Jk

Most popular questions and responses by Jk
1. precalculus

find an hyperbola equation with foci (0, +/-8) and asymptotes; y=+/-1/2x?

2. chemistry help

A 15.00 mL sample of an unknown monoprotic weak acid solution is titrated with 0.35 M NaOH. The initial buret reading is 0.23 mL. The phenolphthalein indicator turns the solution light pink when the buret reads 29.58 mL. B. How many moles of NaOH were

3. English

1. A place that has experienced a cataclysm has a. diminished in size b. grown green and lush c. suffered violent change *** d. begun to give off rays of light 2. In which of the following sentences is the word conceivable used correctly? a. Your goal of

4. Math

What is the best estimate for the sum of 3/8 and 1/12?

5. chemistry

A 15.00 mL sample of an unknown monoprotic weak acid solution is titrated with 0.35 M NaOH. The initial buret reading is 0.23 mL. The phenolphthalein indicator turns the solution light pink when the buret reads 29.58 mL. A. what volume of 0.35 M NaOH was

6. English

Vinegar (by Roger McGough) sometimes i feel like a priest in a fish and chips queue quietly thinking as the vinegar runs through how nice it would be to buy supper for two (1967) Poem for Roger McGough (by Adrian Henri) A nun in a supermarket standing in

7. math

Sam bought a new car for \$26,500. The car depreciates approximately 13% of its value each year. A) What is the decay factor for the value of this car? b)  Write an equation to model the decay value of this car? c)  What will the value of the car be in 10

8. chemistry

a 3.54 grams solid sample of an unknown monoprotic acid was dissolved in distilled water to produce a 47.0 mL solution at 25 degrees. This solution was then titrated with 0.2 M NaOH. The equivalence point was reached when 35.72 mL of 0.2 M NaOH was

9. Math

What is the value of the digit 9 in the number 597,184?

10. math

A ferris wheel is 35 meters in diameter,and can be boarded at ground level. The wheel turns in a counterclokcwise direction, completing one full revolution every 5 minutes. Suppose that a t=0 you are in the three o'clock position. Write a formula, using

11. Math

What is the quotient of 396 divided evenly by 12?

12. chemistry help

a 3.54 grams solid sample of an unknown monoprotic acid was dissolved in distilled water to produce a 47.0 mL solution at 25 degrees. This solution was then titrated with 0.2 M NaOH. The equivalence point was reached when 35.72 mL of 0.2 M NaOH was

13. English

What words are articles?

14. Math

What is the value of the following expression?

15. COLLEGE CHEMISTRY HARD

calculate the ph at the equivalence point for the titration of 0.01 M Ch3COOH with 0.1 M NaoH ka= Ch3Cooh 1.8E-5 idek how to do it?

16. english

Vinegar (by Roger McGough) Poem for Roger McGough (by Adrian Henri) sometimes A nun in a supermarket i feel like a priest standing in the queue in a fish and chips queue Wondering what it’s like quietly thinking To buy groceries for two. as the vinegar

17. Math

What is the value of the expression? 30 - (5 x 4) + 2

18. chemistry

calculate the ph at the equivalence point for the titration of 0.01 M Ch3COOH with 0.1 M NaoH ka= Ch3Cooh 1.8E-5 idek how to do it?

19. Science

How does earths rotation cause day and night?

20. chemistry

In the following questions, assume that no excess distilled water was added from a wash bottle during the titration of 10.00 mL of vinegar with your standardized solution of NaOH. A. calculate the pH of vinegar. B. what was the pH of the solution after

21. chemistry

Where is an electron in 3Py orbital most likely to be found and where does the probability it vanish?

22. Math

Three angles of a quadrilateral are in the ratio 1:2:3. The sum of the least and the greatest of these angles is 200°. Find all the four angles of the quadrilateral.

23. math

sinx+ siny/ (cosx+cosy)= tan 1/2 (x+y) prove this identity

24. chemistry

calculate the pH after 0.02 mol NaOH is added to 1.00 L of .1 M sodium propanoate NaC3H5O2

25. chemistry

calculate the ph at the equivalence point for the titration of .1 M NH3 and .1 M HCl. kb NH3= 1.8E-5 how you do it?

