# Liv

Most popular questions and responses by Liv
1. ## Nature Science

If a typhoon hits an island without any person, is that a disaster?

2. ## Trigonometry

Evaluate arctan(cot10Pi/9) sec(arccos(-1/6) csc(arcsec(5/3) sin(2 arccos(sqrt5/5)

3. ## Math

You want to conduct a survey to find out what sport the students at your school prefer to play. a) You interview 20 boys playing football at lunch. Is this a random sample? explain b) The survey question you ask is, ''What is your favorite sport to play?''

4. ## Math

The formula for finding the perimeter of an equilateral triangle is P = 3s. How can you transform the formula so that it can be used to determine the length of one side of the triangle when given the perimeter?

5. ## math

identify the choice that best completes the statement or answers the question. For questions 1-3, what is the solution of the systems? Use subsitution. 1. y = x + 6 y = 2x

6. ## General chemistry

1) How high above the inner blue cone of the burner flame should the crucible be when the Mg is heated? 2) What should you do if you see white smoke rising from the crucible in the early stages of heating the Mg? 3) How will you know when the reaction

7. ## General chemistry

Ammonia fumes can permanently fog soft contact lenses. Briefly explain why students wearing soft contact lenses should be particularly careful when doing this experiment.

8. ## Organic Chem question

What would be the product when 3-bromoprop-1-ene and cyclohexane-1,3-dione react with excess NaOH?

9. ## chemistry

What is the condensed formula for 6-chloro-2-methyl-3-heptyne?

10. ## physics

a car starts from rest and accelerates uniformly to reach a speed of 21 m/s in 7.0s. What was the speed of the object after 2.0 seconds?

11. ## Pre-calculus

prove the identity sin2x-sin2y/sin2x+sin2y=tan(x-y)/tan(x+y)

12. ## Math

Insert grouping symbols to make the following sentence true: 160 = 8 * 16 + 12 - 4 / 2

13. ## Calculus

Suppose that the price p, in thousand pesos, and the number of sales x(in hundreds) of a certain item can be modeled by the equation 5p+4x+px=100. Suppose also that the price is increasing at the rate of \$200 per year. How fast is the quantity changing at

14. ## Trigonometry

Show that the following are not trigonometric identities 1.tan 2x = 2tan x 2. sec x= sqr rt 1+tan^2 x 3. sin(x+y)=sin x +sin y

15. ## math with application

If 12 % of a radioactive substance decays in 7 hours, what is the half-life of the substance? Carry out all calculations exactly, then round the final answer to three decimal places. The half life is what hours?

16. ## Counseling

Hansen's 6 tasks are all focused on a holistic view of career development.

17. ## General Chemistry

The formula of a compound of lead (Pb) and sulfur (S) was determined using the method in this module. A sample of Pb was weighed into a crucible and covered with finely powdered S. The crucible was covered and heated to allow the Pb and S to react.

18. ## Trigonometry

Evaluate please: a.) arcsin(sin 13pi/16) b.) arccos(cos[-pi/18]) c.) arcsin(sin pi/18 d.) arcsec(-√2) e.) arctan(-√3/3)

19. ## Derivative-Optimization Problems

You plan to enclosed part of a rectangular farmland with a fence. Since one side of it is bounded by a river, you only need to fence the other three sides. if you have enough budget to buy 600m of fencing material, what is the largest area you can enclose?

20. ## physics

A triangular plate with a non-uniform areal density has a mass M=0.700 kg. It is suspended by a pivot at P and can oscillate as indicated below. Its center of mass is a distance d=0.200 m from the pivot axis and its moment of inertia about an axis through

21. ## Calculus Reposted

A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point? dy/dx=-y/x is my change rate so far, should i substitute the coordinates (x,y) to

22. ## Calculus

A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point?

23. ## Pre-calculus

Prove the following identities. 1. 1+cosx/1-cosx = secx + 1/secx -1 2. (tanx + cotx)^2=sec^2x csc^2x 3. cos(x+y) cos(x-y)= cos^2x - sin^2y

24. ## Geometry

A rectangular quilt's length is twice the length of a rectangular picture, and the quilt's width is three times the width of the same picture. The area of the picture is 2 square feet. What is the area of the quilt, in square feet?

