Abi

Most popular questions and responses by Abi
1. MATH?!!?

a store sells ladders. . the retail price was a 40m percent markup over the manufacturer price. .a month later, the store reduced the retail price of the ladder by 25 percent What percent markup is the new retail price over the manufacturer price?

1)Which of the following compounds has the largest lattice energy: LiF LiCl NaF NaCl 2)Which of the following compounds has the most ionic character in its bonding: CaBr2 GeBr4 KBr GaBr3 3)Using the electronegativity table on page 364 of your text, which

3. Calculus (pleas help!)

Find the slope of the tangent line to the ellipse x^2/36 + y^2/49 =1 at the point (x,y). slope =_______ Are there any points where the slope is not defined? (Enter them as comma-separated ordered-pairs, e.g., (1,3), (-2,5). Enter none if there are no such

4. Precal

An indoor physical fitness room consists of a rectangular region with a semicircle on each end. The perimeter of the room is to be a 200-meter running track. a) Draw a figure that visually represents the problem. Let x and y represent the length and width

5. chemistry

Determine the mass of CO2 gas that has a volume of 7.10 L at a pressure of 1.11 atm and a temperature of 31.0°C.

6. Physics

A 5.4 kg bag of groceries is in equilibrium on an incline of angle θ= 150. Find the magnitude of the normal force on the bag

7. maths

karim deposited a sum \$ 9000 in a bank after 2 years he withdrew \$ 4000 and the end of 5 years he received \$ 8300. find the rate of interest on the sum he recieved

8. Calculus

Consider the function f(x)=sin(5x)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= ( I need the values of f(x) for each x) (b) Based on your table of values, what would you expect the limit of

9. math

A model airplane flies 18 feet in 2 seconds. what is the airplane's speed in miles per hour? round your answer to nearest hundredth.

10. Calculus

Consider the function f(x)=(4^x−1)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= I the the falues of f(x) for each interval... (b) Based on your table of values, what would you expect the

11. Math

A couple buys a \$170000 home, making a down payment of 18%. The couple finances the purchase with a 15 year mortgage at an annual rate of 2.75%. Find the monthly payment.

12. Math

Lactose (MW:342 amu) makes up the vast majority of the carbohydrate. Calculate the molarity of lactose in buttermilk and compare it to that of protein.

13. Calculus

Consider the function f(x)=(4^x−1)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= I the the falues of f(x) for each interval... (b) Based on your table of values, what would you expect the

14. MATH

A yellow jacket can fly 4.5 meters in 9 seconds. find the unit rate in meters per second .

15. Precal

An indoor physical fitness room consists of a rectangular region with a semicircle on each end. The perimeter of the room is to be a 200-meter running track. a) Draw a figure that visually represents the problem. Let x and y represent the length and width

16. Calculus

Use the graph to estimate the limit: lim x->0 sin(3x)/x When x is in degrees lim x->0 sin(3x)/x = ________ I thought the the answer was (3*180)/pi but it's not... please help... Thanks

17. calculus

Two cars, one traveling north and one traveling west, collide at an intersection.The resulting momentum of the two cars together after the collision is 32 000 kg . m/s N30degreesW. Find the momentum of each car before the collision.

18. Math

If each 11 football teams In a college athletic conference played each of the other teams just once in a season, how many games would there be? As part of your answer, make a table. How many games would there be for 12 teams?

19. Physics Urgent!!!!!

OK, I know, I'm postin this way too many times but I'm halfway there now.... Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational

20. Math

Using vocabulary terminating non terminating repeating non repeating explain why the value 3.14is rational while the value for pie is irrational

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

23. Physics Urgent!!!!!

Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in

24. Simple Harmonic Motion

have performed an experiment of simple harmonic motion and the values I got Mass(g) Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having

25. maths

4x+3y=21 What is your question? You have simply stated the equation of a straight line. what is a prime factorazation?> expressing a number in terms of its Prime factors eg. 126 = 2*3*3*7 all the factors are prime numbers How does this relate to the first

26. Algebra 1

Solve by whatever method you would prefer. (Leave answers as improper fractions) 3x + 2y = -10 2x – 5y = 3 Can someone give step by step?

27. math

the ratio of the sale price of a jacket to the original price is 3:4 the original price is \$64 what is the sale price

28. physics

A lineaer spring having a force constant k=40 N/m hangs vertically,supporting a 0.8 kg mass.the mass is then pulled down a distance of 0.15 m . During up and down oscillations ,the maximum speed of the mass will be..

