Sunday

February 1, 2015

February 1, 2015

Total # Posts: 4,208

**gemetry**

suppose that A=(58,3,4),B=(-2,18,24),and C=(-2,3,4) is triangle ABC a right triangle
*July 18, 2012*

**Chemistry**

What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6) in 100 g of H2O? Kf for water is 1.86oC/m
*July 17, 2012*

**Chemistry II**

A solution is made by mixing 38.0 mL of ethanol, C2H6O, and 62.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C?
*July 17, 2012*

**Chemistry II**

Quinine is a natural product extracted from the bark of the cinchona tree, which is native to South America. Quinine is used as an antimalarial agent. When 3.28 g of quinine is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 8.43 °C. ...
*July 17, 2012*

**MAth**

An ice cream cone is 3 inches wide at the widest point, and is 6 inches tall. What is the volume of the cone in cubic inches? Use Pi
*July 5, 2012*

**math**

Solve the problem by stating the equation you would use to solve and then solving it. Be sure to show all of your work. In a local election, 53,400 people voted. This was a decrease of 7% over the last election. How many people voted in the last election? Round to the nearest ...
*July 2, 2012*

**Chemistry**

How many grams of calcium phosphate are theoretically produced if we start with 10.3 moles of Ca(NO3)2 and 7.6 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2
*June 26, 2012*

**Chemistry**

Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2
*June 26, 2012*

**Chemistry**

How many grams of calcium phosphate are theoretically produced if we start with 10.3 moles of Ca(NO3)2 and 7.6 moles of Li3PO4?
*June 26, 2012*

**history**

9. Elias Howe invented which of the following?
*June 25, 2012*

**AFM (MATH)**

a) Write an equation to represent the volume of an open box constructed by cutting congruent squares from the corners of a 24" by 14" piece of cardboard. b) What is the domain of this model?
*June 24, 2012*

**English12**

Below, you will find a list of sentences. After each sentence, select true if the topic of the statement is suitable to form the basis of a single persuasive paragraph. If the topic of the statement in your textbook is unsuitable for a single persuasive paragraph, select false...
*June 21, 2012*

**reading**

i say sunrise
*June 15, 2012*

**THE AGE OF DISCOVERY TO THE AMERICAN EXPERIMENT**

Thank you
*June 14, 2012*

**Social Studies**

1. For revolutionaries like Sam Adams, the term _______ embraced a way of life, a core ideology, and an uncompromising commitment to liberty and equality. A. independency B. republicanism C. federalism D. Americanism 2. Which of the following best describes the Columbian ...
*June 14, 2012*

**economics**

Determine the sum of money that must be invested today at 9% interest compounded annually to give an investor annuity (annual income) payments of $5,000 per year for 10 years starting 5 years from now.
*June 7, 2012*

**Geomtry**

Find the length of segment CE if AE = 8 inches, EB = 10 inches, and ED = 5 inches.
*June 5, 2012*

**Stat**

The salaries at a corporation are normally distributed with an average salary of $29,000 and a standard deviation of $4,000. What is the probability that an employee will have a salary between $22,520 and $23,480? Enter your answer rounded to exactly 4 decimal places.
*June 5, 2012*

**calculus**

The salaries at a corporation are normally distributed with an average salary of $29,000 and a standard deviation of $4,000. Sixteen percent of the employees make more than Sara. What is Sara's salary? Round your answer to the nearest dollar.
*June 5, 2012*

**Calculus**

Thanks a lot for your help, Count Iblis! :)
*June 5, 2012*

**Calculus**

Evaluate the integral: 16csc(x) dx from pi/2 to pi (and determine if it is convergent or divergent). I know how to find the indefinite integral of csc(x) dx, but I do not know how to evaluate the improper integral, at the following particular step. I know I need to take the ...
*June 5, 2012*

**Reimbursement methodologies**

CMS-1450 There is no form ub-4. there is UB-04 CMS_1450 form for out patient claims UB-92 MANAGED CARE
*June 4, 2012*

**Calculus**

Thank you for your help, Bob. I will be more clear regarding exactly where I do not understand. I know I need to take the limit on the upper bound (e.g. A) as it approaches pi from the left side. After doing so, I get ln|csc(x)+cot(x)|. Approaching pi from the left side, I get...
*June 4, 2012*

