Adrianna

Most popular questions and responses by Adrianna
  1. inverse trig HELP PLEASE!!

    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.

    asked on March 18, 2012
  2. 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

    asked on March 17, 2012
  3. 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

    asked on March 11, 2016
  4. 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 .

    asked on August 28, 2013
  5. 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

    asked on March 11, 2016
  6. 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

    asked on March 20, 2012
  7. 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.

    asked on March 20, 2012
  8. 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

    asked on March 17, 2012
  9. 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?

    asked on September 22, 2015
  10. 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?

    asked on September 21, 2015
  11. 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?

    asked on March 21, 2011
  12. 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 :(

    asked on November 8, 2011
  13. english

    Locate the participial phrase and the word modified. Approaching the curve, the car slowed down.

    asked on November 13, 2017
  14. Chem

    net ionic equation of aluminum hydroxide + sodium hydroxide

    asked on April 2, 2011
  15. 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?

    asked on February 26, 2012
  16. 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

    asked on March 21, 2011
  17. Math

    Use an example to describe the multiplicative relationship between two equivalent ratios

    asked on October 26, 2016
  18. 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

    asked on March 21, 2012
  19. 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

    asked on September 4, 2014
  20. NEED MAJOR HELP! *QUADRATIC EQUATIONS*

    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 the

    asked on March 20, 2012
  21. 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

    asked on October 6, 2011
  22. Chemistry

    If 42 mL of Cr2O7-2(aq) solution is titrated to the endpoint with 172 mL of 0.15 M Cl-, what was the concentation of Cr2O7-2 solution? I got the reaction 14 H+(aq) _ Cr2O7-2(aq) + 6 Cl- = 2 Cr+3(aq) + 3 Cl2(g) + 7 H20(l) Now I have drawn a blank. Please

    asked on April 12, 2017
  23. 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!

    asked on November 7, 2011
  24. 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= ?

    asked on April 6, 2011
  25. 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?

    asked on April 3, 2011
  26. english

    If you are very good with people, you have a high level of __________ intelligence.

    asked on March 28, 2017
  27. 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?

    asked on June 3, 2014
  28. business

    Growth potential and opportunity for a small cleaning service business

    asked on February 20, 2014
  29. Arrays and an expanded algorithm

    use the grid to draw a rectangle. Then complete the calculation. 30 x19

    asked on November 7, 2012
  30. Pre-Cal

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

    asked on March 21, 2012
  31. 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.

    asked on November 17, 2010
  32. 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

    asked on October 1, 2009
  33. Math

    Not really understanding solving the formual for the indicated variable. Solve for b2 h/2(b1+b2)

    asked on August 28, 2008
  34. Math

    I need assistance with statistics and probability. Can you some how assist me with that.?

    asked on January 3, 2014
  35. College Algebra

    3x^4=648x someone help please im so confused. i am trying to find the solution set?

    asked on February 1, 2013
  36. 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

    asked on March 23, 2011
  37. 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

    asked on March 7, 2011
  38. 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

    asked on January 31, 2011
  39. 4th grade

    WRITING A BOOK REPORT WHAT IS THE IMPORTANT THING I SHOULD WRITE?

    asked on September 11, 2010
  40. 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

    asked on October 1, 2009
  41. 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

    asked on October 1, 2009
  42. social studies

    what is the national democratic convention?

    asked on August 28, 2008
  43. social studies

    What sailor provedthat Columbus did not reach Asia?

    asked on April 1, 2007
  1. math

    8 cups because 2/3 times x/12 you do cross multiplication you get 24 so to get rid of x you divide. So 24 goes into the house and 3 outside and you will get 8

    posted on March 11, 2019
  2. Math

    You complete 3 centimeters of a necklace in an hour. Each hour after the first,you triple the length of the necklace. Write an expression using exponents for the length of the necklace after 3 hours.then the length.

    posted on September 20, 2017
  3. Algebra

    n still​ water, a boat averages 9 miles per hour. It takes the same amount of time to travel 26 miles​ downstream, with the​ current, as 10 miles​ upstream, against the current. What is the rate of the​ water's current?

    posted on June 16, 2017
  4. LANGUAGE ARTS HELLPPPP!!!!!

    LizLiz is 100% correct

    posted on March 21, 2017
  5. LA HELP/CHECK!

    I took the test and theses answers are 100% correct 1 A 2 B 3 C 4 D 5 D 6 C 7 B 8 C Hope this helped :)

    posted on March 20, 2017
  6. math

    1. D 2. A 3. B 4. A 5. C

    posted on December 6, 2016
  7. Science

    The answers are A D D B I took the test and got 100%

    posted on December 6, 2016
  8. math

    8267- 2761

    posted on October 7, 2015
  9. math

    it think the answer is 2.1

    posted on May 5, 2015
  10. algebra math riddle...

    How meny cattel are there on the lazy circle double-o bar four square ranch

    posted on January 8, 2015
  11. Algebra

    Slope = -1.5

    posted on March 21, 2012
  12. NEED MAJOR HELP! *QUADRATIC EQUATIONS*

    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.

    posted on March 20, 2012
  13. Converting Cartesian Equations to Polar Equations

    Thank you.

    posted on March 20, 2012
  14. Pre-Cal

    thanks

    posted on March 17, 2012
  15. 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.

    posted on March 17, 2012
  16. Pre-Cal

    Can you tell me how you did it? I got 5 more questions like this one.

    posted on March 17, 2012
  17. penn foster world history

    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

    posted on October 7, 2011
  18. 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 :)

    posted on October 6, 2011
  19. Crossword Question

    an objected created and? used by humans

    posted on September 21, 2011
  20. Crossword Question

    the knowledge,beliefs,customs,and values of a group of people?

    posted on September 21, 2011
  21. Math

    10.6 ft

    posted on May 2, 2011
  22. Chemistry

    Thank you!

    posted on March 23, 2011
  23. Chemistry

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

    posted on March 21, 2011
  24. 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?

    posted on March 21, 2011
  25. chemistry

    Thank you so much!!

    posted on March 7, 2011
  26. 11th grade

    x^2+4x+3

    posted on March 4, 2010
  27. 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

    posted on October 1, 2009
  28. 9th grade

    it's 6*1=6

    posted on September 29, 2009
  29. math (unit rate)

    I have no ideahow to do any of this I just failed a test on it,do u multiply,divide,add,subtract,I have noIDEA!

    posted on May 7, 2009