29. biochemistry

what is the ph of 1.0 m acetic acid and 1.0 sodium acetate. (ka=1.8x10-5)

30. Linear Programming

A Company wishes to assign six of its workers to six different jobs (one worker to each job and vice versa). The rating of each worker with respect to each job on a scale of 0 to 10 (10 being a high rating) is given by yhe following table: Job 1 Job 2 Job

31. Physics Urgent!!!!!

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

32. Physics Urgent!!!!!

Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in

33. Calculus

Water is leaking out of an inverted conical tank at a rate of 1100.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 15.0 meters and the diameter at the top is 5.0 meters. If the

34. Calculus (pleas help!)

For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..

Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive

36. chemistry

why is it good to be a csi

37. science - refraction

why is refraction important when seomeone uses a camera?

38. Maths

A fighter accelerates from rest at 120,000 m/s^2 for a time of 4 seconds. How far did the jet fighter travel?

39. maths

easiest method for dividing

40. Precal

Please help. I'm having a lot of trouble with solving inequalities and graphing them solve the inequality and graph the solution on the real number line x^2+x-6/x I got SS: -infinity to -3 including -3 union -2 to infinity including -2 is that right?

41. Pre-cal

I'm supposed to graph y= 4+2sin (pi/6 t -pi/5) i have the vertical shift d=4 amplitude 2 level line y=4 crest line y=6 trough line y=2 but i am not sure what the period is formula for period 2pi/b in this case 2pi/pi/6 => 12pi/pi do the pi's cancel,

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

43. Physics Urgent!!

Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in

44. Physics Urgent!!

Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in

45. Calculus

Water is leaking out of an inverted conical tank at a rate of 1100.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 15.0 meters and the diameter at the top is 5.0 meters. If the

46. Calculus (pleas help!)

For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..

47. Math

A photographer changers a sitting fee of \$15for each pose writte a function to describe the situation find a reasonable domain and range for up to 5 pose

48. MATH

A computer's fan rotates 2000 times in 40 seconds. find the unit in rotations per second.

49. org chem

How to know if there's a dipole moment???

50. physics

7/8 part of a substance decays in 45 days what is its half life

51. Physics Urgent!!!!! I really need help with this

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

52. Physics Urgent!!!!! I really need help with this

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

53. algebra

what is the area of length 5 and with 6

Let f(x) = x^3 - x^2 + x - 1. Find an equation for tangent line to f at x = 2.

55. Calculus (pleas help!)

For what values of k is lim x -> INF coshkx/sin2x finite?

56. Physics

Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive

57. Physics

Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive

58. Physics

I have performed an experiment of simple harmonic motion and the values I got Mass(g)Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having

59. Physics

Can someone please tell me how to calculate the standard deviation of the following values? 0.985 0.985 1.005 1.455 1.035 And please for the following numbers too 1.47 1.52 1.50 1.45 1.39

60. social studies

do you have any quizes

61. Maths

(tanÈ+cotÈ)(sinÈ+cosÈ)=secÈ+cosecÈ

1. MATH

5.236

posted on August 23, 2017
2. MATH

???????????????

posted on August 23, 2017
3. math

0.0025

posted on August 23, 2017
4. MATH

80,000

posted on August 23, 2017
5. MATH

i was divide 9 by 4

posted on August 23, 2017
6. MATH

9/4

posted on August 23, 2017
7. MATH

2.25

posted on August 23, 2017
8. MATH

20

posted on August 23, 2017
9. MATH

50

posted on August 23, 2017
10. MATH

damon A computer's fan rotates 2000 times in 40 seconds. find the unit in rotations per second

posted on August 23, 2017
11. MATH

divide

posted on August 23, 2017
12. math

\$784

posted on August 23, 2017
13. Precalculus

This website is boss and you can find the answer quickly. It really explains what you need to know better than I can because I can't show you graphs. mathbitsnotebook (dot com) (slash) Algebra1 (slash) FunctionGraphs (slash) FNGTypeExponential After

posted on November 18, 2016
14. stats

a-1/4 b-2/30 c-3/4

posted on September 1, 2016
15. Chemistry

it might be 1/(8+1) and he/she must be missing () brackets

posted on December 9, 2015
16. physics

posted on October 17, 2015
17. org chem

THANK YOU! if there are many unpaired electrons, will it means its polar?