**Calculus**

Evaluate the integral: 16csc(x) dx from pi/2 to pi (and determine if it is convergent or divergent). I know how to find the indefinite integral of csc(x) dx, but I do not know how to evaluate the improper integral.
*June 4, 2012*

**math**

Let A=number of animals, D=number of dogs, B=number of bunnies, and C=number of cats. Given: 1/2*A = D 1/4*A = B C = 6 C = B Solution: C=B=6 1/4*A=B=6 1/4*A=6 A=6*4=24 D=1/2*A D=1/2*24 D=12 Therefore, there are 12 dogs.
*June 4, 2012*

**math**

You need to post the options given in the question. For instance, the folloiwng are proper ways to express the teacher-student ratio: 1:20, 1/20, 0.05
*June 4, 2012*

**Probability **

Two number cubes are rolled .both cubes are Labelled to 6. The numers rolled are added . What is the probability of each outcome? A) the sum is 12. B) the sum is less then 4. C) the sum is 7. D) the sum is 2.
*May 29, 2012*

**Probability**

Two cubes are rolled .both cubes are labelled 1 to 6.the number rolled are added. What is the probability of each out come ? a) sum is 12 B)the sum is less than 4. C)the sum is 7. D)the sum is 2.
*May 29, 2012*

**chemistry**

the reaction of N2+3H2-->2NH3 is used to produce ammonia commercially. if 1.40 g of N2 are used in the reaction, how many grams of H2 will be needed?
*May 28, 2012*

**physics**

A 0.93 kg block is shot horizontally from a spring, as in the example above, and travels 0.539 m up a long a frictionless ramp before coming to rest and sliding back down. If the ramp makes an angle of 45.0° with respect to the horizontal, and the spring originally was ...
*May 28, 2012*

**Precal**

What is the standard form of this parabola: -2x^2+16x+24y-224=0 Please Help, parabolas are evil.
*May 25, 2012*

**Maths**

An irregular octagon R has vertices 6, 2), (2, 6), (−1, 5), (−5, 1), (−6, −2), (−2, −6), (1, −5) and (5, −1). Using standard notation, write down the elements of the symmetry group S(R) of R, giving a brief description of the ...
*May 24, 2012*

**Introduction to Ethics& Social Responsibility**

The outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed...
*May 24, 2012*

**algebra**

Renee belongs to a bowling club. She scores 50, 52, 55, and 59 on her first four games. She hopes to continue improving according to this pattern. Part A: What are the next four terms in Renee’s sequence? Part B: Write an recursive function rule for the sequence? Part C: ...
*May 23, 2012*

**physics**

Water is to be pumped to the top of a skyscraper, which is 1270 ft high. What gauge pressure is needed in the water line at the base of the building to raise the water to this height?
*May 21, 2012*

**8th grade math**

how do you solve x+1/10= a whole number
*May 21, 2012*

**Calculus**

I need help with these two review calculus problems for my final exam. What is the derivative of a). (5x^2+9x-7)^5 b). Lne^x^3 For a. I got 50x+45(5x^5+9x-7)^4 For b. I got 3x^2 Can you verify please?
*May 21, 2012*

**Calculus**

Thank you so so much! I finally understand what to do! :)
*May 21, 2012*

**Calculus**

I am not sure what to do here: Find the derivative (f '(x) using the limit process a). f(x)= 2x^2+5x+2 find f ' (2) b.) Find the equation of the Tangent Line at (1,5)
*May 21, 2012*

**culture**

Mutually Assured Destruction" is a policy based on which game theory strateg
*May 20, 2012*

**Calculus**

HOw do I find the domain of f(x)= x^2+3x+5?
*May 18, 2012*

**Chemistry**

Pb(NO3)2(aq) 2 x 10-3 M and Na2SO4(aq) 2 x 10-3 M Identify the ions that are present in each solution, and calculate their concentrations. If 1 L of each solution are mixed, will a precipitate be formed? Why?
*May 16, 2012*

**Chemistry**

Pb(NO3)2(aq) + NaSO4(aq) → PbSO4(s)+ 2NaNO3(aq) Identify the ions that are present in each solution, and calculate their concentrations.
*May 16, 2012*

**math**

solve equation. 2p^2-50=0 PLEASE HELP
*May 7, 2012*

**Math**

multiply: -4x^3(6x-3x^4) show your work. please help me!!
*May 2, 2012*

**MATH**

When adding or subtacting polynomials, what is very important to remember? PLEASE HELP
*May 2, 2012*

