperbole for the book the Bar Code Rebllion

algebra
how do you solve (f+g)(3) let f(x) = x2-2x and g(x)= x-5

US History
Evaluate the administrations of Presidents Hayes, Garfield, Arthur, Cleveland, and Harrison in reference to their conceptions of the office and the use of executive power.

chemistry
A 47.7-g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution.

physics
What is the energy in joules of an x-ray photon with wavelength 8.40*10e-10 m? ____J? (b) Convert the energy to electron volts. ___eV ?

Rodriguez
How many grams of CO2 will be produced when 29.0g of C3 H8 reacts with extra O2?

Calculus
a farmer has 160 ft of fence and wants a pen to adjoin to the whole side of the 130 ft barn. what should the dimensions be for maximum area?

Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stiff-legged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the gravity force, find the...

physics
what is the symbolic expression for the wavelength ë of a photon in terms of its energy E, Planck's constant h, and the speed of light c.

Math
What is the minimum value of the function f(x)= 4x^2+24x+39

Algebra
what is the value of k in the equation

Algebra
6x^2-11x-10=(3x+2)(2x+k)

English
Can you expand more on what you said? sorry..

English
Third point: He is from noble family? If I am correct, how does it make him a tragic hero? :/

English
How is Hamlet a tragic hero? I have these points 1. tragic flaws 2. he suffered throughout the play 3. ??? I need one more..I can't think of anything... someone help please.

Chemistry
If 0.117 mol of argon gas occupies 2.15 L at 725 mmHg, what is the temperature in degrees Celsius? please explain step by step. Thank you so much

math
What is the solution of the given equation? 12;8t=96?

Business
social dilema, how does I incorporate this. Would this be struggles between emplpyees. that is where i am most confussed on thank you

Business
Hiring o Performance evaluations o Discipline o Termination o Diversity o Harassment o Manager as a role model • Write a 1,050- to 1,400-word paper addressing the following points: o Describe the moral and ethical issues faced by managers dealing with your selected topic....

science
dormin, i think

Physics
As the temperature of an object becomes higher, what happens to the average wavelength of the radiation it emits?

Physics
How does the eye adjust the focus of an image on the retina?

Physics
A puddle of water (n = 1.33) is covered with a very thin layer of light oil (n = 1.20). What is the minimum thickness the oil in the region that does not reflect light with a wavelength of 550 nm?

calculus
thank you

calculus
5113

calculus
The side of a square are increasing at 2 inches per second. How fast is the diagonal increasing when the side is 3 inches?

Linear EQUATIONS
You know I had also approached it this way since I find the tables a bit challenging. May I? 1/5 x; I wanted to choose a multiple of 5 so I chose -15. -15/5 = -3. First pt (-15,-3); Then x = 10; y = 10/5 = 2 Second pt (10, 2). I then chose a third point on the graph just to ma...

Linear EQUATIONS
Hi bob. The table is what I do not understand. however when x is 0 I believe y is at 0 and if it is does that mean the y intercept is (0,0)?

Linear EQUATIONS
Need help! Graph the equation and identify the y intercept. Y = 1/5 x THANK YOU!

linear equations
Hold on. I actually need to graph this. What I did was go up vertically to 2 on the y axis, however the graph does not seem to be complete. The second answer for the horizontal line or x axis is (-2,0)?? Could that be correct??

linear equations
Great. Thank you

linear equations
Having trouble with this one. Thank you. Graph the equation and identify the y - intercept. y = 4/3x+2. (0,?) Thank you

ALGEBRA
wonderful! Thanks bob

physics
36.824

algebra
If 5T:9 = 1:2 what would t equal?

Math 111 URGENT
I wrote it like that but the message that keeps popping up is "Unexpected character '='" I'm using WeBWorK if that is any explanation to why I'm having issues

Math 111 URGENT
I have that the asymptotes are -2 and 2 however for my homework I need to write an equation to find the asymptote which I do not understand...?

Math 111 URGENT
Find the vertical asymptotes of the following function: f(x)={x-3}/{(x-3)(x^2-4)}. The equation(s) of the vertical asymptote(s) of f is/are___ & ____

3rd grade
02+03=05

3rd grade
02+03=05

3rd grade
02+03=05

3rd grade
02+03=05

Chemistry 151
Of the following transitions in the Bohr hydrogen atom, the ____ transition results in the emission of the highest-energy photon. a.n=1, n=6 b.n=6, n=1 c.n=6,n=3 d.n=3,n=6 e.n=1,n=4

algebra
No, 6(-10-2)=-72 not 70

math
No, I don't believe there's another answer. I think that 22 is the only answer.

Math
To find the hypotenuse you need to know the pythagorean theorem where a^2 + b^2 = c^2. Here a and b are the sides of the triangle that make the right angle and c is the hypotenuse. If you plug it in to that equation you should have your answer.

Physics
A uniform ladder 5.0 m long and weighing 200 N is placed against a very smooth wall so that the lower end of the ladder is 3.0 m from the wall. If the coeficient of friction between the ladder and the ground is 0.50, determine the maximum distance that a 700 N man could climb ...

Math
You have to translate this into math terms. "Is" is the same thing as = and "of" is the same thing as a multiplication symbol. You also have to remember that 98%=.98. You should then have 6=.98x and when you divide each side by .98 your answer should be abo...

math
When x=0 because if you plug 0 in for x the result is 0.

Physics
A 0.18 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The mass moves along the do...

Algebra
Hi. I have an answer for this and just need to confirm it. 2x+5(less than or equal to sign here)x + 6. I minused the x's on both sides of the greater then equal to sign; x +5 (greater then or equal to sign) = 6; x +5-5 (the sign here) 6-5 gives me x (greater than equal to ...

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