26. chemistry help

In the following questions, assume that no excess distilled water was added from a wash bottle during the titration of 10.00 mL of vinegar with your standardized solution of NaOH. A. calculate the pH of vinegar. B. what was the pH of the solution after

27. precalculus

find the eccentricity to identify the conic, then sketch the conic and its directrix r=1/1-cos theta r=2/3+2 sin theta r=4/1-2 cos theta

28. precalculus

find the eccentricity to identify the conic, then sketch the conic and its directrix r=1/1-cos theta r=2/3+2 sin theta r=4/1-2 cos theta

29. math - exponent laws

evaluate -(11/17^-10/(9/5)^(1/10) answer from Reiny: (-11/-17)^-10 = 1/(11/17)^10 = 77.725... (I stored that in A on my calculator) (9/5)^(1/10) = 1.0605.. so -(11/17^-10/(9/5)^(1/10) = -77.725... /1.0605... = -73.28837824 --- do we need to reciprocal

30. precalculus help

Let z1=2(cos 2pi/3+isin 2pi/3) what are z1^(1/3)? do not even know how to apply demoivre theorem?

31. SUPER HARD CHEMISTRY

a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point

32. HARD COLLEGE CHEMISTRY

a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?

33. Chemistry

How many moles of oxygen atoms are contained in 1.86 x 10-2 mol CuSO4·5H2O

34. chemistry

what products would form after hydrogenation of 2-methyl-1-butene? after halogenation (cl2)?

35. enlgish

Last night, lucy and Neil met Morey in Gramercy Park. 1. The object of the verb is.? 2. the predicate of the sentence is?

36. chemistry

what products would form after hydrogenation of 2-methyl-1-butene? after halogenation (cl2)?

37. precalculus

use the discriminant to determine whether the equation is a parabola, an ellipse, or a hyperbola. Then identify the angle of rotation required to eliminate the xy-term. x^2+4xy+y^2=1 5x^2-6xy+5y^2-8x+8y-8=0 9x^2+24xy+16y^2=25

38. Physics (mechanics)

A u-control airplane of mass m is attached by control wires of length L and negligible mass to the "pilot" who controls the lift provided by the wing FL. The wires control the plane's elevator or angle of attack. The plane's engine keeps it moving at

39. math

Each student in a class contributed as many paise as number of student in the class.teacher contributed rs 13 to make total collection of rs 49.how many students were in the class?

40. pre-calculus

eliminate parameters of x=1+cos t y=1-sin t graph the parametric equations

41. Understanding percent

In the square, if part A is 1/4 of the square and part C is 1/10 of the square, what percent of the square is part B?

42. math

It takes 3/8 cup of powdered drink mix to make 1 quart of a flavored drink. The table shows the number of cups of powdered drink mix that Juanita has of each flavor. How many quarts of flavored drink can Juanita make for each flavor?

43. precalculus

how do you eliminate the parameters for x=1-t^2 and y=1+t?

44. precalculus

algebraically identify the symmetries of r=2sin(2theta)

45. precalculus

Let z1=2(cos 2pi/3+isin 2pi/3) what are z1^(1/3)?

46. chemistry

PH of gatorade and body sweat

47. college chemistry HARD

a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?

48. chemistry

a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?

49. easy math

√(100 - 20√5 + 5 + 15 - 6√15 + 9) solve.

50. precalculus

Let u= and v= A. what is the angle between u and v? B. find projvU C. reoslve u into u1 parallel to v abd U2 perpendicular to v.

51. Math

angles ABC and XYZ are complementary angles. if m < ABC is 18 more than three times m < XYZ, find < XYZ i have no idea how to do this i know that something has to equal 18+ 3m but i don't understand the (

52. english

I consider that cosmetic surgery is a personal option but in some cases it becomes a bad addiction because expand this please

53. AP chemistry

what products would form after hydrogenation of 2-methyl-1-butene? after halogenation (cl2)?

