Saturday
December 3, 2016

Total # Posts: 62

Math
Use an example to describe the multiplicative relationship between two equivalent ratios
October 26, 2016

Calculus
Hi it's me again I need help with this too and I promise to never use this site again! I feel so ashamed for asking :( Use the Fundamental Theorem to evaluate the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx.The answer has to have the antiderivative too...
March 11, 2016

Calculus
Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval and please explain, using a graph of f(x), what the Riemann sum represents. My cousin needs help with her ...
March 11, 2016

Math
A 3-pound pork loin can be cut into 10 pork chops of equal weight. How many ounces is each pork chop. Is my math correct? 3lb=48oz so 48/10=4.8 so is each pork chop, 4.8 os or do i have to divide 8 by 10?
September 22, 2015

Algebra
A nurse requires a 40% alcohol solution. The nurse has 20% and 70% alcohol solutions on hand. How many liters of each should the nurse use to make 25 liters of the 40% solution?
September 21, 2015

Exponential decay
Show that if a radioactive substance has a half life of T, then the corresponding exponential decay function can be written as y=y0e^kt
September 4, 2014

Pre alegabra
There are 14 nickels, 10 dimes, 6 quarters, and 22 pennies, what's the probability I will pick a dime from the jar?
June 3, 2014

Growth potential and opportunity for a small cleaning service business
February 20, 2014

Math
I need assistance with statistics and probability. Can you some how assist me with that.?
January 3, 2014

Science
While in Europe, if you drive 109km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1euro=1.26dollars .
August 28, 2013

College Algebra
3x^4=648x someone help please im so confused. i am trying to find the solution set?
February 1, 2013

Arrays and an expanded algorithm
use the grid to draw a rectangle. Then complete the calculation. 30 x19
November 7, 2012

math
8267- 2761
September 18, 2012

Pre-Cal
Find the distance from point (-1, 3) to the line 5x- 4y= 10.
March 21, 2012

Algebra
Slope = -1.5
March 21, 2012

Equation from Three Points*HELP*
Write the standard equation for the circle that passes through the points: (0, 0) (6, 0) (0, - 8) You must include the appropriate sign (+ or -) in your answer. Do not use spaces in your answer. x 2 + y 2 x y = 0 HELP PLEASE I NEED STEP BY STEP EXPLANATION!! I KNOW THAT THE ...
March 21, 2012

It probably would be easy, but I don't have a teacher teaching me this. I do all my school work online and I just need this class to finish and graduate.
March 20, 2012

Write the equation for the circle with center at (- 8, - 6) and radius of 10. (x+8)² + (y + 6)² = 10 (x+8)² + (y + 6)² = 100 (x-8)² + (y - 6)² = 100 Find the standard equation for the circle with center on the positive x-axis and passing through ...
March 20, 2012

Converting Polar Equations to Cartesian Equations
If theta= pi/3 , then to convert to a Cartesian equation, let x = A.(1/2)r B.(square root of2/2)r C.(square root of 3/2)r
March 20, 2012

Converting Cartesian Equations to Polar Equations
Convert the Cartesian equation x^2 - y^2 = 16 to a polar equation. r² = 16/cos2è r = -4 r² = 8 help please im stuck between 2 answers.
March 20, 2012

Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.
March 18, 2012

Pre-Cal
A pilot wishes to fly on course 290 with an air speed of 300 knots when the wind blows from 224 at 18 knots. Find the drift angle to the nearest hundredth of a degree. A.3.22° B.5.07° C.86.86° A river is flowing at the rate of 2.4 miles an hour when a boy rows ...
March 17, 2012

Pre-Cal
thanks
March 17, 2012

Pre-Cal
Yes I am, but I don't understand it. I don't have a teacher to teach me. I do my work online, and I just need 2nd semester of pre-cal to graduate.
March 17, 2012

Pre-Cal
Can you tell me how you did it? I got 5 more questions like this one.
March 17, 2012

Pre-Cal
Two airplanes take off from an airport at the same time. One travels on a heading of 45 at 420 mph and the other on a heading of 150 at 400 mph. After two hours, how far apart are the airplanes? A.650.66 miles B.1,160 miles C.1,301 miles
March 17, 2012

Physics
Suppose that when you ride on your 7.90-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 72.5 lb/in2 and the area of contact between each tire and the road is 7.13 cm2, what is your weight?
February 26, 2012

Chemistry
A pure sample of (R)-limonene has a specific rotation of +125.6. If a sample had a specific rotation of +35.6, how much of each enantiomer is present in the sample? Show your work. I don't even know where to begin....please help :(
November 8, 2011