**Math**

what is 18x^5+3x^3+6x after it is divided by 3x? show your work. PLEASE HELP MEEE
*May 2, 2012*

**Math**

What is the result when (4x^2-5x+7) is added to (x^2-3x-6)? show your work. PLEASE HELP ME!!
*May 2, 2012*

**Math**

multiply: a)(2x+5)(2x-5) b) -4x^3(6x-3x^4) show your work. please help me!!
*May 2, 2012*

**Math**

what is the result when 2x^2+3xy-6 is subtracted from x^2-7xy+2? show your work. please help me!
*May 2, 2012*

**Mathematics**

ok but could you give me an example of what state in terms of h means
*May 2, 2012*

**Mathematics **

a cuboid with length 13cm width 4cm and height h State in terms of h the shaded face of the cuboid. write an expression in terms of h for the volume of the cuboid. if the volume of the cuboid is 286cm cube calculate the height h of the cuboid.
*May 2, 2012*

**trig**

I don't understand how to fnd it though Reiny :( perhaps you could help?
*April 30, 2012*

**trig**

Determine whether the vectors are parallel, perpendicular or neither. 1) v = (4,1), w = (1,-4) 2) v = (2,3), w = (4,6) 3) v = (2,3), w = (3,-3) Please and thanks!
*April 30, 2012*

**trig**

Find the component form for vector v with the given amplitude and direction angle theta. |v|=20.6, theta=102.5deg
*April 30, 2012*

**trig**

Find the dot product of u and v u= 3i+7j v= 11i-5j
*April 30, 2012*

**MATH**

What is the measure of each angle in a Googolgon
*April 30, 2012*

**Statistics**

Suppose it can be assumed that 60 percent of adults favor capital punishment. Find the probability that on a jury of twelve members: a) All will favor capital punishment. b) There will be a tie.
*April 30, 2012*

**Mathematics **

how to find the length of a triangular prism? when the volume is 1470cm cube the height is 10.5cm base 14cm
*April 30, 2012*

**algebra 2**

Sorry, that wasn't one of the choices!!!! Hopefully someone who knows their algebra can help me answer it correctly :-)
*April 27, 2012*

**algebra 2**

Graph the equation. Identify the vertices, co-vertices, and foci of the ellipse. 64x^2+16y^2=1024 This is what i have so far vertices (0,8)(0,-8) foci(0,4√3),(0,-4√3)
*April 27, 2012*

**algebra 2**

Graph the equation. Identify the vertices, foci, and asymptotes of the hyperbola. Y^2/16-x^2/36=1 I think....vertices (0,4),(0,-4) foci??? asymptotes y=+/- 2x/3
*April 27, 2012*

**algebra 2**

Write an equation of the hyperbola with vertices at (–7, 0) and (7, 0) and foci at (–9, 0) and (9, 0)
*April 27, 2012*

**algebra 2**

Write an equation of an ellipse with center at (0, 0), co-vertex at (-4 , 0), and focus at (0, 3). I think its... X^2/16+y^2/9=1
*April 27, 2012*

**algebra 2**

Write an equation of the hyperbola with foci (0, -2) and (0, 2) and vertices of (0, -1) and (0, 1).
*April 27, 2012*

**algebra 2**

Write an equation of the ellipse with center at (0, 0), vertex at (4, 0), and co-vertex at (0, 2)
*April 27, 2012*

**algebra 2**

Thank you very much!!
*April 27, 2012*

**algebra 2**

A swimming pool in the shape of an ellipse is modeled by x^2/324+y^2/196=1, where x and y are measured in feet. Find the shortest distance (in feet) across the center of the pool? i think its 28 feet....
*April 27, 2012*

**algebra 2**

Thank you :-)
*April 27, 2012*

**algebra 2**

What is the equation of an ellipse with a vertex of (0, 3) and a co-vertex of (-2 , 0)? i think its 9x^2+4y^2=36...not sure
*April 27, 2012*

**algebra 2**

Is it (0,±6)?
*April 27, 2012*

**algebra 2**

Thank you again.
*April 27, 2012*

**algebra 2**

Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0). 1) x^2/64-x^2/16=1 2)x^2/16-y^2/64=1 3)y^2/48-x^2/16=1 4)x^2/16-y^2/48=1
*April 27, 2012*