25. ## Pre-calculus

prove sin(x+y)+sin(x-y)/cos(x+y)+cos(x-y)=tanx

26. ## Pre-calculus

Evaluate sin 7pi/12. Using sum, difference, and cofunction identities

27. ## Algebra

the phone company has two plans for cell phones. the first plan calls for a monthly fee of 35.00 with unlimited calling. The other plan is a monthly fee of 15.00, with a 0.50 fee for every minute over 100 used in a month. What is the greatest number of

28. ## Physics

A 20mm diameter rivet is used to fastened two 25mm thick plate If the shearing stress of rivet is 80MPa. What tensile force is applied to each plate to shear the rivet

29. ## 2 problems---math

1. find the relationship of x and y in the table. x: 2; 4; 6; 8; 10 y: 1.5; 2; 3; 4.5; 5 y = _______ x + ________ 2. find the relationship of x and y from a graph of a line that crosses the y-axis at y = 6 and that goes into the left 2 units and rises 3

30. ## Pre-calculus

Convert cartesian equation to polar form 1. x^2+y^2=4x 2. (x^2+y^2)^2=6(x^2-y^2)

31. ## Pre-calculus

Evaluate sin16° cos29° + cos16° sin29°

32. ## Stats

Sally rolls a fair number cube 8 times and gets a 5 twice. What is the experimental probability that on her next roll, she will roll a 5? I know that experimental probability is f/n, so the number of trials is now 9, but is the number of times Sally roll a

33. ## Trigonometry

A weight hanging from the end of a spring is pulled 8 inches below its rest position. When released, the weight then exhibits simple harmonic motion, with period 1/2 second. Find an equation describing its motion

34. ## Trigonometry

how do i evaluate this? 1+tan 200(degrees) tan 80(degrees)/tan200(degrees)-tan 80(degrees)

35. ## Science

Direction: Place a big mug, a plastic drinking glass and an empty glass bottle on the table with the big mug at the center, the drinking glass at the edge of the table, and the bottle anywhere on the table. With the force , shake the table and observe what

36. ## Physics

An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?

37. ## Geometry

Point P lies in plane M. How many circles are there in plane M that have center P and a circumference of 6π inches? a) none b) one c) two d) four e) more than four

The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

39. ## Biochem

1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10

40. ## General chemistry

Briefly explain if wearing googles or other eye protection remove the hazard for these students.

41. ## Trigonometry

arctan(cot10Pi/9)

42. ## MATH - HELP PLEASE

The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

43. ## Pre-calculus

Find the acute angle between the lines 2x-3y-6=0 and x+5y-20=0

44. ## calculus

Let g(x)={x^2-x-2 if x is not equal to 1 {0 if x=1

45. ## Pre-calculus

Derive an identity that transforms sin(α+β+γ) into a sum of products of sines and/or cosines of the individual numbers α, β, γ.

46. ## math

6/?=18/?=?/12 (fractions)

47. ## math

What is 5 percent of 40

48. ## math

5,25,50,10 what are the next 3 numbers?

49. ## mat?h

What would the answer be to 4m+(-3n)+n? -3n squared +4m 4m+(-3n)+n = 4m + n(-3 +1) = 4m +(-2n) = 2(2m -n)

50. ## Calculus Antiderivatives

Find a function whose derivative is a constant k

51. ## Math

Kailey's recipe calls for 1 1/2 cups of oil to make one large batch of cookies. How much oil will she need for 1/4 batch?

52. ## Calculus

Can you please help me get the solution to this limit without using squeeze theorem and l'hopitals rule lim x to 0 of x^3 sin(1/x) lim x to 0 of x^2 sin^2(1/x)

53. ## Do newspapers, magazines, television, radio, movie

Im not sure what directing to go for this essay, i have changed it 3 times. can someone tell me if this would be correct? The answer is media doesn't decide what is important, The creators put out there what they think will catch peoples eyes, boring

How many milligrams of sodium azide will produce 8.35 Liters of N2 at STP???

55. ## Biochem

1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10

56. ## math help needed

what is 5 percent of 40

57. ## Integral Calculus

How to determine the order and degree of this differential equation, (y''')^2-2(y')^6=x-2

58. ## Pre-calculus

If sin2x=7/25, siny=-2/sq root of 13, cot y>0, and -pi/4

Solve 5x^-5/x^-4x+3. THANK YOU!