posted on July 11, 2015
18. Precal

:D thank you!!! I guess I've been staring at this for too long and probably not typing them correctly on the calculator! THANK YOU SO MUCH!!!!!!

posted on June 22, 2013
19. Precal

I'm still not understanding... it's okay i'll keep trying to figure it out. im clearly not double checking it right since i checked for 1 and got a positive answer but its supposed to be negative till 2 :-/ thank you so much for your time! it is honestly

posted on June 22, 2013
20. Precal

but if replace x with -4 i get a positive answer too!

posted on June 22, 2013
21. Precal

if i replace -.001 with x i get 6001.001 how are you solving that without calculator

posted on June 22, 2013
22. Precal

yes, it gives me 6001.001 as an answer You're not using a cal?

posted on June 22, 2013
23. Precal

Aww it's not funny, it's frustating! :( you want me to replace x with -3 not sure what you're meaning by that try -3/-.001 where did you get the .001?? I'm so sorry i'm not understanding and thank you so much for helping

posted on June 22, 2013
24. Precal

See, this is where i have trouble understanding. if i put if in the calculator i see why it'd be -3 to 0 but in the exams the professor makes sure we are not able to graph inequality in calculator my graph was off on paper, i just verified on ti84+ and it

posted on June 22, 2013
25. Precal

I ended up with SS: (-00,-3]union [2,00) why would it be -3 to 0?

posted on June 22, 2013
26. Precal

Isn't it x^2+x-6 = 0 (x+3)(x-2) = 0? x = -3 or x= +2?

posted on June 22, 2013
27. Precal

Sorry i should have put that in parenthesis (x^2+x-6)/x greater than or equal to 0

posted on June 22, 2013
28. Precal

EDIT WHERE INEQUALITY IS GREATER THAN OR EQUAL TO ZERO

posted on June 22, 2013
29. Pre-cal

I did have to find those too but i was stuck on the Period! thank you so very much!

posted on June 21, 2013
30. Physics Urgent!!!!! I really need help with this

I was substracting both radii, now I tryed (6.674E-11)(0.730283)(157.850)/(0.2286)^2 and I got 1.47E-7 and tryed 6.674E-11)(0.730283)(157.850)/(0.2286 +.1524 +.0254)^2 and I got 4.66E-8... but niether is right....

posted on May 2, 2011

I showed it.... r1= 0.0254m, m1=0.730283 kg, r2= 0.152m and m2=157.850 kg... I calculated (6.674E-11)(0.730283)(157.850)/(0.152m-0.0254m)^2 and I got 4.77E-7 and multiplyed it by 2 and then I got 9.54 E-7...

posted on May 2, 2011
32. Physics Urgent!!!!!

But I just have to plug in one number for part A that most be E-7 and for part B I have to plug only one number too that must be E-8.

posted on May 1, 2011
33. Physics Urgent!!

Is that for A?

posted on April 30, 2011
34. Physics Urgent!!

Ok, so I have r1= 0.0254m, m1=0.730283 kg, r2= 0.152m and m2=157.850 kg... I calculated (6.674E-11)(0.730283)(157.850)/(0.152m-0.0254m)^2 and I got 4.77E-7 and multiplyed it by 2 and then I got 9.54 E-7... Does this looks right?

posted on April 30, 2011

Hi Damon, Thanks for your help. Can you explain me how you got alpha (2/3) t^(3/2) ? Because I got alpha (4/3) t^(3/2) = beta (1/2) t^2 and then t= [(8/3)(alpha/beta)]^2 I then used my equation of beta and substituted t with my answer and I got

posted on February 11, 2011
36. Calculus

the values I got for f(x) were 4.9; 4.99; 4.999; 4.9999; 5.0001; 5.001; 5.01; 5.1 The two firsts and the two lasts values are not correct and I don't know why... the limit is 5 also what i have for the other part is -.00001

posted on February 10, 2011
37. Calculus

The first value I tried was 3... and it didn't work either, I thought that the fact that it said "x is in degrees" affected. It also said at the end: (Give your answer accurate to at least 0.01...

posted on February 9, 2011
38. Simple Harmonic Motion

I forgot to mention that the experiment is to teach us error analysis methods... I have to get the values of k for each interval Mass(g) Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 the values for k I got were k (N/m)

posted on February 8, 2011
39. Health Project Ideas

Try your brain on Crystal Meth

posted on February 7, 2011