Adrianna
Most popular questions and responses by Adrianna
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 
PreCal
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 
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 
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 
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 
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 
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 
PreCal
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 
Math
A 3pound 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 
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 
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 × 105 for benzoic acid] Please help?
asked on March 21, 2011 
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 
english
Locate the participial phrase and the word modified. Approaching the curve, the car slowed down.
asked on November 13, 2017 
Chem
net ionic equation of aluminum hydroxide + sodium hydroxide
asked on April 2, 2011 
Physics
Suppose that when you ride on your 7.90kg 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 
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 
Math
Use an example to describe the multiplicative relationship between two equivalent ratios
asked on October 26, 2016 
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 
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 
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 (x8)² + (y  6)² = 100 Find the standard equation for the circle with center on the positive xaxis and passing through the
asked on March 20, 2012 
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 
Chemistry
If 42 mL of Cr2O72(aq) solution is titrated to the endpoint with 172 mL of 0.15 M Cl, what was the concentation of Cr2O72 solution? I got the reaction 14 H+(aq) _ Cr2O72(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 
Math College
A 6sided 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 
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 
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 
english
If you are very good with people, you have a high level of __________ intelligence.
asked on March 28, 2017 
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 
business
Growth potential and opportunity for a small cleaning service business
asked on February 20, 2014 
Arrays and an expanded algorithm
use the grid to draw a rectangle. Then complete the calculation. 30 x19
asked on November 7, 2012 
PreCal
Find the distance from point (1, 3) to the line 5x 4y= 10.
asked on March 21, 2012 
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 
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(xp)(xq)(xr) 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 
Math
Not really understanding solving the formual for the indicated variable. Solve for b2 h/2(b1+b2)
asked on August 28, 2008 
Math
I need assistance with statistics and probability. Can you some how assist me with that.?
asked on January 3, 2014 
College Algebra
3x^4=648x someone help please im so confused. i am trying to find the solution set?
asked on February 1, 2013 
Chemistry
The halflife 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 
chemistry
A certain monoprotic weak acid with Ka = 6.7 × 108 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 
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 
4th grade
WRITING A BOOK REPORT WHAT IS THE IMPORTANT THING I SHOULD WRITE?
asked on September 11, 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(xp)(xq)(xr) 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 
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(xp)(xq)(xr) 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 
social studies
what is the national democratic convention?
asked on August 28, 2008 
social studies
What sailor provedthat Columbus did not reach Asia?
asked on April 1, 2007

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 
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 
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 
LANGUAGE ARTS HELLPPPP!!!!!
LizLiz is 100% correct
posted on March 21, 2017 
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 
math
1. D 2. A 3. B 4. A 5. C
posted on December 6, 2016 
Science
The answers are A D D B I took the test and got 100%
posted on December 6, 2016 
math
8267 2761
posted on October 7, 2015 
math
it think the answer is 2.1
posted on May 5, 2015 
algebra math riddle...
How meny cattel are there on the lazy circle doubleo bar four square ranch
posted on January 8, 2015 
Algebra
Slope = 1.5
posted on March 21, 2012 
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 
Converting Cartesian Equations to Polar Equations
Thank you.
posted on March 20, 2012 
PreCal
thanks
posted on March 17, 2012 
PreCal
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 precal to graduate.
posted on March 17, 2012 
PreCal
Can you tell me how you did it? I got 5 more questions like this one.
posted on March 17, 2012 
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 
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 
Crossword Question
an objected created and? used by humans
posted on September 21, 2011 
Crossword Question
the knowledge,beliefs,customs,and values of a group of people?
posted on September 21, 2011 
Math
10.6 ft
posted on May 2, 2011 
Chemistry
Thank you!
posted on March 23, 2011 
Chemistry
Haha, yes Chemistry is just a bunch of fun. And yes, thank you that helps a lot!
posted on 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 × 108] Could you give me a hint?
posted on March 21, 2011 
chemistry
Thank you so much!!
posted on March 7, 2011 
11th grade
x^2+4x+3
posted on March 4, 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(xp)(xq)(xr) 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 
9th grade
it's 6*1=6
posted on September 29, 2009 
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