**algebra 2**

That isn't one of the choses... 1) x^2/64-x^2/16=1 2)x^2/16-y^2/64=1 3)y^2/48-x^2/16=1 4)x^2/16-y^2/48=1
*April 26, 2012*

**algebra 2**

Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0).
*April 26, 2012*

**medical transcription**

Im working on a transcription and i know this sentance is not right but i cant figure out how to spell it correctly can any one tell me what it is or how to spell it so i can look it up thx what i need help on is the last word heart regular rate and rhythm normal S1, S2 ...
*April 26, 2012*

**algebra 2**

When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the economy when the grocery store buys more merchandise from suppliers. In turn, the suppliers don’t keep all of that money as profit, either; ...
*April 24, 2012*

**chemistry**

Compare and contrast the ideas of heat and temperature. Explain how one affects the others and why they are not the same thing.
*April 23, 2012*

**Algebra**

Window World, Inc. is responsible for designing windows for the expansion of the campus chapel. The current design is shown in the figure. The metal trim used to secure the perimeter of the frame is 126 inches long. If the maximum window area is desired, what will be the ...
*April 23, 2012*

**trig**

find the math product of u and v u= (6,7) v= (-3,9)
*April 23, 2012*

**MAth**

A 13 foot ladder is resting against the wall. The bottom is initially 10 feet away from the wall and is being pushed towards the wall at a rate of 0.25 ft/sec. How fast is the top of the ladder moving up the wall 20 seconds after we start pushing? Hint: the hypotenuse (ladder...
*April 22, 2012*

**pre-calc**

tanx= -12/5 x in Q 2. find sin2x= cos2x= tan2x=
*April 21, 2012*

**Stats**

A random sample of n=500 households in a certain metropolitan area revealed that 150 have combined cable, phone and internet service. a.Calculate p-hat, the sample proportion of households having such service. b.Calculate a confidence interval for π, the proportion of all...
*April 21, 2012*

**Physics**

The ceiling of a classroom is 3.75 m above the floor. A student tosses an apple vertically upward, releasing it 0.5 m above the floor. What is the maximum initial speed that can be given to the apple if it is not to touch the ceiling?
*April 21, 2012*

**algebra 2**

When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the economy when the grocery store buys more merchandise from suppliers. In turn, the suppliers don’t keep all of that money as profit, either; ...
*April 21, 2012*

**Science**

Why are x-rays uneffected my electric and magnetic fields. Please help me to understand this. I think that x-rays are unefected because each has a different wavelength of radiation. These different wavelengths cause no effect.
*April 20, 2012*

**Mathematics **

Express 3x squared + 2x + 1 in the form a(x+p)squared + q where a,p and q are real numbers
*April 20, 2012*

**Mathematics**

Express 3x squared + 2x + 1 in the form a(x+p)squared + q where a,p and q are real numbers
*April 20, 2012*

**chemistry**

Assuming that the temperature and quantity of a gas sample remain constant, what will be the final pressure of 1.6 L sample of gas originally at 330K and 4.84 atm, when the volume is reduced to 840 mL?
*April 19, 2012*

**Mathematics**

95 mins
*April 19, 2012*

**Mathematics **

a bus travelled at at average speed of 54km/hour from lape town to cape town calculate in km the distance from lape to cape town
*April 19, 2012*

**algebra 2**

When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the economy when the grocery store buys more merchandise from suppliers. In turn, the suppliers don’t keep all of that money as profit, either; ...
*April 18, 2012*

**spanish**

¿Te gusta el nuevo portátil? No, prefiero la vieja. No, prefiero los viejos. No, prefiero el viejo.
*April 18, 2012*

**spanish**

Escribe pero, sino o sino que en el espacio. Escribe solamente la palabra que falta 1)No veo a tu primo, ____ a tu padre. 2) Esa tienda vende muy buenos productos ____ son caros. 3)No les gustan los videojuegos ____ los juegos de mesa. 4) Las pilas no son caras ___ baratas. 5...
*April 18, 2012*

**Geometry**

A right prism has bases that are squares. The area of one base is 81 square feet. The lateral area of the prism is 144 square feet. What is the altitude of the prism.
*April 18, 2012*

**Chemistry**

78 mL of a 1.60M solution is diluted to a volume of a 238mL. A 119-mL portion of that solution is diluted using 133 mL of water. What is the final concentration
*April 13, 2012*

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