60. ## Pre-calculus

If sin x=-3/5 and sec x>0, find all the other circular function values of x

61. ## Physics

Determine the mass of a pasteboard with area 75.0cm

62. ## Maths

all the integer values of -4 < 2x -6 < 12

63. ## Chemistry

How many grams of KOH will be needed to boil a liter of cold water?

1. ## pre algebra

whats the answers to the whole quiz?

posted on May 6, 2019
2. ## Algebra 1

1/(x-5)(x+7) =1/(x^2+2x-35)

posted on March 27, 2019
3. ## Health

thanks that girl!

posted on March 8, 2019
4. ## Math

Convert 566.2% into a decimal

posted on March 6, 2019
5. ## Language Arts Ms. Sue?? Writeacher?? Reed?

what are the answers to the whole quiz, i'm new by the way.?

posted on February 28, 2019
6. ## Math

181 and 327

posted on February 14, 2019
7. ## History

posted on February 11, 2019
8. ## Science

That's not now stop!

posted on February 11, 2019
9. ## Science asap

A C C A C 100%

posted on October 23, 2018
10. ## Art

The ms. Sue on here is not the right Ms. Sue

posted on May 16, 2018
11. ## 2 problems---math

alright, thank you!

posted on April 12, 2018
12. ## 2 problems---math

sorry, for question 1 its x: 0; 1; 3; 6; 7

posted on April 12, 2018
13. ## General chemistry

Ammonia?

posted on February 12, 2018
14. ## Calculus- Related rates

Is dA=4/3?

posted on March 1, 2017
15. ## Calculus- Related rates

So dr/dt is equals to 1/9pi? or i have miscalculated again?

posted on March 1, 2017
16. ## calculus

Srry the question is incomplete... please help with these questions a. Is g(x) continuous at x=1 b. What type of discontinuity does it have

posted on January 29, 2017
17. ## Math

25

posted on January 18, 2017
18. ## algebra

.75(8x-24)-4x=-182 -492-18+328=-182 -510+328=-182 -182=-182 if x=-82

posted on October 1, 2016
19. ## algebra

solve for x 0.75(8x-24)-4x=-182 6x-18-4x=-182 2x=-182+18 2x=-164 x=-82

posted on October 1, 2016
20. ## The Giver

It's D because I am in connection acedmey

posted on May 27, 2016
21. ## Math

3P = s Ps = 3

posted on March 15, 2016

A car is traveling at a rate of 54 miles per hour. What is the car's rate in feet per second? How many feet will the car travel in 20 seconds? In your computations, use the fact that 1 mile is equal to 5280 feet.

posted on March 13, 2016
23. ## factorization

How did you get 891? I'm confused on that... PLZ explain!

posted on January 12, 2016
24. ## Math

aflyercracker

posted on November 17, 2015

What gets hot and cold faster, solid or gas and why?

posted on April 6, 2015
26. ## Stats

But, we know that the 5 came up two times in the first eight rolls.

posted on August 23, 2014
27. ## Science

The cup becomes positively charged and I know this 100% the right answer.

posted on March 10, 2013
28. ## math

first do what is in perenthises then do exponints then multiply then divide then add then subtract. you can remember this by doing p e m d a s pemdas!!!!!!!!!!

posted on May 17, 2012
29. ## Jobs(9th)

you should reasearch some real interior designers and look up all of your questions

posted on April 2, 2012
30. ## Science

the answer is letter c think of food food is chemical energy

posted on April 2, 2012
31. ## math

i know but thanks anyway

posted on April 2, 2012
32. ## geometry

40 multiplyed by 12 equalls area

posted on April 2, 2012
33. ## math help needed

thanks CON

posted on April 2, 2012
34. ## Geometry

plus wouldnt the answer be 36 because there both square and there distance isnt far

posted on April 2, 2012
35. ## Geometry

whats a ratino and then ill help because i have no idea what that means

posted on April 2, 2012
36. ## math

what

posted on April 2, 2012
37. ## math

you dot need a calculator unless you memorized the area and you don't need tape unless its used to hold down string

posted on April 2, 2012