54. precalculus

find a hyperbola equation with vertices (o,+-4) and passes through the point (3,-5)

55. precalculus

Let u have a length of 20 and direction of 60 degrees, and v= 5i-3j what is u? what is abs(2v-u)?

56. precalculus

Let z1=2(cos 2pi/3+isin 2pi/3) what are z1^(1/3)?

57. precalculus

Let u= and v= A. what is the angle between u and v? B. find projvU C. reoslve u into u1 parallel to v abd U2 perpendicular to v.

58. precalculus

Let u have a length of 20 and direction of 60 degrees, and v= 5i-3j what is u? what is abs(2v-u)?

59. physics

exercise 4.1 suppose the pilot start agin from rest

60. geometry

there are 4 cirlces in an equilateral triangle with sides equal to 16cm. what is the radius of the big circle and the little circles

61. math

2 Years before,average age of 8 numbers of family was 20yr.if present average of family even on inclusion of 1 child,remains same.present age of child is?

62. math

Distance between 2 villages A and B is 165km.a scooter rider starts from A to B at 75km at speed of 320km/hr.at the same time another scooter rider starts from B towards A at speed of 25km/hr.find when they will cross each other? ( 10 am)?

63. Maths

Find x such that the point (x,4) is 10 units from (-2,-2)

64. Algebra

For the function f(x) = 5/x+4 find the average rate of change of f from 1 to x:

65. MATH - exponent laws

how do you evaluated this? (-)sign ↓ _ __________( -11/-17)^-10 line is divide (9/5)^1/10

jk

67. Algebra 1

Nico drives from school to the store at 25 miles per hour. He drives back to the school (along the same route) at 35 miles per hour, and the returns to the store (via the same route) travelling at 40 miles per hour. Find the average rate for the three

68. French

Is "je suis allé souvent" correct or should it be "je suis souvent allé?" Thanks

1. social studies

k

posted on May 28, 2019
2. Health

Thank you 😘 all my jiskha helpers/fans!! BIG SHOUTOUT!! Too you all, love you guys 😍😚🙂!!!

posted on April 4, 2019
3. Math

33

posted on March 27, 2019
4. Math

12

posted on March 27, 2019
5. Math

1/2

posted on March 27, 2019
6. English

The, a, an

posted on March 27, 2019
7. Math

posted on March 27, 2019
8. Math

posted on March 26, 2019
9. Math

90,000 is the correct answer. It is the best answer ever because it is the rightest.

posted on March 26, 2019
10. Math

90,000

posted on March 26, 2019
11. Math

1x3=3 3x4=12 2x3=6 6x4=24

posted on March 26, 2019
12. math

280 miles Multiply by 40

posted on March 26, 2019
13. geometry

1.cube that has 2x2x2cm 2.sphere that has a diameter of 2cm 3.cylinder that has a height of 2cm and diameter of 2cm Simply find the volume and surface area of each one.

posted on February 22, 2019
14. educational technology

lol yes A B D is correct for all you Connexus users....lol dont listen to the rest of these aholes

posted on October 30, 2018
15. English

posted on October 30, 2018
16. I need help!

someone helping u is 100%correct use his or her way

posted on April 9, 2018
17. art

thnxs

posted on March 30, 2018
18. identity theft

yup 100% b a a

posted on March 29, 2018
19. english 11

no

posted on October 24, 2017
20. geometry

T

posted on October 9, 2017
21. Chemistry

799

posted on September 6, 2017
22. Probability

27

posted on February 12, 2017
23. Calculus

oi

posted on February 6, 2017

5

posted on January 14, 2017
25. science

21

posted on November 28, 2016
26. Finance

102,857

posted on November 2, 2016
27. Math

998

posted on November 1, 2016
28. math

50

posted on August 16, 2016
29. math

1.4 because u have to divide 5 divide 7.

posted on February 18, 2016
30. Science

Thanks Kiki!!!!

posted on January 20, 2016
31. Physics Help

velocity

posted on December 31, 2015