Math College
A 6-sided die is rolled 14 times. What is the probability of seeing a "6" at least 2 times? I am sooo clueless please help!
November 7, 2011

bobpursley
nope the town i live in is small, im actually like the only homeschooled child so nope we don't have any homeschool meetings...my materials get shipped to me from PA..i cant just like drop out from high school though...i have to finish this class...im almost done and about...
October 6, 2011

penn foster world history
@writeacher im in the high school program, to get my diploma, trust me when im done i will not be taking college with this school :)
October 6, 2011

penn foster world history
see ive passed Foragers,farmers,and Builders (exam 007678) & The Axial Ages And Fitful Transitions (exam 007679) but i failed Contacts,conflicts,and The Crucible (exam 007680), Convergence,divergence,and Global Enlightenments (exam 007681), Frustrations Of Progress;chaosand ...
October 6, 2011

Math
10.6 ft
April 28, 2011

CALC
point on the hyperbola 9x^2−6y^2=10 closest to the point (0, 7). y coordinate of each point= ? positive x coordinate= ? negative x coordinate= ?
April 6, 2011

Chemistry
The compound A1B2 (molar mass = 132) has a solubility of 13 g/L. Calculate the Ksp for this compound. I'm stuck on this question, please help?
April 3, 2011

Chem
net ionic equation of aluminum hydroxide + sodium hydroxide
April 2, 2011

Chemistry
Thank you!
March 23, 2011

Chemistry
The half-life of the first order reaction, A to products, is 53.2 s. What was the original concentration, (A)0 in moles per liter, if after 1.8 minutes, the concentration of A is 0.0783 moles per liter? Not sure whether to use integrated rate law or half life law?
March 23, 2011

Chemistry Lab
So we prepared 100mL of .1M solutions of these solutions, and found the pH and H+ contents: pH H+ HCl: .57 .270 HNO3: .58 .260 H2SO4: 1.29 .051 HC2H3O2: 2.44 .0036 H2C2O4: .84 .145 HKC6H4(CO2)2: 4.13 7.41 Now I'm stuck on this question. What conclusions can be drawn from ...
March 21, 2011

Chemistry
Haha, yes Chemistry is just a bunch of fun. And yes, thank you that helps a lot!
March 21, 2011

Chemistry
Oh, thanks! That was so simple! I'm a little confused on how to set up this question? A solution is prepared by mixing 535 mL of 0.30 M NaOCl and 494 mL of 0.26 M HOCl. What is the pH of this solution? [Ka(HOCl) = 3.2 × 10-8] Could you give me a hint?
March 21, 2011

Chemistry
Calculate the pH of a buffer solution that contains 0.23 M benzoic acid (C6H5CO2H) and 0.28 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 10-5 for benzoic acid] Please help?
March 21, 2011

chemistry
Thank you so much!!
March 7, 2011

chemistry
A certain monoprotic weak acid with Ka = 6.7 × 10-8 can be used in various industrial processes, but is no longer used in chemistry teaching labs because it tends to explode when it gets old. (a) What is the [H+] for a 0.558 M aqueous solution of this acid and (b) what ...
March 7, 2011

english (debate)
hey im in the negative side.the topic is no homeworks on weekends and im the 3rd speaker it really sucks so can you guys help me
January 31, 2011

math
my daughter is working on calculating how many triangles point up in equilateral triangle. This is her bonus question: solve this problem for an equilateral triangle with sides measuring n units each. I'm lost, help.
November 17, 2010

math
it think the answer is 2.1
September 16, 2010

WRITING A BOOK REPORT WHAT IS THE IMPORTANT THING I SHOULD WRITE?
September 11, 2010

x^2+4x+3
February 24, 2010

MATHS URGENT
The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me step-by step how to end up ...
October 1, 2009

Maths (URGENT)
The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me step-by step how to end up ...
October 1, 2009

Maths (URGENT)
The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me step by step how I got that...
October 1, 2009

Maths
The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me step by step how I got that...
October 1, 2009

it's 6*1=6
September 1, 2009

algebra math riddle...
How meny cattel are there on the lazy circle double-o bar four square ranch
October 2, 2008

social studies
what is the national democratic convention?
August 28, 2008

Math
Not really understanding solving the formual for the indicated variable. Solve for b2 h/2(b1+b2)
August 28, 2008

Crossword Question
an objected created and? used by humans
November 26, 2007

world history ancient
the knowledge,beliefs,customs,and values of a group of people?
November 26, 2007

social studies